Optical module

Abstract

The optical module comprises an optical transceiving assembly and an optical fiber adapter, the optical transceiving assembly comprises a first tube shell, a light splitting assembly arranged in the first tube shell, an optical transmitting assembly connected with the first tube shell, a support inserted into the first tube shell and an optical receiving assembly, and the first tube shell comprises an inner cavity. An optical element and an inclined plane located below the optical element are arranged in the inner cavity, and the inclined plane is configured to reflect light reflected by the transmission plane of the optical element again; the light splitting assembly comprises a support frame and a plurality of light splitters arranged on the support frame, a collimating lens is arranged in the support frame, a converging lens at the end part of the optical fiber adapter is inserted into the support frame, and the light splitters are configured to split light with different wavelengths transmitted by the optical fiber adapter; the support comprises an installation groove provided with an inclined installation face, the installation face is communicated with the first tube shell, and the light receiving assembly is arranged on the installation face.

Description

optical modules

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to patents filed with the China Patent Office on June 13, 2022, with application number 202210665581.5, filed with the China Patent Office on June 13, 2022, with application number 202210667216.8, filed with the China Patent Office on June 13, 2022, with application number 202221475327.0, filed with the China Patent Office on June 13, 2022, with application number 202221475039.5, and filed with the China Patent Office on June 13, 2022, with application number 202221481014.6, the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the field of optical communication technology, and in particular to an optical module. Background Art

[0004] With the development of new services and applications such as cloud computing, mobile internet, and video, the advancement of optical communication technology has become increasingly important. In optical communication technology, optical modules are tools for converting optical and electrical signals, making them key components in optical communication equipment. Furthermore, the transmission rates of optical modules are constantly increasing as optical communication technology evolves. The core component of high-speed transceiver modules is the BOSA (Bi-Directional Optical Sub-Assembly) structure within the optical module.

[0005] Summary of the Invention

[0006] In a first aspect, some embodiments of the present disclosure provide an optical module, comprising: a circuit board; an optical transceiver assembly electrically connected to the circuit board; an optical fiber adapter connected to the optical transceiver assembly; wherein the optical transceiver assembly comprises: a first tube shell, comprising an inner cavity and an incident light port, an output light port, and an integrated transceiver light port connected to the inner cavity, the optical fiber adapter being inserted into the inner cavity through the integrated transceiver light port; an optical element and an inclined surface are provided in the inner cavity, the optical element being configured to transmit and / or reflect the emitted light incident on the first tube shell; the inclined surface is located below the optical element, the inclined surface is arranged opposite to the transmission surface on the optical element, and is configured to reflect the emitted light reflected by the transmission surface again so that the reflected emitted light does not pass through the incident light port; a spectrometer assembly is arranged in the inner cavity, comprising a support frame and a first spectrometer, a second spectrometer, and a third spectrometer arranged on the support frame , a collimating lens is provided in the support frame, and the converging lens at the end of the optical fiber adapter is inserted into the support frame; the first splitter, the second splitter and the third splitter are configured to reflect and split the received light of different wavelengths transmitted by the optical fiber adapter; the optical emitting component is connected to the first tube shell through the incident light port, and is configured to generate emitted light, and the emitted light is coupled to the optical fiber adapter in sequence through the optical element, the collimating lens, the first splitter and the converging lens; the bracket is inserted into the output light port, and includes a mounting groove, one end of the mounting groove is provided with an opening, and the other end of the mounting groove is provided with an inclined mounting surface, and the mounting surface is connected to the output light port; along the light emission direction in the first tube shell, the distance between the mounting surface and the central axis of the first tube shell gradually decreases; the optical receiving component is provided on the mounting surface, and is configured to receive the received light reflected by the splitting component.

[0007] In a second aspect, some embodiments of the present disclosure provide an optical module, comprising: a circuit board; an optical transceiver assembly electrically connected to the circuit board; an optical fiber adapter connected to the optical transceiver assembly; wherein the optical transceiver assembly comprises: a second tube shell, comprising an inner cavity and a light inlet, a light outlet, and a light-receiving light outlet communicated with the inner cavity, the optical fiber adapter being inserted into the inner cavity through the light-receiving light outlet; an optical element and an inclined surface are provided in the inner cavity, the optical element being configured to transmit and / or reflect the emitted light incident on the second tube shell; the inclined surface is located below the optical element, the inclined surface is arranged opposite to the transmission surface on the optical element, and is configured to reflect the light reflected by the transmission surface again so that the reflected emitted light does not pass through the light inlet; a protruding fixing platform is provided on it, and a fixing platform is provided inside the fixing platform A mounting groove is provided, one end of the mounting groove is provided with an opening, and the other end of the mounting groove is provided with an inclined mounting platform, and the mounting platform is connected to the light outlet; along the light emission direction in the second tube shell, the distance between the mounting platform and the central axis of the second tube shell gradually decreases; multiple optical splitters are arranged in the inner cavity, corresponding to the light receiving and light outlet and the light outlet, and are configured to reflect and split the received light of different wavelengths transmitted by the optical fiber adapter; the light emitting component is connected to the second tube shell through the light inlet, and is configured to generate emitted light, and the emitted light is coupled to the optical fiber adapter in sequence through the optical element and the optical splitter; the light receiving component is provided on the mounting platform, has a preset angle with the second tube shell, and is configured to receive the received light reflected by the optical splitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and are not intended to limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, and the like involved in the embodiments of the present disclosure.

[0009] FIG1 is a connection diagram of an optical communication system according to some embodiments;

[0010] FIG2 is a block diagram of an optical network terminal according to some embodiments;

[0011] FIG3 is a structural diagram of an optical module according to some embodiments;

[0012] FIG4 is an exploded view of an optical module according to some embodiments;

[0013] FIG5 is a schematic structural diagram of an optical transceiver assembly in an optical module according to some embodiments;

[0014] FIG6 is an exploded schematic diagram of an optical transceiver assembly in an optical module according to some embodiments;

[0015] FIG7 is a schematic structural diagram of a tube shell in an optical module according to some embodiments;

[0016] FIG8 is a schematic structural diagram of a tube housing in an optical module from another angle according to some embodiments;

[0017] FIG9 is a schematic diagram of a structure of a tube housing in an optical module at a third angle α according to some embodiments;

[0018] FIG10 is a cross-sectional view of a housing in an optical module according to some embodiments;

[0019] FIG11 is a schematic structural diagram of a support frame in an optical module according to some embodiments;

[0020] FIG12 is a schematic diagram showing the structure of a support frame in an optical module at another angle according to some embodiments;

[0021] FIG13 is a cross-sectional view of a support frame in an optical module according to some embodiments;

[0022] FIG14 is a cross-sectional view of an assembly of a light splitting component and a fiber optic adapter in an optical module according to some embodiments;

[0023] FIG15 is a schematic diagram of a receiving optical path of an optical module according to some embodiments;

[0024] FIG16 is a schematic structural diagram of a bracket in an optical module according to some embodiments;

[0025] FIG17 is a schematic diagram showing another angle structure of a bracket in an optical module according to some embodiments;

[0026] FIG18 is a cross-sectional view of an optical transceiver device in an optical module according to some embodiments;

[0027] FIG19 is a schematic structural diagram of another optical transceiver device in an optical module according to some embodiments;

[0028] FIG20 is an exploded schematic diagram of another optical transceiver device in an optical module according to some embodiments;

[0029] FIG21 is a schematic structural diagram of another tube housing in an optical module according to some embodiments;

[0030] FIG22 is a schematic diagram showing the structure of another type of housing in an optical module from another angle according to some embodiments;

[0031] FIG23 is a cross-sectional view of another housing in an optical module according to some embodiments;

[0032] FIG24 is a cross-sectional view from another angle of another type of housing in an optical module according to some embodiments;

[0033] FIG25 is a cross-sectional view of another optical transceiver device in an optical module according to some embodiments;

[0034] FIG26 is a schematic structural diagram of a light receiving component in an optical module according to some embodiments. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0036] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms such as the third person singular form "comprises" and the present participle form "comprising" are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0037] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0038] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term "coupled" may be used to indicate that two or more components are in direct physical or electrical contact. However, the term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0039] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C,” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0040] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0041] The use of "configured to" herein is intended to be open and inclusive language that does not exclude devices being configured to perform additional tasks or steps.

[0042] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0043] In optical communication technology, light is used to carry the information to be transmitted. This information is then transmitted through optical fiber or waveguide information transmission equipment to information processing equipment such as computers. Because optical signals have passive transmission characteristics when transmitted through optical fiber or waveguide, low-cost, low-loss information transmission is possible. Furthermore, the signals transmitted by optical fiber or waveguide information transmission equipment are optical signals, while the signals that can be recognized and processed by computers and other information processing equipment are electrical signals. Therefore, in order to establish an information connection between optical fiber or waveguide information transmission equipment and computers and other information processing equipment, it is necessary to convert electrical signals into optical signals.

[0044] In the field of fiber-optic communications, optical modules implement the aforementioned conversion between optical and electrical signals. They include an optical port and an electrical port. The optical module uses the optical port to achieve optical communication with information transmission equipment such as optical fibers or optical waveguides, while the electrical port enables electrical connection to an optical network terminal (e.g., an optical modem). The electrical connection is primarily configured to provide power, I2C signal transmission, data signal transmission, and grounding. The optical network terminal transmits the electrical signals to information processing equipment such as computers via network cables or wireless fidelity (Wi-Fi).

[0045] Figure 1 is a connection diagram of an optical communication system according to some embodiments. As shown in Figure 1, the optical communication system mainly includes a remote server 1000, a local information processing device 2000, an optical network terminal 100, an optical module 200, an optical fiber 101, and a network cable 103;

[0046] One end of optical fiber 101 is connected to remote server 1000, and the other end is connected to optical network terminal 100 via optical module 200. Optical fiber itself can support long-distance signal transmission, for example, signal transmission over several kilometers (6 to 8 kilometers). Furthermore, if repeaters are used, ultra-long-distance transmission is theoretically possible. Therefore, in typical optical communication systems, the distance between remote server 1000 and optical network terminal 100 can typically reach several thousand meters, tens of kilometers, or even hundreds of kilometers.

[0047] One end of the network cable 103 is connected to the local information processing device 2000, and the other end is connected to the optical network terminal 100. The local information processing device 2000 can be any one or more of the following devices: a router, a switch, a computer, a mobile phone, a tablet computer, a television, etc.

[0048] The physical distance between the remote server 1000 and the optical network terminal 100 is greater than the physical distance between the local information processing device 2000 and the optical network terminal 100. The connection between the local information processing device 2000 and the remote server 1000 is completed by the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is completed by the optical module 200 and the optical network terminal 100.

[0049] Optical module 200 includes an optical port and an electrical port. The optical port is configured to connect to optical fiber 101, thereby establishing a bidirectional optical signal connection between optical module 200 and optical fiber 101. The electrical port is configured to connect to optical network terminal 100, thereby establishing a bidirectional electrical signal connection between optical module 200 and optical network terminal 100. Optical module 200 converts optical signals into electrical signals, thereby establishing a connection between optical fiber 101 and optical network terminal 100. For example, optical signals from optical fiber 101 are converted into electrical signals by optical module 200 and then input into optical network terminal 100. Similarly, electrical signals from optical network terminal 100 are converted into optical signals by optical module 200 and then input into optical fiber 101.

[0050] The optical network terminal 100 includes a roughly rectangular housing, and an optical module interface 102 and a network cable interface 104 disposed on the housing. The optical module interface 102 is configured to connect to the optical module 200, thereby establishing a bidirectional electrical signal connection between the optical network terminal 100 and the optical module 200. The network cable interface 104 is configured to connect to the network cable 103, thereby establishing a bidirectional electrical signal connection between the optical network terminal 100 and the network cable 103. The connection between the optical module 200 and the network cable 103 is established through the optical network terminal 100. For example, the optical network terminal 100 transmits electrical signals from the optical module 200 to the network cable 103, and transmits signals from the network cable 103 to the optical module 200. Therefore, the optical network terminal 100 serves as the host computer of the optical module 200 and can monitor the operation of the optical module 200. In addition to the optical network terminal 100, the host computer of the optical module 200 may also include an optical line terminal (OLT), etc.

[0051] The remote server 1000 establishes a bidirectional signal transmission channel with the local information processing device 2000 through the optical fiber 101 , the optical module 200 , the optical network terminal 100 and the network cable 103 .

[0052] Figure 2 is a structural diagram of an optical network terminal according to some embodiments. To clearly illustrate the connection between optical module 200 and optical network terminal 100, Figure 2 only shows the structure of optical network terminal 100 related to optical module 200. As shown in Figure 2, optical network terminal 100 also includes a PCB circuit board 105 disposed within a housing, a cage 106 disposed on the surface of PCB circuit board 105, and an electrical connector disposed within cage 106. The electrical connector is configured to connect to the electrical port of optical module 200; the heat sink 107 has raised portions, such as fins, to increase the heat dissipation area.

[0053] The optical module 200 is inserted into the cage 106 of the optical network terminal 100. The cage 106 secures the optical module 200. Heat generated by the optical module 200 is transferred to the cage 106 and then dissipated through the heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 connects to the electrical connector inside the cage 106, thereby establishing a bidirectional electrical signal connection between the optical module 200 and the optical network terminal 100. Furthermore, the optical port of the optical module 200 connects to the optical fiber 101, thereby establishing a bidirectional electrical signal connection between the optical module 200 and the optical fiber 101.

[0054] Figure 3 is a structural diagram of an optical module according to some embodiments, and Figure 4 is an exploded view of an optical module according to some embodiments. As shown in Figures 3 and 4, the optical module 200 includes a housing, a circuit board 300 disposed within the housing, and an optical transceiver assembly 400.

[0055] The housing includes an upper housing 201 and a lower housing 202 . The upper housing 201 covers the lower housing 202 to form the housing with two openings. The outer contour of the housing is generally a square.

[0056] In some embodiments of the present disclosure, the lower shell 202 includes a base plate and two lower side plates located on both sides of the base plate and arranged perpendicular to the base plate; the upper shell 201 includes a cover plate, which is covered on the two lower side plates of the lower shell 202 to form the above-mentioned shell.

[0057] In some embodiments, the lower shell 202 includes a base plate and two lower side plates located on both sides of the base plate and arranged perpendicularly to the base plate; the upper shell 201 includes a cover plate and two upper side plates located on both sides of the cover plate and arranged perpendicularly to the cover plate, and the two upper side plates are combined with the two lower side plates to achieve the upper shell 201 covering the lower shell 202.

[0058] The direction of the line connecting the two openings 204 and 205 can be consistent with the length direction of the optical module 200, or it can be inconsistent with the length direction of the optical module 200. For example, opening 204 is located at the end of the optical module 200 (the right end in Figure 3), and opening 205 is also located at the end of the optical module 200 (the left end in Figure 3). Alternatively, opening 204 is located at the end of the optical module 200, while opening 205 is located on the side of the optical module 200. Opening 204 is an electrical port, and the gold finger of the circuit board 300 extends from the electrical port 204 and is inserted into the host computer (for example, the optical network terminal 100); opening 205 is an optical port, which is configured to connect to the external optical fiber 101, so that the external optical fiber 101 can connect to the optical transceiver assembly 400 inside the optical module 200.

[0059] The combined assembly of the upper housing 201 and the lower housing 202 facilitates installation of components such as the circuit board 300 and the optical transceiver assembly 400 within the housing, with the upper housing 201 and the lower housing 202 providing encapsulation and protection for these components. Furthermore, during assembly of the circuit board 300 and the optical transceiver assembly 400, the positioning, heat dissipation, and electromagnetic shielding components of these components are easily arranged, facilitating automated production.

[0060] In some embodiments, the upper shell 201 and the lower shell 202 are generally made of metal materials, which are conducive to electromagnetic shielding and heat dissipation.

[0061] In some embodiments, the optical module 200 further includes an unlocking component 203 located outside its housing. The unlocking component 203 is configured to achieve a fixed connection between the optical module 200 and the host computer, or to release the fixed connection between the optical module 200 and the host computer.

[0062] For example, the unlocking component 203 is located on the outer walls of the two lower side panels of the lower housing 202 and has engaging features that mate with the cage of the host computer (e.g., the cage 106 of the optical network terminal 100). When the optical module 200 is inserted into the cage of the host computer, the engaging features of the unlocking component 203 secure the optical module 200 in the cage. When the unlocking component 203 is pulled, the engaging features of the unlocking component 203 move accordingly, thereby changing the connection between the engaging features and the host computer, thereby releasing the engaging relationship between the optical module 200 and the host computer, and allowing the optical module 200 to be removed from the cage of the host computer.

[0063] The circuit board 300 includes circuit traces, electronic components, and chips. The circuit traces connect the electronic components and chips together according to the circuit design to achieve functions such as power supply, electrical signal transmission, and grounding. Electronic components include, for example, capacitors, resistors, transistors, and metal-oxide-semiconductor field-effect transistors (MOSFETs). Chips include, for example, microcontroller units (MCUs), laser driver chips, limiting amplifiers, clock and data recovery (CDR) chips, power management chips, and digital signal processing (DSP) chips.

[0064] The circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also realize the load-bearing function. For example, the rigid circuit board can stably carry the above-mentioned electronic components and chips; when the optical transceiver component is located on the circuit board, the rigid circuit board can also provide stable load-bearing; the rigid circuit board can also be inserted into the electrical connector in the upper computer cage.

[0065] The circuit board 300 also includes gold fingers formed on its end surfaces. The gold fingers are composed of multiple independent pins. The circuit board 300 is inserted into the cage 106, and the gold fingers are electrically connected to the electrical connector inside the cage 106. The gold fingers can be provided only on one side of the circuit board 300 (for example, the upper surface shown in FIG4 ), or they can be provided on both the upper and lower surfaces of the circuit board 300 to accommodate applications requiring a large number of pins. The gold fingers are configured to establish an electrical connection with the host computer to achieve power supply, grounding, I2C signal transmission, data signal transmission, etc.

[0066] Of course, some optical modules also use flexible printed circuits. They are typically used in conjunction with rigid printed circuits to complement them. For example, a flexible printed circuit can be used to connect a rigid printed circuit to an optical transceiver assembly.

[0067] The optical transceiver assembly 400 includes an optical transmitting assembly and an optical receiving assembly. The optical transmitting assembly is configured to transmit an optical signal, and the optical receiving assembly is configured to receive an optical signal. For example, the optical transmitting assembly and the optical receiving assembly are combined to form an integrated optical transceiver assembly.

[0068] Figure 5 is a schematic diagram of the structure of an optical transceiver assembly in an optical module according to some embodiments, and Figure 6 is a schematic diagram of an exploded view of an optical transceiver assembly in an optical module according to some embodiments. As shown in Figures 5 and 6, the optical module according to some embodiments includes an optical transceiver assembly 400, which may include a first tube shell 410, an optical transmitter assembly, and an optical receiver assembly. The first tube shell 410 includes an incident light port, an integrated transceiver optical port, and a receiving light port. The optical transmitter assembly is connected to the first tube shell 410 via the incident light port, and the optical receiver assembly is connected to the first tube shell 410 via the receiving light port. A fiber optic adapter 500 is connected to the first tube shell 410 via the integrated transceiver optical port. The fiber optic adapter 500 can serve as a connector for optical fibers, allowing optical fibers to be connected through an optical interface. In this way, the light beam emitted by the optical transmitting component enters the first tube shell 410 through the incident light port, and the transmitted light beam is then coupled to the optical fiber adapter 500 through the transceiver integrated optical port via the first tube shell 410, thereby realizing light transmission; the received light beam transmitted by the optical fiber adapter 500 enters the first tube shell 410 through the transceiver integrated optical port, and the received light beam is then transmitted to the light receiving component through the first tube shell 410 through the receiving light port, thereby realizing light reception.

[0069] In some embodiments, the optical transceiver assembly 400 may include only one optical transmitting assembly and one optical receiving assembly, and the first tube shell 410 may include only one incident light port, one integrated transceiver optical port and one receiving light port. An optical transmitting assembly is connected to the first tube shell 410 through the incident light port, an optical receiving assembly is connected to the first tube shell 410 through the receiving light port, and the optical fiber adapter 500 is connected to the first tube shell 410 through the integrated transceiver optical port. In this way, one-way light transmission and one-way light reception can be achieved for the optical transceiver assembly 400.

[0070] In some embodiments, the optical transceiver assembly 400 may also include two optical emitting assemblies and two optical receiving assemblies. The first tube shell 410 includes two incident light ports, two receiving light ports and one transceiver-integrated optical port, that is, the optical transceiver assembly 400 includes a first optical emitting assembly 420, a second optical emitting assembly 430, a first optical receiving assembly 440 and a second optical receiving assembly 450. The first tube shell 410 includes a first incident light port, a second incident light port, a first receiving light port, a second receiving light port and a transceiver-integrated optical port. The first optical emitting assembly 420 is connected to the first tube shell 410 through the first incident light port, the second optical emitting assembly 430 is connected to the first tube shell 410 through the second incident light port, the first optical receiving assembly 440 is connected to the first tube shell 410 through the first receiving light port, the second optical receiving assembly 450 is connected to the first tube shell 410 through the second receiving light port, and the optical fiber adapter 500 is connected to the first tube shell 410 through the transceiver-integrated optical port.

[0071] In some embodiments, the second optical transmission assembly 430 has an innovative and optimized structural design, and adopts materials such as TO56 1490 header and cap that are common to low-speed GPON OLTs, thereby achieving low-cost and universal design of the product.

[0072] The first incident light port is located on the left side of the first tube housing 410, the second incident light port is located on the upper side of the first tube housing 410, the first receiving light port is located on the upper side of the first tube housing 410, the second receiving light port is located on the lower side of the first tube housing 410, and the transceiver integrated light port is located on the right side of the first tube housing 410. That is, the first incident light port and the transceiver integrated light port are arranged opposite each other, the second incident light port and the first receiving light port are located on the same side of the first tube housing 410, and the first receiving light port and the second receiving light port are arranged opposite each other.

[0073] Since the emission direction of the light beam emitted by the first optical emission component 420 is in the same direction as the light beam receiving direction of the optical fiber adapter 500, that is, the emission direction of the first optical emission component 420 is parallel to the circuit board 300, and the light receiving direction of the optical fiber adapter 500 is also parallel to the circuit board 300, the light beam emitted by the first optical emission component 420 enters the first tube shell 410 through the first incident light port, and the emitted light beam is directly coupled to the optical fiber adapter 500 through the first tube shell 410, thereby realizing the emission of one path of light.

[0074] In some embodiments, a coupling lens is provided at the light output end of the first light emitting component 420 , and the laser beam emitted by the laser in the first light emitting component 420 is converted into a convergent beam via the coupling lens, and the convergent beam is emitted into the first tube shell 410 via the first incident light port.

[0075] In some embodiments, the first light beam emitted by the first light emitting assembly 420 is transmitted along the central axis of the transceiver optical port, such that the first light beam passes through the first tube housing 410 and enters the fiber optic adapter 500. It should be noted that the central axis of the transceiver optical port refers to an axis passing through the center of the transceiver optical port and perpendicular to the surface on which the transceiver optical port is located.

[0076] Because the emission direction of the light beam from the second optical emitting assembly 430 is different from the light beam receiving direction of the optical fiber adapter 500—that is, the emission direction of the second optical emitting assembly 430 is perpendicular to the circuit board 300, while the light receiving direction of the optical fiber adapter 500 is parallel to the circuit board 300—the light beam from the second optical emitting assembly 430 must be reflected by the first housing 410 so that the emission direction of the reflected light beam is aligned with the light receiving direction of the optical fiber adapter 500. Thus, the light beam from the second optical emitting assembly 430 enters the first housing 410 through the second incident light port. After being reflected by the first housing 410, the light beam is coupled into the optical fiber adapter 500, achieving another path of light transmission.

[0077] In some embodiments, the second emission light beam emitted by the second optical emission component 430 is reflected by the first tube shell 410, and the reflected second emission light beam is transmitted along the central axis direction of the transceiver integrated optical port, so that the reflected second emission light beam passes through the first tube shell 410 and is emitted into the optical fiber adapter 500.

[0078] In some embodiments, an optical element 401 is disposed in the first tube shell 410, and the optical element 401 is located at the intersection of the emission light path of the first light emitting component 420 and the emission light path of the second light emitting component 430, that is, the optical element 401 is located in the light beam emission direction of the first light emitting component 420 and the second light emitting component 430 at the same time.

[0079] Optical element 401 has the function of transmitting the first emission light beam and reflecting the second emission light beam. The first emission light beam and the reflected second emission light beam can be combined through optical element 401, and the combined light beam is coupled to the fiber optic adapter 500. In this way, the first emission light beam emitted by the first optical transmission component 420 can directly pass through the optical element 401, and the second emission light beam emitted by the second optical transmission component 430 is reflected at the optical element 401. The reflected second emission light beam has the same emission direction as the first emission light beam, so the first emission light beam and the reflected second emission light beam are combined at the optical element 401.

[0080] The optical element 401 has a transmission surface and a reflection surface. The transmission surface is arranged opposite to the first light emitting component 420, so that the first emission light beam emitted by the first light emitting component 420 directly passes through the optical element 401 via the transmission surface; the reflection surface is arranged opposite to the second light emitting component 430, so that the second emission light beam emitted by the second light emitting component 430 is reflected by the reflection surface, and the reflected second emission light beam is transmitted along the emission direction of the first emission light beam, and the reflected second emission light beam and the first emission light beam are combined at the reflection surface.

[0081] In some embodiments, the optical element 401 may be a filter, a prism with a filter or a filter film attached thereto, or other structures, as long as the optical element 401 has the function of transmitting the first emission light beam and reflecting the second emission light beam.

[0082] In some embodiments, the optical element 401 is a filter. The filter is small in size and occupies a small space, which is conducive to the miniaturization design of the optical transceiver component 400.

[0083] In some embodiments, by simulating the optical path and performing dispersion analysis, the astigmatism generated by the optical element 401 is offset by the inherent astigmatism of the laser in the first optical emission assembly 420, achieving a high coupling efficiency of 60% and a high utilization rate of the homemade chip.

[0084] In some embodiments, the wavelength of the first emission light beam may be 1270 nm, 1310 nm, 1490 nm, or 1577 nm, etc., and correspondingly, the wavelength of the second emission light beam may also be 1270 nm, 1310 nm, 1490 nm, or 1577 nm, etc.

[0085] In some embodiments, the wavelength of the first emission light beam is 1577 nm, and the wavelength of the second emission light beam is 1490 nm. In this way, the optical element 401 has the function of transmitting 1577 nm and reflecting 1490 nm. The first emission light beam of 1577 nm emitted by the first optical emission component 420 directly passes through the optical element 401, and the second emission light beam of 1490 nm emitted by the second optical emission component 430 is reflected at the optical element 401. The reflected second emission light beam is combined with the first emission light beam and transmitted to the optical fiber adapter 500.

[0086] Because the light beam received by the first optical receiving assembly 440 is in a different direction than the light beam emitted by the optical fiber adapter 500—that is, the light beam received by the first optical receiving assembly 440 is perpendicular to the circuit board 300, while the light beam emitted by the optical fiber adapter 500 is parallel to the circuit board 300—the light beam received by the optical fiber adapter 500 must be reflected by the first housing 410 so that the reflected light beam's emission direction is aligned with the light beam received by the first optical receiving assembly 440. Thus, the external light beam received by the optical fiber adapter 500 enters the first housing 410 through the integrated transceiver port. The light beam reflected by the first housing 410 is then coupled to the first optical receiving assembly 440, achieving single-path light reception.

[0087] Because the light beam received by the second optical receiving assembly 450 is in a different direction than the light beam emitted by the optical fiber adapter 500—that is, the light beam received by the second optical receiving assembly 450 is perpendicular to the circuit board 300, while the light beam emitted by the optical fiber adapter 500 is parallel to the circuit board 300—the light beam received by the optical fiber adapter 500 must be reflected by the first housing 410 so that the reflected light beam's emission direction is aligned with the light beam received by the second optical receiving assembly 450. In this way, the external light beam received by the optical fiber adapter 500 enters the first housing 410 through the integrated transceiver port. The light beam reflected by the first housing 410 is then coupled to the second optical receiving assembly 450, achieving reception of another path of light.

[0088] In some embodiments, a splitter component 470 is further provided in the first tube shell 410. The splitter component 470 is located in the receiving direction of the integrated transceiver optical port to receive the external light beam, and the splitter component 470 is close to the first light receiving component 440 and the second light receiving component 450. The multi-path receiving light beams transmitted by the optical fiber adapter 500 are separated by the splitter component 470 and transmitted to the first light receiving component 440 and the second light receiving component 450 respectively.

[0089] The spectrometer component 470 has the function of reflective spectrometry. The first receiving light beam and the second receiving light beam that are incident on the first tube shell 410 through the integrated transceiver optical port are reflected and spectrometered at the spectrometer component 470. The first receiving light beam separated by the spectrometer component 470 is transmitted to the first light receiving component 440, and the second receiving light beam separated by the spectrometer component 470 is transmitted to the second light receiving component 450.

[0090] Figure 7 is a schematic diagram of the structure of a housing in an optical module according to some embodiments, Figure 8 is a schematic diagram of the structure of a housing in an optical module according to some embodiments at another angle, Figure 9 is a schematic diagram of the structure of a housing in an optical module according to some embodiments at a third angle α, and Figure 10 is a cross-sectional view of a housing in an optical module according to some embodiments. As shown in Figures 7, 8, 9, and 10, the first housing 410 includes a first side surface 4101, a top surface 4103, a second side surface 4106, and a bottom surface 4108. The first side surface 4101 and the second side surface 4106 are disposed opposite each other, and the top surface 4103 and the bottom surface 4108 are disposed opposite each other. The ends of the top surface 4103 are connected to the first side surface 4101 and the second side surface 4106, respectively.

[0091] A first light input port 4102 is provided on the first side surface 4101. The first light input port 4102 communicates with the inner cavity of the first tube housing 410. The first light emitting assembly 420 is connected to the first tube housing 410 through the first side surface 4101. Thus, the first light beam emitted by the first light emitting assembly 420 enters the first tube housing 410 through the first light input port 4102. In some embodiments, the first light emitting assembly 420 can be fixedly connected to the first side surface 4101 via an adjustable sleeve.

[0092] In some embodiments, when the first optical transmission assembly 420 is fixedly connected to the first side surface 4101 of the first housing 410 via an adjustment sleeve, laser welding can be performed after power coupling between the first optical transmission assembly 420, the first housing 410, and the fiber optic adapter 500 to improve the coupling efficiency between the first optical transmission assembly 420 and the fiber optic adapter 500.

[0093] A second light input port 4104 is provided on the top surface 4103. The second light input port 4104 communicates with the inner cavity of the first tube housing 410. The second light emitting assembly 430 is connected to the first tube housing 410 via the second light input port 4104. Thus, the second light beam emitted by the second light emitting assembly 430 enters the first tube housing 410 via the second light input port 4104. In some embodiments, the second light emitting assembly 430 can be inserted into the second light input port 4104, with the outer wall of the second light emitting assembly 430 bonded and fixed to the inner wall of the second light input port 4104.

[0094] A first light output port 4105 is also provided on the top surface 4103. The first light output port 4105 is connected to the inner cavity of the first tube shell 410. The first light receiving component 440 is connected to the first tube shell 410 through the first light output port 4105. In this way, the first receiving light beam received by the first tube shell 410 is emitted into the first light receiving component 440 through the first light output port 4105.

[0095] An integrated transceiver optical port 4107 is provided on the second side surface 4106. This integrated transceiver optical port 4107 communicates with the inner cavity of the first housing 410. The fiber optic adapter 500 is connected to the first housing 410 via this integrated transceiver optical port 4107. Thus, the received light beam transmitted by the fiber optic adapter 500 is emitted into the first housing 410 via this integrated transceiver optical port 4107. In some embodiments, the fiber optic adapter 500 is inserted into the first housing 410 via the integrated transceiver optical port 4107 to achieve a fixed connection between the fiber optic adapter 500 and the first housing 410.

[0096] A second light exit port 4109 is provided on the bottom surface 4108 and communicates with the inner cavity of the first tube housing 410. The second light receiving assembly 450 is connected to the first tube housing 410 via the bottom surface 4108. Thus, the second light beam received by the first tube housing 410 is emitted into the second light receiving assembly 450 via the second light exit port 4109. In some embodiments, the second light receiving assembly 450 can be inserted into the second light exit port 4109, and the outer wall of the second light receiving assembly 450 is bonded and fixed to the inner wall of the second light exit port 4109.

[0097] The inner cavity within the first tube shell 410 includes a first inner cavity 4110, a second inner cavity 4113 and a third inner cavity 4114. The first inner cavity 4110 is connected to the third inner cavity 4114 through the second inner cavity 4113. The first inner cavity 4110 is connected to the first incident light port 4102 and the second incident light port 4104. The optical element 401 is located in the first inner cavity 4110; the third inner cavity 4114 is connected to the first output light port 4105, the second output light port 4109, and the transceiver integrated light port 4107. The optical splitter component 470 is located in the third inner cavity 4114.

[0098] A support platform 4111 is disposed within the first inner cavity 4110. The support platform 4111 is tilted downward from the first light input port 4102 toward the second inner cavity 4113. This means that the distance between the support platform 4111 and the second light input port 4104 gradually increases along the emission direction of the first emitted light beam, forming a first angle between the support platform 4111 and the emission optical axis. In some embodiments, the first angle is 45 degrees.

[0099] The transmissive surface of the optical element 401 is attached to the supporting platform 4111, so that there is a first angle between the optical element 401 and the emission light axis. The second emission light beam emitted by the second light emitting component 430 is reflected on the reflective surface of the optical element 401, and the reflected second emission light beam has the same emission direction as the first emission light beam.

[0100] In some embodiments, to facilitate the transmission of the first emission light beam emitted by the first light emitting assembly 420 through the optical element 401, a light-transmitting hole is provided on the support platform 4111, and the light-transmitting hole is connected to the first inner cavity 4110. In this way, the first emission light beam emitted by the first light emitting assembly 420 passes through the first inner cavity 4110 and the light-transmitting hole to the optical element 401, and the first emission light beam directly passes through the optical element 401.

[0101] In some embodiments, the light-transmitting hole on the supporting platform 4111 can be a direct opening or a platform area made of a light-transmitting material, as long as the first emission light beam emitted by the first light-emitting component 420 can pass through the light-transmitting hole and the optical element 401.

[0102] In some embodiments, when the first emission light beam is transmitted through the optical element 401, most (approximately 95%) of the first emission light beam directly passes through the optical element 401, but a portion (approximately 5%) of the first emission light beam may be reflected at the transmission surface of the optical element 401, and the reflected first emission light beam may be reflected again at the inner wall of the first inner cavity 4110. The first emission light beam after re-reflection may be emitted into the second light emitting component 430 through the second incident light port 4104, causing crosstalk of the reflected light on the second emission light beam.

[0103] To prevent the reflected first emission light beam from causing crosstalk with the second emission light beam, an inclined surface 4112 is provided on the inner wall of the first inner cavity 4110. This inclined surface 4112 is located below the support platform 4111, and the distance between the inclined surface 4112 and the second incident light port 4104 gradually decreases along the emission direction of the first emission light beam. In this way, after a portion of the first emission light beam is reflected at the transmission surface of the optical element 401, the reflected first emission light beam is reflected again at the inclined surface 4112. Since the inclined surface 4112 is inclined, the re-reflected first emission light beam diverges outward, which can reduce the amount of the re-reflected first emission light beam entering the second incident light port 4104, thereby effectively reducing the crosstalk of the reflected light on the second emission light beam.

[0104] In order to reduce the incidence of the first emission light beam reflected by the inclined surface 4112 on the second incident light port 4104, a second angle is formed between the inclined surface 4112 and the emission optical axis. In some embodiments, the second angle is 20° to 50°.

[0105] In some embodiments, the first emission light beam emitted by the first optical transmission component 420 is transmitted through the optical element 401 and then transmitted to the optical fiber adapter 500. Due to changes in the medium and the reflection of light at the interface between different media, when the first emission light beam passes through the second inner cavity 4113 and the third inner cavity 4114 and is emitted to the optical fiber end face in the optical fiber adapter 500, most of the first emission light beam directly passes through the optical fiber end face and enters the optical fiber adapter 500, while a small portion of the first emission light beam is reflected at the optical fiber end face. The reflected first emission light beam may return to the first optical transmission component 420 along the original path, thereby affecting the emission performance of the first optical transmission component 420.

[0106] In order to prevent the reflected first emission light beam from returning to the first optical emission component 420 along the original path, an isolator can be provided in the second inner cavity 4113. The first emission light beam passing through the optical element 401 directly passes through the isolator and enters the optical fiber adapter 500. The isolator can isolate the first emission light beam reflected at the optical fiber end face of the optical fiber adapter 500 to prevent the reflected first emission light beam from returning to the first optical emission component 420, thereby ensuring the emission performance of the first optical emission component 420.

[0107] In some embodiments, the first light beam emitted by the first light emitting component 420 through the coupling lens at the light output end of the first light emitting component 420 is convergent light, and the spot of the convergent light at the focus is the smallest. Therefore, the isolator can be set at the focus position of the first light beam. At this time, the required isolator size is minimized, thereby ensuring that the aperture of the second inner cavity 4113 required by the isolator is minimized, which is conducive to the miniaturization design of the first tube shell 410.

[0108] The spectrometer assembly 470 provided in the third inner cavity 4114 includes a support frame 4710 and a plurality of spectrometers. The spectrometers are fixed on the support frame 4710 , and the support frame 4710 is fixed in the third inner cavity 4114 . In this way, the plurality of spectrometers are fixed in the third inner cavity 4114 through the support frame 4710 .

[0109] Figure 11 is a schematic diagram of the structure of a support frame in an optical module according to some embodiments, Figure 12 is a schematic diagram of the structure of the support frame in an optical module according to some embodiments from another angle, and Figure 13 is a cross-sectional view of the support frame in an optical module according to some embodiments. As shown in Figures 11, 12, and 13, the support frame 4710 includes a first connecting portion 4704, a supporting portion, and a second connecting portion 4705. The first connecting portion 4704 is connected to the second connecting portion 4705 via the supporting portion, and the first connecting portion 4704 faces away from the fiber optic adapter 500. The second connecting portion 4705 is fixedly connected to the fiber optic adapter 500.

[0110] A light hole 4706 is provided in the support frame 4710, which passes through the first connecting part 4704, the supporting part and the second connecting part 4705. The first emission light beam passing through the optical element 401 and the second emission light beam reflected at the optical element 401 pass through the light hole 4706 of the support frame 4710 and enter the optical fiber adapter 500.

[0111] The support portion is provided with a first supporting surface 4701, a first limiting surface 4709, a second supporting surface 4702, a second limiting surface 4703, and a third supporting surface 4707. The first supporting surface 4701 is arranged at an angle, that is, along the emission direction of the first emitted light beam (from left to right), the distance between the first supporting surface 4701 and the first connecting portion 4704 gradually increases. The first limiting surface 4709 is located at the lower left of the first supporting surface 4701. The end face of a beam splitter abuts against the first limiting surface 4709, and the side face of the beam splitter is adhered to the first supporting surface 4701. Thus, the beam splitter is fixed to the support portion via the first supporting surface 4701 and the first limiting surface 4709.

[0112] The second supporting surface 4702 is tilted, such that the distance between the second supporting surface 4702 and the second connecting portion 4705 gradually decreases along the emission direction of the first emitted light beam (from left to right). The second limiting surface 4703 is located to the lower right of the second supporting surface 4702. The end face of another beam splitter abuts against the second limiting surface 4703. The side face of the beam splitter is affixed to the second supporting surface 4702, and the other end face of the beam splitter abuts against the top surface of the first connecting portion 4704. Thus, the second supporting surface 4702, the second limiting surface 4703, and the top surface of the first connecting portion 4704 secure the other beam splitter to the supporting portion.

[0113] In some embodiments, the light hole in the support portion passes through the first support surface 4701 and the second support surface 4702 , and the beam splitter fixed on the second support surface 4702 is located above the beam splitter fixed on the first support surface 4701 .

[0114] A third supporting surface 4707 is provided on the side of the support portion facing the second light exit port 4109. This third supporting surface 4707 is inclined such that the distance between the third supporting surface 4707 and the second light exit port 4109 gradually decreases along the emission direction of the first emitted light beam. The side surface of the third beam splitter is adhered to the third supporting surface 4707, thereby securing the third beam splitter to the support portion via the third supporting surface 4707.

[0115] In some embodiments, a through hole 4708 is provided on the third supporting surface 4707, and the through hole 4708 is connected to the light-through hole in the supporting portion. The multiple receiving light beams transmitted by the optical fiber adapter 500 are reflected at the first optical splitter on the first supporting surface 4701, and the reflected receiving light beams are emitted to the second optical splitter on the third supporting surface 4707. The second optical splitter splits the multiple receiving light beams, and one receiving light beam passes through the second optical splitter and enters the second optical receiving component 450, and the other receiving light beam is reflected again at the second optical splitter, and the receiving light beam after re-reflection directly passes through the third optical splitter on the second supporting surface 4702, and the receiving light beam passing through the third optical splitter is emitted into the first optical receiving component 440.

[0116] Figure 14 is a cross-sectional view of the assembly of a spectrometer assembly and a fiber optic adapter in an optical module according to some embodiments. As shown in Figure 14, the fiber optic adapter 500 includes a connecting sleeve 520, an internal optical fiber 530, an outer sleeve 540, and an inner sleeve 550. The connecting sleeve 520 is fixedly connected to the outer sleeve 540, and the inner sleeve 550 is fixed to the side wall of the inner cavity of the outer sleeve 540. The internal optical fiber 530 is fixed within the inner cavity of the outer sleeve 540 through the inner sleeve 550. The connecting sleeve 520 is provided with a mounting hole that communicates with the inner cavity of the outer sleeve 540. A converging lens 510 is disposed within the mounting hole. The converging lens 510 protrudes from the connecting sleeve 520 and is inserted into the light-through hole of the second connecting portion 4705. In this way, the first receiving light beam and the second receiving light beam transmitted by the internal optical fiber 530 in the optical fiber adapter 500 are converted into collimated light beams through the converging lens 510 , and the collimated light beams are emitted into the support frame 4710 through the light hole in the second connecting part 4705 .

[0117] In some embodiments, a collimating lens 4115 is provided in the light hole in the first connecting portion 4704. The collimating lens 4115 is configured to convert the first emission light beam passing through the optical element 401 and the second emission light beam reflected at the optical element 401 into collimated light beams, respectively. The collimated light beam is directly emitted into the converging lens 510 through the beam splitter on the first supporting surface 4701. The collimated light beam is converted into a convergent light beam via the converging lens 510, and the convergent light beam converges into the internal optical fiber 530.

[0118] The optical splitter component 470 includes a first optical splitter 4116, a second optical splitter 4118 and a third optical splitter 4117. The first optical splitter 4116 faces the optical fiber adapter 500 and is configured to reflect the multiple received light beams from the optical fiber adapter 500; the second optical splitter 4118 faces the second optical receiving component 450 and is configured to split the multiple received light beams after reflection from the first optical splitter 4116, so that one received light beam directly passes through the second optical splitter 4118 and enters the second optical receiving component 450, and the other received light beam is reflected again at the second optical splitter 4118; the third optical splitter 4117 faces the first optical receiving component 440 and is configured to transmit the received light beam reflected again from the second optical splitter 4118, and the transmitted received light beam enters the first optical receiving component 440.

[0119] Figure 15 is a schematic diagram of the receiving optical path of an optical module according to some embodiments. As shown in Figure 15 , the lower end surface of the first beam splitter 4116 abuts against the first limiting surface 4709, and the side surface of the first beam splitter 4116 is attached to the first supporting surface 4701. A third angle α is formed between the first beam splitter 4116 and the transmitting optical axis. The first beam splitter 4116 has the function of reflecting the first and second received beams and is configured to reflect the first and second received beams transmitted by the fiber optic adapter 500. In some embodiments, the third angle α is between 40° and 50°.

[0120] In some embodiments, a portion of the first optical splitter 4116 exposed through the light-through hole is provided with a reflective surface a. When the first receiving light beam and the second receiving light beam transmitted by the optical fiber adapter 500 are incident on the reflective surface a of the first optical splitter 4116 , the first receiving light beam and the second receiving light beam are reflected at the reflective surface a of the first optical splitter 4116 .

[0121] The side of the second beam splitter 4118 is attached to the third support surface 4707 and is located outside the support frame 4710. A fourth angle β is formed between the second beam splitter 4118 and the emission optical axis. The second beam splitter 4118 reflects the first received light beam and transmits the second received light beam. It is configured to transmit and reflect the first and second received light beams after being reflected by the first beam splitter 4116. In some embodiments, the fourth angle β is between 6° and 20°.

[0122] In some embodiments, a transmissive surface is provided on the upper surface of the second beam splitter 4118 exposed through the through hole 4708, and a transmissive reflective surface b is provided on the lower surface of the second beam splitter 4118 located on the outside of the support frame 4710. The first receiving light beam and the second receiving light beam reflected by the first beam splitter 4116 are projected onto the second beam splitter 4118, and the reflected first receiving light beam is transmitted through the transmissive surface of the upper surface to the transmissive reflective surface b of the lower surface, and is reflected again on the transmissive reflective surface b; the reflected second receiving light beam sequentially passes through the transmissive surface of the upper surface and the transmissive reflective surface b of the lower surface, and the second receiving light beam passing through the second beam splitter 4118 is projected into the second light receiving component 450 through the second light output port 4109.

[0123] If a transflective surface is provided on the upper surface of the second beam splitter 4118, the lower surface of the second beam splitter 4118 must be attached to the third support surface 4707, which means that the second beam splitter 4118 must be placed within the through hole 4708, which increases the size of the support frame 4710. However, if a transflective surface is provided on the lower surface of the second beam splitter 4118, the second beam splitter 4118 can be attached to the outside of the support frame 4710. Only one through hole 4708 is required to facilitate the reception of the light beam to the second beam splitter 4118. This effectively reduces the size of the support frame 4710, facilitating a compact design of the first tube shell 410.

[0124] The right end surface of the third beam splitter 4117 abuts the second limiting surface 4703, the left end surface abuts the top surface of the first connecting portion 4704, and the lower side is attached to the second supporting surface 4702. A fifth angle γ is formed between the third beam splitter 4117 and the emission optical axis. The third beam splitter 4117 transmits the first received light beam and is configured to transmit the first received light beam after being reflected by the second beam splitter 4118. In some embodiments, the fifth angle γ is between 10° and 22°.

[0125] In some embodiments, a transmission surface c is provided on the lower surface of the third beam splitter 4117, and the first receiving light beam reflected by the second beam splitter 4118 directly passes through the third beam splitter 4117, and the first receiving light beam passing through the third beam splitter 4117 is emitted into the first light receiving component 440 through the first output light port 4105.

[0126] In some embodiments, a third angle α between the first beam splitter 4116 and the emission optical axis within the first tube housing 410 is 45°, a fourth angle β between the second beam splitter 4118 and the emission optical axis is 8°, and a fifth angle γ between the third beam splitter 4117 and the emission optical axis is 16°. Thus, the first and second received beams transmitted by the fiber optic adapter 500 are reflected by the first beam splitter 4116 and then by the second beam splitter 4118. The reflected second beam directly passes through the second beam splitter 4118. The reflected first beam is then reflected again by the second beam splitter 4118 and then directly passes through the third beam splitter 4117.

[0127] In some embodiments, the first beam splitter 4116, the second beam splitter 4118, and the third beam splitter 4117 may be filters, or prisms with filters or filter films attached thereto, or other structures, which are not specifically limited here.

[0128] In some embodiments, the first optical splitter 4116 , the second optical splitter 4118 , and the third optical splitter 4117 are all filters. The filters are small in size and occupy a small space, which is conducive to the miniaturization design of the first tube shell 410 .

[0129] The wavelength of the first received light beam can be 1270nm, 1310nm, 1490nm or 1577nm, etc., which is not specifically limited here; correspondingly, the wavelength of the second received light beam can be 1270nm, 1310nm, 1490nm or 1577nm, etc., which is not specifically limited here.

[0130] In some embodiments, the wavelength of the first received light beam is 1270nm, and the wavelength of the second received light beam is 1310nm. In this way, the first beam splitter 4116 has the function of reflecting wavelengths of 1270nm and 1310nm, and the second beam splitter 4118 has the function of transmitting the wavelength of 1310nm and reflecting the wavelength of 1270nm. At the same time, the second beam splitter 4118 has the function of isolating wavelengths such as 1490nm and 1577nm; the third beam splitter 4117 has the function of transmitting the wavelength of 1270nm.

[0131] In some embodiments, the receiving optical axis of the second optical receiving assembly 450 is perpendicular to the circuit board 300. If the receiving optical axis of the first optical receiving assembly 440 is also perpendicular to the circuit board 300, a fourth optical splitter is also required. The fourth optical splitter is configured to re-reflect the reflected receiving light beam from the second optical splitter 4118. The receiving light beam reflected by the fourth optical splitter is then transmitted to the third optical splitter 4117. Using four optical splitters to split the two receiving light beams in this manner occupies a large space and does not take advantage of the compact design of the first tube housing 410.

[0132] In order to facilitate the miniaturization design of the first tube shell 410, the receiving light axis of the first light receiving component 440 can be tilted, and the third beam splitter 4117 is also tilted at a preset angle, so that the receiving light beam reflected by the second beam splitter 4118 can directly pass through the third beam splitter 4117 and enter the tilted first light receiving component 440.

[0133] Figure 16 is a schematic diagram of the structure of a bracket in an optical module according to some embodiments, and Figure 17 is a schematic diagram of the structure of a bracket in an optical module according to some embodiments from another angle. As shown in Figures 16 and 17, in order to tilt the first light receiving assembly 440, a bracket 460 is provided at the first light output port 4105. The bracket 460 includes a mounting groove and an insertion surface 4603. The insertion surface 4603 is inserted into the first light output port 4105, and the insertion surface 4603 is fixedly connected to the inner side wall of the first light output port 4105 to fix the bracket 460 at the first light output port 4105.

[0134] The mounting slot includes a mounting surface 4601. An opening is provided at one end of the mounting slot facing away from the insertion surface 4603, and the opening is disposed opposite the mounting surface 4601. The mounting surface 4601 is inclined such that the distance between the mounting surface 4601 and the central axis of the first tube shell 410 gradually decreases along the light emission direction. In other words, the inclination direction of the mounting surface 4601 is the same as the inclination direction of the third beam splitter 4117.

[0135] In some embodiments, a fifth angle γ is formed between the mounting surface 4601 and the emission optical axis in the first tube shell 410, that is, the angle between the mounting surface 4601 and the emission optical axis is the same as the angle between the third beam splitter 4117 and the emission optical axis, and the mounting surface 4601 and the third beam splitter 4117 are arranged parallel to each other.

[0136] The mounting surface 4601 is provided with a light-transmitting hole 4602 , which passes through the mounting surface 4601 and the insertion surface 4603 . The light-transmitting hole 4602 is provided corresponding to the first light output port 4105 . The first received light beam passing through the third beam splitter 4117 passes through the first light output port 4105 and enters the light-transmitting hole 4602 .

[0137] The first light receiving component 440 is inserted into the mounting groove, and the outer side wall of the first light receiving component 440 is fixedly connected to the side wall of the mounting groove and the mounting surface 4601. In this way, the first light receiving component 440 is tiltedly set on the first tube shell 410 through the bracket 460, and the first receiving light beam passing through the third spectrometer 4117 passes through the first output light port 4105 and the light-transmitting hole 4602 in sequence and is emitted into the first light receiving component 440.

[0138] FIG18 is a schematic diagram of the structure of an optical transceiver device in an optical module according to some embodiments. As shown in FIG18 , the collimating lens 4115 is installed in the light hole of the first connecting portion 4704 in the support frame 4710, and then the first optical splitter 4116 is installed on the first supporting surface 4701, the second optical splitter 4118 is installed on the third supporting surface 4707, and the third optical splitter 4117 is installed on the second limiting surface 4703 and the second supporting surface 4702 to complete the assembly of the optical splitter component 470, and the assembled optical splitter component 470 is installed in the third inner cavity 4114 of the first tube shell 410; then the optical fiber adapter 500 provided with the converging lens 510 is inserted into the third optical port 4107 through the transceiver integrated optical port 4107. The optical fiber adapter 500 is fixedly connected to the first tube shell 410 by inserting the converging lens 510 into the inner cavity 4114, and the optical fiber adapter 500 is fixedly connected to the first tube shell 410 by inserting the converging lens 510 into the second connecting portion 4705 of the supporting frame 4710. The optical element 401 is then installed on the supporting platform 4111 of the first inner cavity 4110, so that the central axes of the optical element 401, the collimating lens 4115, the first beam splitter 4116, and the converging lens 510 are located on the same straight line. The isolator 600 is then installed in the second inner cavity 4113 to complete the assembly of the optical element 401, the isolator 600, and the beam splitting component 470 in the first tube shell 410.

[0139] After completing the assembly of the first tube shell 410, the optical element 401, the isolator 600 and the spectrometer assembly 470, the first optical emitting assembly 420 is laser welded to the first side surface 4101 of the first tube shell 410 through the adjusting sleeve, so that the first emission light beam emitted by the first optical emitting assembly 420 is emitted into the first inner cavity 4110 through the first incident light port 4102 on the first side surface 4101; then, the second optical emitting assembly 430 is inserted into the first tube shell 410 through the second incident light port 4104, and the second optical receiving assembly 450 is inserted into the first tube shell 410 through the second output light port 4109; then, the bracket 460 is inserted into the first tube shell 410 through the first output light port 4105, and the first optical receiving assembly 440 is fixed in the mounting groove of the bracket 460 to complete the assembly of the optical transceiver assembly 400.

[0140] After the assembly of the optical transceiver assembly 400 is completed, the first transmission light beam emitted by the first optical transmission assembly 420 passes through the optical element 401 and the isolator 600 in sequence. The first transmission light beam passing through the isolator 600 is converted into a parallel light beam via the collimating lens 4115. The parallel light beam passes through the first beam splitter 4116 and is emitted into the internal optical fiber 530 of the optical fiber adapter 500 via the converging lens 510, thereby realizing the emission of the first transmission light beam.

[0141] The second emission light beam emitted by the second optical emission component 430 is reflected by the optical element 401, and the reflected second emission light beam passes through the isolator 600. The second emission light beam passing through the isolator 600 is converted into a parallel light beam via the collimating lens 4115. The parallel light beam passes through the first beam splitter 4116 and is emitted into the internal optical fiber 530 of the optical fiber adapter 500 via the converging lens 510, thereby realizing the emission of the second emission light beam.

[0142] In some embodiments, the first emission light beam and the second emission light beam can be combined at the optical element 401, that is, the second emission light beam is reflected at the optical element 401, and the reflected second emission light beam is combined with the first emission light beam that passes through the optical element 401. The combined light passes through the isolator 600, and the combined light that passes through the isolator 600 is converted into a parallel light beam via the collimating lens 4115. The parallel light beam passes through the first beam splitter 4116 and is emitted into the internal optical fiber 530 of the optical fiber adapter 500 via the converging lens 510, thereby realizing the emission of the first emission light beam and the second emission light beam at the same time.

[0143] The first receiving light beam and the second receiving light beam transmitted through the optical fiber adapter 500 are converted into the first receiving parallel light and the second receiving parallel light via the converging lens 510. The first receiving parallel light and the second receiving parallel light are reflected to the second receiving parallel light via the first optical splitter 4116 to the second optical splitter 4118. The reflected second receiving parallel light directly passes through the second optical splitter 4118 and is incident into the second optical receiving component 450, thereby realizing the reception of the second receiving light beam.

[0144] The reflected first received parallel light is reflected again at the second beam splitter 4118 , and the reflected first received parallel light is directly transmitted through the third beam splitter 4117 into the first light receiving component 440 , thereby achieving reception of the first received light beam.

[0145] In some embodiments, the first received light beam and the second received light beam transmitted by the optical fiber adapter 500 may be separate lights of different wavelengths, or may be combined light including the first received light beam and the second received light beam.

[0146] In some embodiments, the first received light beam transmitted by the fiber optic adapter 500 is light having a wavelength of 1270±10 nm, and the second received light beam is light having a wavelength of 1310±20 nm. This means that the first received light beam can be light having a wavelength of 1280 nm, and the second received light beam can be light having a wavelength of 1290 nm. In this manner, the wavelengths of the first and second received light beams are relatively close to each other. The optical splitting function of the first optical splitter 4116, the second optical splitter 4118, and the third optical splitter 4117 provided herein can separate the first and second received light beams having a relatively close wavelength difference, thereby achieving dense wavelength splitting.

[0147] In this disclosure, an optical path system comprising three lenses (a coupling lens 4210 within the first optical transmitter assembly 420, a collimating lens 4115 within the first tube shell 410, and a converging lens 510 within the optical fiber adapter 500) and an optical path design that converts converged light into parallel light improves the coupling efficiency of the optical transceiver assembly 400. The innovative optical splitting design enables dense wavelength splitting within 6nm, which, compared to other industry solutions, can better meet the wavelength splitting requirements of the Comp-PON product protocol at a lower cost. This special optical path design enables the use of the best filters and minimizes insertion loss, achieving two-way transmission and two-way reception.

[0148] According to some embodiments of the optical module, the collimating lens 4115 in the first tube shell 410 and the converging lens 510 in the optical fiber adapter 500 are passively coupled. The collimating lens 4115 is directly assembled in the light-through hole of the first connecting part 4704, and the converging lens 510 is directly assembled in the mounting hole of the connecting sleeve 520, and the converging lens 510 is inserted into the light-through hole of the second connecting part 4705. In order to improve the coupling between the transmitting light path and the receiving light path in the first tube shell 410 and the optical fiber adapter 500, the installation accuracy of the collimating lens 4115 and the converging lens 510 is required to be high.

[0149] The above assembly method places high requirements on the positions of the structures in the first housing 410, which affects the processing efficiency of the first housing 410. Therefore, the coupling method of the collimating lens 4115 and the converging lens 510 can be improved to reduce the requirements on the positions of the structures in the first housing 410.

[0150] Figure 19 is a schematic diagram of the structure of another optical transceiver assembly in an optical module according to some embodiments, and Figure 20 is an exploded schematic diagram of another optical transceiver assembly in an optical module according to some embodiments. As shown in Figures 19 and 20, according to some embodiments, an optical transceiver assembly 400 may include a second housing 402, an optical transmitter assembly, and an optical receiver assembly. The second housing 402 includes an incident light port, an integrated transceiver optical port, and a receiving light port. The optical transmitter assembly is connected to the second housing 402 via the incident light port, the optical receiver assembly is connected to the second housing 402 via the receiving light port, and the optical fiber adapter 500 is connected to the second housing 402 via the integrated transceiver optical port. In this way, the light beam emitted by the optical transmitting component enters the second tube shell 402 through the incident light port, and the transmitted light beam is then coupled to the optical fiber adapter 500 through the transceiver integrated optical port of the second tube shell 402, thereby realizing light transmission; the received light beam transmitted by the optical fiber adapter 500 enters the second tube shell 402 through the transceiver integrated optical port, and the received light beam is then transmitted to the light receiving component through the receiving light port of the second tube shell 402, thereby realizing light reception.

[0151] In some embodiments, the optical transceiver assembly 400 may include only one optical transmitting assembly and one optical receiving assembly, and the second tube shell 402 may include only one incident light port, one integrated transceiver optical port and one receiving light port. An optical transmitting assembly is connected to the second tube shell 402 through the incident light port, an optical receiving assembly is connected to the second tube shell 402 through the receiving light port, and the optical fiber adapter 500 is connected to the second tube shell 402 through the integrated transceiver optical port. In this way, one channel of light transmission and one channel of light reception can be achieved for the optical transceiver assembly 400.

[0152] In some embodiments, the optical transceiver assembly 400 may also include two optical emitting assemblies and two optical receiving assemblies, and the second tube shell 402 includes two incident light ports, two receiving light ports and one transceiver-integrated optical port, that is, the optical transceiver assembly 400 includes a first optical emitting assembly 420, a second optical emitting assembly 430, a first optical receiving assembly 440 and a second optical receiving assembly 450, and the second tube shell 402 includes a first incident light port, a second incident light port, a first receiving light port, a second receiving light port and a transceiver-integrated optical port, the first optical emitting assembly 420 is connected to the second tube shell 402 through the first incident light port, the second optical emitting assembly 430 is connected to the second tube shell 402 through the second incident light port, the first light receiving assembly 440 is connected to the second tube shell 402 through the first receiving light port, the second light receiving assembly 450 is connected to the second tube shell 402 through the second receiving light port, and the optical fiber adapter 500 is connected to the second tube shell 402 through the transceiver-integrated optical port.

[0153] The first incident light port is located on the left side of the second tube housing 402, the second incident light port is located on the upper side of the second tube housing 402, the first receiving light port is located on the upper side of the second tube housing 402, the second receiving light port is located on the lower side of the second tube housing 402, and the transceiver integrated light port is located on the right side of the second tube housing 402. That is, the first incident light port and the transceiver integrated light port are arranged opposite each other, the second incident light port and the first receiving light port are located on the same side of the second tube housing 402, and the first receiving light port and the second receiving light port are arranged opposite each other.

[0154] Since the emission direction of the light beam emitted by the first optical emission component 420 is in the same direction as the light beam receiving direction of the optical fiber adapter 500, that is, the emission direction of the first optical emission component 420 is parallel to the circuit board 300, and the light receiving direction of the optical fiber adapter 500 is also parallel to the circuit board 300, the light beam emitted by the first optical emission component 420 enters the second tube shell 402 through the first incident light port, and the emitted light beam is directly coupled to the optical fiber adapter 500 through the second tube shell 402, thereby realizing the emission of one path of light.

[0155] In some embodiments, a coupling lens is provided at the light output end of the first light emitting component 420 , and the laser beam emitted by the laser in the first light emitting component 420 is converted into a convergent beam via the coupling lens, and the convergent beam is emitted into the second tube shell 402 via the first incident light port.

[0156] In some embodiments, the first light beam emitted by the first light emitting assembly 420 is transmitted along the central axis of the transceiver optical port, so that the first light beam passes through the second tube shell 402 and enters the fiber optic adapter 500. It should be noted that the central axis of the transceiver optical port refers to an axis passing through the center of the transceiver optical port and perpendicular to the surface on which the transceiver optical port is located.

[0157] Because the light beam emitted by the second optical emitting assembly 430 is emitted in a different direction than the light beam received by the optical fiber adapter 500—that is, the emission direction of the second optical emitting assembly 430 is perpendicular to the circuit board 300, while the light receiving direction of the optical fiber adapter 500 is parallel to the circuit board 300—the light beam emitted by the second optical emitting assembly 430 must be reflected by the second housing 402 so that the emission direction of the reflected light beam is aligned with the light receiving direction of the optical fiber adapter 500. In this way, the light beam emitted by the second optical emitting assembly 430 enters the second housing 402 through the second incident light port. The light beam reflected by the second housing 402 is then coupled into the optical fiber adapter 500, achieving another path of light transmission.

[0158] In some embodiments, the second emission light beam emitted by the second optical emission component 430 is reflected by the second tube shell 402, and the reflected second emission light beam is transmitted along the central axis direction of the integrated transceiver optical port, so that the reflected second emission light beam passes through the second tube shell 402 and is emitted into the optical fiber adapter 500.

[0159] In some embodiments, an optical element 401 is disposed in the second tube shell 402, and the optical element 401 is located at the intersection of the emission light path of the first light emitting component 420 and the emission light path of the second light emitting component 430, that is, the optical element 401 is located in the light beam emission direction of the first light emitting component 420 and the second light emitting component 430 at the same time.

[0160] Optical element 401 has the function of transmitting the first emission light beam and reflecting the second emission light beam. The first emission light beam and the reflected second emission light beam can be combined through optical element 401, and the combined light beam is coupled to the fiber optic adapter 500. In this way, the first emission light beam emitted by the first optical transmission component 420 can directly pass through the optical element 401, and the second emission light beam emitted by the second optical transmission component 430 is reflected at the optical element 401. The reflected second emission light beam has the same emission direction as the first emission light beam, so the first emission light beam and the reflected second emission light beam are combined at the optical element 401.

[0161] The optical element 401 has a transmission surface and a reflection surface. The transmission surface is arranged opposite to the first light emitting component 420, so that the first emission light beam emitted by the first light emitting component 420 directly passes through the optical element 401 via the transmission surface; the reflection surface is arranged opposite to the second light emitting component 430, so that the second emission light beam emitted by the second light emitting component 430 is reflected by the reflection surface, and the reflected second emission light beam is transmitted along the emission direction of the first emission light beam, and the reflected second emission light beam and the first emission light beam are combined at the reflection surface.

[0162] In some embodiments, the optical element 401 may be a filter, a prism with a filter or a filter film attached thereto, or other structures, as long as the optical element 401 has the function of transmitting the first emission light beam and reflecting the second emission light beam.

[0163] In some embodiments, the optical element 401 is a filter. The filter is small in size and occupies a small space, which is conducive to the miniaturization design of the optical transceiver component 400.

[0164] In some embodiments, the wavelength of the first emission light beam may be 1270 nm, 1310 nm, 1490 nm, or 1577 nm, etc., and correspondingly, the wavelength of the second emission light beam may also be 1270 nm, 1310 nm, 1490 nm, or 1577 nm, etc.

[0165] In some embodiments, the wavelength of the first emission light beam is 1577 nm, and the wavelength of the second emission light beam is 1490 nm. In this way, the optical element 401 has the function of transmitting 1577 nm and reflecting 1490 nm. The first emission light beam of 1577 nm emitted by the first optical emission component 420 directly passes through the optical element 401, and the second emission light beam of 1490 nm emitted by the second optical emission component 430 is reflected at the optical element 401. The reflected second emission light beam is combined with the first emission light beam and transmitted to the optical fiber adapter 500.

[0166] Because the light beam received by the first optical receiving assembly 440 is in a different direction than the light beam emitted by the optical fiber adapter 500—that is, the light beam received by the first optical receiving assembly 440 is perpendicular to the circuit board 300, while the light beam emitted by the optical fiber adapter 500 is parallel to the circuit board 300—the light beam received by the optical fiber adapter 500 must be reflected by the second housing 402 so that the reflected light beam is emitted in the same direction as the light beam received by the first optical receiving assembly 440. In this way, the external light beam received by the optical fiber adapter 500 enters the second housing 402 through the integrated transceiver port. The light beam reflected by the second housing 402 is then coupled to the first optical receiving assembly 440, achieving single-path light reception.

[0167] Because the receiving direction of the light beam received by the second optical receiving assembly 450 is in a different direction than the emitting direction of the light beam from the optical fiber adapter 500—that is, the receiving direction of the second optical receiving assembly 450 is perpendicular to the circuit board 300, while the emitting direction of the light beam from the optical fiber adapter 500 is parallel to the circuit board 300—the light beam received by the optical fiber adapter 500 must be reflected by the second housing 402 so that the emitting direction of the reflected light beam is aligned with the receiving direction of the second optical receiving assembly 450. In this way, the external light beam received by the optical fiber adapter 500 enters the second housing 402 through the integrated transceiver port. The received light beam, after being reflected by the second housing 402, is then coupled into the second optical receiving assembly 450, achieving reception of another path of light.

[0168] A fourth optical splitter 405, a fifth optical splitter 407, and a sixth optical splitter 408 are disposed in the second tube shell 402. The fourth optical splitter 405 is located in the receiving direction of the received light beam transmitted by the optical fiber adapter 500 and is configured to reflect the first received light beam and the second received light beam transmitted by the optical fiber adapter 500. The fifth optical splitter 407 is disposed corresponding to the second optical receiving component 450 and is configured to transmit the reflected second received light beam and reflect the reflected first received light beam again, and the transmitted second received light beam is incident into the second optical receiving component 450. The sixth optical splitter 408 is disposed corresponding to the first optical receiving component 440 and is configured to transmit the first received light beam reflected by the fifth optical splitter 407, and the transmitted first received light beam is incident into the first optical receiving component 440.

[0169] Figure 21 is a schematic diagram of the structure of another tube housing in an optical module according to some embodiments, Figure 22 is a schematic diagram of the structure of another tube housing in an optical module according to some embodiments from another angle, and Figure 23 is a cross-sectional view of another tube housing in an optical module according to some embodiments. As shown in Figures 21, 22, and 23, the second tube housing 402 includes a first surface 4021, a second surface 4023, a third surface 4027, and a fourth surface 4029. The first surface 4021 and the third surface 4027 are disposed opposite each other, and the second surface 4023 and the fourth surface 4029 are disposed opposite each other. The two ends of the second surface 4023 are connected to the first surface 4021 and the third surface 4027, respectively.

[0170] A first light inlet 4022 is provided on the first surface 4021. The first light inlet 4022 communicates with the inner cavity of the second housing 402. The first light emitting assembly 420 is connected to the second housing 402 via the first surface 4021. Thus, a first light beam emitted by the first light emitting assembly 420 enters the second housing 402 via the first light inlet 4022. In some embodiments, the first light emitting assembly 420 can be fixedly connected to the first surface 4021 via an adjustment sleeve 480.

[0171] A second light inlet 4024 is provided on the second surface 4023 , and the second light inlet 4024 is connected to the inner cavity of the second tube shell 402 . The second light emitting component 430 is connected to the second tube shell 402 through the second light inlet 4024 , so that the second emission light beam emitted by the second light emitting component 430 is emitted into the second tube shell 402 through the second light inlet 4024 .

[0172] A first light outlet 4025 is also provided on the second surface 4023 , and the first light outlet 4025 is connected to the inner cavity of the second tube shell 402 . The first light receiving component 440 is connected to the second tube shell 402 through the first light outlet 4025 , so that the first receiving light beam received by the second tube shell 402 is emitted into the first light receiving component 440 through the first light outlet 4025 .

[0173] In some embodiments, a protruding fixing platform 4026 may be provided on the second surface 4023, and an inclined mounting hole is provided in the fixing platform 4026. The mounting groove is connected to the inner cavity of the second tube shell 402, and the first light receiving component 440 is inserted into the mounting groove, so that the first light receiving component 440 is fixed on the second tube shell 402 at an angle.

[0174] In some embodiments, the fixing platform 4026 and the second tube shell 402 are an integrated structure, and the mounting hole in the fixing platform 4026 is the first light outlet 4025 on the second tube shell 402 .

[0175] A receiving and transmitting light port 4028 is provided on the third surface 4027. The receiving and transmitting light port 4028 communicates with the inner cavity of the second housing 402. The optical fiber adapter 500 is connected to the second housing 402 via the receiving and transmitting light port 4028. Thus, the received light beam transmitted by the optical fiber adapter 500 is emitted into the second housing 402 via the receiving and transmitting light port 4028. In some embodiments, the optical fiber adapter 500 is inserted into the second housing 402 via the receiving and transmitting light port 4028 to achieve a fixed connection between the optical fiber adapter 500 and the second housing 402.

[0176] A second light outlet 4030 is provided on the fourth surface 4029. The second light outlet 4030 communicates with the inner cavity of the second tube housing 402. The second light receiving assembly 450 is connected to the second tube housing 402 via the fourth surface 4029. Thus, the second light beam received by the second tube housing 402 is emitted into the second light receiving assembly 450 via the second light outlet 4030. In some embodiments, the second light receiving assembly 450 can be inserted into the second light outlet 4030, and the outer wall of the second light receiving assembly 450 is bonded and fixed to the inner wall of the second light outlet 4030.

[0177] A first cavity 4037, a second cavity 4033, and a third cavity 4038 are provided in the second tube shell 402. The first light inlet 4022 and the second light inlet 4024 are connected to the first cavity 4037, and the optical element 401 is located in the first cavity 4037. The first cavity 4037 is connected to the third cavity 4038 through the second cavity 4033. The first light outlet 4025, the second light outlet 4030, and the receiving and transmitting light outlet 4028 are connected to the third cavity 4038. The fourth beam splitter 405, the fifth beam splitter 407, and the sixth beam splitter 408 are located in the third cavity 4038.

[0178] Figure 24 is a cross-sectional view from another angle of another tube housing in an optical module according to some embodiments. As shown in Figure 24, a support platform 4031 is disposed within the first cavity 4037. The support platform 4031 is tilted downward from the first light inlet 4022 toward the second cavity 4033. This means that the distance between the support platform 4031 and the second light inlet 4024 gradually increases along the emission direction of the first emitted light beam, forming a first angle between the support platform 4031 and the emission optical axis. In some embodiments, the first angle is 45 degrees.

[0179] The transmissive surface of the optical element 401 is pasted on the support platform 4031, so that there is a first angle between the optical element 401 and the emission light axis. The second receiving light beam emitted by the second light emitting component 430 is reflected on the reflective surface of the optical element 401, and the reflected second emission light beam has the same emission direction as the first emission light beam.

[0180] In some embodiments, to facilitate the transmission of the first emission light beam emitted by the first light emitting assembly 420 through the optical element 401, a light-transmitting hole is provided on the support platform 4031, and the light-transmitting hole is connected to the first cavity 4037. In this way, the first emission light beam emitted by the first light emitting assembly 420 passes through the first cavity 4037, the light-transmitting hole is provided with the optical element 401, and the first emission light beam directly passes through the optical element 401.

[0181] In some embodiments, the light-transmitting hole on the support platform 4031 can be a direct opening or a platform area made of a light-transmitting material, as long as the first emission light beam emitted by the first light-emitting component 420 can pass through the optical element 401 through the light-transmitting hole.

[0182] In some embodiments, when the first emission light beam is transmitted through the optical element 401, most (approximately 95%) of the first emission light beam directly passes through the optical element 401, but a portion (approximately 5%) of the first emission light beam may be reflected at the transmission surface of the optical element 401, and the reflected first emission light beam may be reflected again at the inner wall of the first cavity 4037. The re-reflected first emission light beam may be emitted into the second light emitting component 430 through the second light inlet 4024, causing crosstalk between the reflected light and the second emission light beam.

[0183] To prevent the reflected first emission light beam from causing crosstalk with the second emission light beam, a bevel 4032 is provided on the inner wall of the first cavity 4037. This bevel 4032 is located below the support platform 4031, and the distance between the bevel 4032 and the second light inlet 4024 gradually decreases along the emission direction of the first emission light beam. In this way, after a portion of the first emission light beam is reflected at the transmission surface of the optical element 401, the reflected first emission light beam is reflected again at the bevel 4032. Because the bevel 4032 is tilted, the re-reflected first emission light beam diverges outward, which can reduce the amount of the re-reflected first emission light beam entering the second light inlet 4024, thereby effectively reducing the crosstalk of the reflected light on the second emission light beam.

[0184] In order to reduce the incidence of the first emission light beam reflected by the inclined surface 4032 entering the second light inlet 4024, a second angle is formed between the inclined surface 4032 and the emission optical axis. In some embodiments, the second angle is 20° to 50°.

[0185] The first light beam emitted by the first optical transmission component 420 is transmitted through the optical element 401 and then transmitted to the optical fiber adapter 500. Due to changes in the medium and the reflection of light at the interface between different media, when the first light beam passes through the second cavity 4033 and the third cavity 4038 and is emitted to the optical fiber end face in the optical fiber adapter 500, most of the first light beam directly passes through the optical fiber end face and enters the optical fiber adapter 500, while a small portion of the first light beam is reflected at the optical fiber end face. The reflected first light beam may return to the first optical transmission component 420 along the original path, thereby affecting the transmission performance of the first optical transmission component 420.

[0186] In order to prevent the reflected first emission light beam from returning to the first optical emission component 420 along the original path, an isolator can be provided in the second cavity 4033. The first emission light beam passing through the optical element 401 directly passes through the isolator and enters the optical fiber adapter 500. The isolator can isolate the first emission light beam reflected at the optical fiber end face of the optical fiber adapter 500 to prevent the reflected first emission light beam from returning to the first optical emission component 420, thereby ensuring the emission performance of the first optical emission component 420.

[0187] In some embodiments, the first light beam emitted by the first light emitting component 420 through the coupling lens at the light output end of the first light emitting component 420 is convergent light. The spot of the convergent light at the focus is the smallest. Therefore, the isolator can be set at the focus position of the first light beam. At this time, the required isolator size is minimized, thereby ensuring that the aperture of the second cavity 4033 required by the isolator is minimized, which is conducive to the miniaturization design of the second tube shell 402.

[0188] The third cavity 4038 is provided with a first mounting platform 4034, a second mounting platform 4036 and a third mounting platform 4035. The first mounting platform 4034 is tilted, that is, along the emission direction of the first emission light beam (from left to right), the distance between the first mounting platform 4034 and the light-receiving and light-emitting port 4028 gradually decreases.

[0189] In some embodiments, a light-transmitting hole is provided on the first mounting platform 4034, and the light-transmitting hole is connected to the third cavity 4038, so that the first emission light beam transmitted through the optical element 401 passes through the light-transmitting hole and enters the fiber optic adapter 500, and the second emission light beam reflected by the optical element 401 passes through the light-transmitting hole and enters the fiber optic adapter 500.

[0190] The side of the fourth beam splitter 405 is attached to the first mounting platform 4034, forming a sixth angle between the fourth beam splitter 405 and the transmission optical axis. The fourth beam splitter 405 reflects the first and second received beams transmitted by the fiber optic adapter 500. In some embodiments, the sixth angle is between 40° and 50°.

[0191] In some embodiments, a portion of the fourth optical splitter 405 exposed through the light-transmitting hole is provided with a reflective surface. When the first received light beam and the second received light beam transmitted by the optical fiber adapter 500 are incident on the reflective surface of the fourth optical splitter 405 , the first received light beam and the second received light beam are reflected at the reflective surface of the fourth optical splitter 405 .

[0192] The second mounting platform 4036 is positioned below the first mounting platform 4034 and is tilted. This means that the distance between the second mounting platform 4036 and the second light outlet 4030 gradually decreases along the emission direction of the first emitted light beam (from left to right). A through hole is provided on the second mounting platform 4036, through which the third cavity 4038 communicates with the second light outlet 4030.

[0193] The side of the fifth beam splitter 407 is attached to the second mounting platform 4036, forming a seventh angle between the fifth beam splitter 407 and the emission optical axis. The fifth beam splitter 407 reflects the first received light beam and transmits the second received light beam. It is configured to transmit the second received light beam reflected by the fourth beam splitter 405 and reflect the first received light beam reflected by the fourth beam splitter 405. In some embodiments, the seventh angle is between 6° and 20°.

[0194] In some embodiments, a transmissive reflective surface is provided on the side (lower surface) of the fifth beam splitter 407 facing the second light outlet 4030, and the first receiving light beam and the second receiving light beam reflected by the fourth beam splitter 405 are incident on the fifth beam splitter 407, and the reflected first receiving light beam is reflected again on the transmissive reflective surface; the second receiving light beam reflected by the fourth beam splitter 405 directly passes through the transmissive reflective surface, and the second receiving light beam passing through the fifth beam splitter 407 is incident on the second light receiving component 450 via the second light outlet 4030.

[0195] If a transflective surface is provided on the upper surface of the fifth beam splitter 407, the lower surface of the fifth beam splitter 407 must be attached to the second mounting platform 4036. This means that the fifth beam splitter 407 must be placed within the through-hole of the second mounting platform 4036, which increases the size of the third cavity 4038. However, if a transflective surface is provided on the lower surface of the fifth beam splitter 407, only one through-hole is required to facilitate the reception of the light beam to the fifth beam splitter 407. This effectively reduces the size of the second housing 402 and facilitates a compact design of the second housing 402.

[0196] In some embodiments, in order to facilitate the installation of the fifth spectrometer 407 on the second mounting platform 4036, a fixing member may be further provided in the third cavity 4038. The fixing member is obliquely installed on the second mounting platform 4036, and a light-through hole is provided on the fixing member. The fifth spectrometer 407 is installed on the lower surface of the fixing member. The fifth spectrometer 407 is provided corresponding to the light-through hole, thereby reducing the size of the fifth spectrometer 407.

[0197] In some embodiments, the fixing member may be a disk with a light hole provided at the center thereof. The side of the disk is adhered to the second mounting platform 4036 , and the fifth spectrometer 407 is installed at the center thereof.

[0198] The third mounting platform 4035 is located diagonally above the first mounting platform 4034. The third mounting platform 4035 is tilted, such that the distance between the third mounting platform 4035 and the second light outlet 4030 gradually decreases along the emission direction of the first emitted light beam (from left to right). A light hole is provided on the third mounting platform 4035, through which the third cavity 4038 communicates with the first light outlet 4025.

[0199] The side of the sixth beam splitter 408 is attached to the third mounting platform 4035, forming an eighth angle between the sixth beam splitter 408 and the emission optical axis. The sixth beam splitter 408 transmits the first received light beam and is configured to transmit the first received light beam reflected again by the fifth beam splitter 407. In some embodiments, the eighth angle is between 10° and 22°.

[0200] In some embodiments, a transmissive surface is provided on the side (lower surface) of the sixth beam splitter 408 facing the fifth beam splitter 407, and the first receiving light beam reflected by the fifth beam splitter 407 directly passes through the transmissive surface of the sixth beam splitter 408, and the first receiving light beam passing through the sixth beam splitter 408 is emitted into the first light receiving component 440 through the first light outlet 4025.

[0201] In some embodiments, a mounting groove is defined within the fixing platform 4026, which includes a fourth mounting platform 4039. The fourth mounting platform 4039 is provided with a through-hole communicating with the third mounting platform 4035. The fourth mounting platform 4039 is tilted such that the distance between the fourth mounting platform 4039 and the central axis of the second tube housing 402 gradually decreases along the emission direction of the first emission light beam. In other words, the tilt direction of the fourth mounting platform 4039 is the same as the tilt direction of the third mounting platform 4035.

[0202] The first light receiving component 440 is inserted obliquely into the mounting groove of the fixing platform 4026, and the outer side surface of the tube cap of the first light receiving component 440 contacts the fourth mounting platform 4039. The incident lens of the first light receiving component 440 can be placed in the through hole of the fourth mounting platform 4039. In this way, the first light receiving component 440 is obliquely set on the second tube shell 402 through the mounting groove of the fixing platform 4026.

[0203] An eighth angle can be formed between the fourth mounting platform 4039 and the emission optical axis in the second tube shell 402, that is, the angle between the fourth mounting platform 4039 and the emission optical axis and the angle between the third mounting platform 4035 and the emission optical axis can be the same, and the fourth mounting platform 4039 and the third mounting platform 4035 are arranged parallel to each other.

[0204] In some embodiments, the angle between the fourth mounting platform 4039 and the emission optical axis and the angle between the third mounting platform 4035 and the emission optical axis may be different, with a smaller angle between the fourth mounting platform 4039 and the third mounting platform 4035. In some embodiments, the angle between the fourth mounting platform 4039 and the emission optical axis is 22°.

[0205] In some embodiments, the sixth angle between the fourth beam splitter 405 and the emission optical axis within the second tube housing 402 is 44°, the seventh angle between the fifth beam splitter 407 and the emission optical axis is 9.5°, and the eighth angle between the sixth beam splitter 408 and the emission optical axis is 21°. Thus, the first and second received beams transmitted by the fiber optic adapter 500 are reflected by the fourth beam splitter 405 and then by the fifth beam splitter 407. The reflected second received beam directly passes through the fifth beam splitter 407. The reflected first received beam is then reflected again by the fifth beam splitter 407 and then directly passes through the sixth beam splitter 408.

[0206] In some embodiments, the fourth beam splitter 405, the fifth beam splitter 407, and the sixth beam splitter 408 may be filters, or prisms with filters or filter films attached thereto, or other structures, which are not specifically limited here.

[0207] In some embodiments, the fourth optical splitter 405 , the fifth optical splitter 407 , and the sixth optical splitter 408 are all filters. The filters are small in size and occupy a small space, which is conducive to the miniaturization design of the second tube shell 402 .

[0208] The wavelength of the first received light beam can be 1270nm, 1310nm, 1490nm or 1577nm, etc., which is not specifically limited here; correspondingly, the wavelength of the second received light beam can be 1270nm, 1310nm, 1490nm or 1577nm, etc., which is not specifically limited here.

[0209] In some embodiments, the wavelength of the first received light beam is 1270nm, and the wavelength of the second received light beam is 1310nm. In this way, the fourth spectrometer 405 has the function of reflecting wavelengths of 1270nm and 1310nm, and the fifth spectrometer 407 has the function of transmitting the wavelength of 1310nm and reflecting the wavelength of 1270nm. At the same time, the fifth spectrometer 407 has the function of isolating wavelengths such as 1490nm and 1577nm; the sixth spectrometer 408 has the function of transmitting the wavelength of 1270nm.

[0210] Figure 25 is a schematic diagram of another optical transceiver device in an optical module according to some embodiments. As shown in Figure 25, the optical fiber adapter 500 includes a connecting sleeve, an internal optical fiber 530, an outer sleeve, and an inner sleeve. One end of the connecting sleeve is fixedly connected to the outer sleeve, and the other end of the connecting sleeve is fixedly connected to the third surface 4027 of the second tube shell 402. The inner sleeve is fixed to the side wall of the inner cavity of the outer sleeve, and the internal optical fiber 530 is fixed within the inner cavity of the outer sleeve through the inner sleeve. The connecting sleeve is provided with a mounting hole that communicates with the inner cavity of the outer sleeve. A converging lens 510 is disposed within the mounting hole. The converging lens 510 protrudes from the connecting sleeve and is inserted into the third cavity 4038 through the light-receiving and light-receiving port 4028. In this manner, the first and second received light beams transmitted by the internal optical fiber 530 in the optical fiber adapter 500 are converted into collimated light beams by the converging lens 510. The collimated light beams are then emitted through the third cavity 4038 to the fourth beam splitter 405.

[0211] An assembly hole is also provided in the third cavity 4038, in which a first lens 403 is provided. The first lens 403 is located between the isolator 600 and the fourth beam splitter 405. The first lens 403 is a collimating lens, which is configured to convert the first emission light beam passing through the optical element 401 and the second emission light beam reflected at the optical element 401 into parallel light beams respectively. The parallel light beams directly pass through the fourth beam splitter 405 and are incident into the converging lens 510. The parallel light beams are converted into convergent light beams via the converging lens 510, and the convergent light beams converge into the internal optical fiber 530.

[0212] When assembling the optical transceiver assembly 400, first insert the first lens 403 into the assembly hole in the third cavity 4038, then directly bond the fourth optical splitter 405 to the first mounting platform 4034 by passive bonding, directly bond the fixing member 406 to the second mounting platform 4036 by passive bonding, fix the fifth optical splitter 407 to the fixing member 406, and directly bond the sixth optical splitter 408 to the third mounting platform 4035 by passive bonding; then, insert the optical fiber adapter 500 equipped with the converging lens 510 into the third cavity 4038 through the transceiver optical port 4028, so that the first lens 403 is actively coupled with the converging lens 510.

[0213] In some embodiments, the first lens 403 is directly placed in the assembly hole in the third cavity 4038. The converging lens 510 is inserted into the third cavity 4038 along with the fiber optic adapter 500. The first lens 403 and the converging lens 510 are actively coupled. In this way, the first lens 403 has low requirements on the position and precision of the first lens 403 in the third cavity 4038, which facilitates the assembly of the first lens 403.

[0214] After the optical element 401, isolator 600, first lens 403, fourth beam splitter 405, fifth beam splitter 407, and sixth beam splitter 408 are assembled within the second housing 402, the first optical emitting assembly 420 is laser welded to the first surface 4021 of the second housing 402 via an adjusting sleeve, so that the first emission light beam emitted by the first optical emitting assembly 420 enters the first cavity 4037 through the first light inlet 4022. The second optical emitting assembly 430 is then inserted into the second housing 402 through the second light inlet 4024. The first optical receiving assembly 440 is then connected to the second housing 402 via the fixing platform 4026 and fixedly connected to the second housing 402 using adhesive. The second optical receiving assembly 450 is then inserted into the second housing 402 through the second light outlet 4030 and fixedly connected to the second housing 402 using adhesive. Thus, the assembly of the optical transceiver assembly 400 is completed.

[0215] After the assembly of the optical transceiver assembly 400 is completed, the first transmission light beam emitted by the first optical transmission assembly 420 passes through the optical element 401 and the isolator 600 in sequence. The first transmission light beam passing through the isolator 600 is converted into a parallel light beam by the first lens 403. The parallel light beam passes through the fourth beam splitter 405 and is emitted into the internal optical fiber 530 of the optical fiber adapter 500 through the converging lens 510, thereby realizing the emission of the first transmission light beam.

[0216] The second emission light beam emitted by the second optical emission component 430 is reflected by the optical element 401, and the reflected second emission light beam passes through the isolator 600. The second emission light beam passing through the isolator 600 is converted into a parallel light beam via the first lens 403. The parallel light beam passes through the fourth beam splitter 405 and is emitted into the internal optical fiber 530 of the optical fiber adapter 500 via the converging lens 510, thereby realizing the emission of the second emission light beam.

[0217] In some embodiments, the first emission light beam and the second emission light beam can be combined at the optical element 401, that is, the second emission light beam is reflected at the optical element 401, and the reflected second emission light beam is combined with the first emission light beam that passes through the optical element 401. The combined light passes through the isolator 600, and the combined light that passes through the isolator 600 is converted into a parallel light beam via the first lens 403. The parallel light beam passes through the fourth beam splitter 405 and is emitted into the internal optical fiber 530 of the optical fiber adapter 500 via the converging lens 510, thereby realizing the emission of the first emission light beam and the second emission light beam at the same time.

[0218] The first receiving light beam and the second receiving light beam transmitted through the optical fiber adapter 500 are converted into the first receiving parallel light and the second receiving parallel light via the converging lens 510. The first receiving parallel light and the second receiving parallel light are reflected to the fifth receiving parallel light via the fourth optical splitter 405. The reflected second receiving parallel light directly passes through the fifth optical splitter 407 and is incident into the second optical receiving component 450, thereby realizing the reception of the second receiving light beam.

[0219] The first received parallel light reflected by the fourth beam splitter 405 is reflected again at the fifth beam splitter 407 , and the re-reflected first received light beam directly passes through the sixth beam splitter 408 and enters the first light receiving component 440 , thereby receiving the first received light beam.

[0220] In some embodiments, the first received light beam and the second received light beam transmitted by the optical fiber adapter 500 may be separate lights of different wavelengths, or may be combined light including the first received light beam and the second received light beam.

[0221] In some embodiments, the first received light beam transmitted by the fiber optic adapter 500 is light having a wavelength of 1270±10 nm, and the second received light beam is light having a wavelength of 1310±20 nm. This means that the first received light beam can be light having a wavelength of 1280 nm, and the second received light beam can be light having a wavelength of 1290 nm. In this manner, the wavelengths of the first and second received light beams are relatively close to each other. The optical splitting function of the fourth optical splitter 405, the fifth optical splitter 407, and the sixth optical splitter 408 provided herein can separate the first and second received light beams having a relatively close wavelength difference, thereby achieving dense wavelength splitting.

[0222] In this disclosure, a three-lens optical path system (a coupling lens within the first optical transmitter assembly 420, a first lens 403 within the second tube shell 402, and a converging lens 510 within the optical fiber adapter 500) and an optical path design that converts converged light into parallel light improve the coupling efficiency of the optical transceiver assembly 400. The innovative optical splitting design enables dense wavelength splitting within 6nm, which, compared to other industry solutions, better meets the wavelength splitting requirements of the Componon product protocol at a lower cost. This unique optical path design enables the use of the best filters and minimizes insertion loss, achieving two-way transmission and two-way reception.

[0223] In some embodiments, when the first optical receiving component 440 receives the first receiving light beam transmitted by the tube shell and the second optical receiving component 450 receives the second receiving light beam transmitted by the tube shell, the optical receiving components have receiving return loss and responsiveness indicators when receiving light, and the receiving return loss and responsiveness indicators balance each other.

[0224] Figure 26 is a schematic diagram of the structure of a light receiving assembly in an optical module according to some embodiments. As shown in Figure 26, taking the second light receiving assembly 450 as an example, the second light receiving assembly 450 includes a TO socket, a carrier 4501, and a PD chip 4502. The carrier 4501 is mounted on the TO socket. The end of the carrier 4501 facing away from the TO socket is provided with a bevel. This bevel slopes downward from left to right, i.e., the distance between this bevel and the central axis of the housing gradually increases along the direction of light emission within the housing. In some embodiments, the angle between the bevel and the emission axis is 12°.

[0225] PD chip 4502 is mounted on the inclined surface of carrier 4501, allowing it to be fixed at an angle to the TO socket. This allows the second received light beam to pass through the beam splitter and reach PD chip 4502. The design of PD chip 4502 and the receiving optical path is non-orthogonal, and some of the received light is reflected by PD chip 4502. However, this reflected light does not affect the received light reaching PD chip 4502. This significantly improves the receive return loss indicator while minimizing the impact on the receive responsivity indicator, achieving compatibility between the receive return loss and responsivity indicators.

[0226] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

[0227] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An optical module, comprising: circuit boards; an optical transceiver assembly, electrically connected to the circuit board; An optical fiber adapter connected to the optical transceiver assembly; Wherein, the optical transceiver assembly includes: A first housing includes an inner cavity and an incident light port, an exit light port, and a transceiver optical port in communication with the inner cavity, wherein the optical fiber adapter is inserted into the inner cavity through the transceiver optical port; an optical element and an inclined surface are disposed within the inner cavity, wherein the optical element is configured to transmit and / or reflect light incident on the first housing; the inclined surface is located below the optical element and is disposed opposite to a transmissive surface on the optical element, and is configured to re-reflect light reflected by the transmissive surface so that the re-reflected light does not pass through the inner cavity. A light splitting assembly is disposed in the inner cavity, comprising a support frame and a first light splitter, a second light splitter, and a third light splitter disposed on the support frame. A collimating lens is disposed in the support frame, and a converging lens at the end of the optical fiber adapter is inserted into the support frame. The first light splitter, the second light splitter, and the third light splitter are configured to reflect and split received light of different wavelengths transmitted by the optical fiber adapter. a light emitting assembly connected to the first housing via the incident light port, and configured to generate emitted light, wherein the emitted light is sequentially coupled to the fiber optic adapter via the optical element, the collimating lens, the first beam splitter, and the converging lens; a bracket inserted into the light exit port, comprising a mounting slot, one end of the mounting slot being provided with an opening, and the other end of the mounting slot being provided with an inclined mounting surface, the mounting surface being in communication with the light exit port; wherein a distance between the mounting surface and a central axis of the first tube shell gradually decreases along a light emission direction within the first tube shell; The light receiving component is disposed on the mounting surface and is configured to receive the light reflected by the light splitting component.

2. The optical module according to claim 1, wherein: The incident light port includes a first incident light port and a second incident light port, the first incident light port and the second incident light port are both connected to the inner cavity, and the first incident light port and the second incident light port are located on different sides of the first tube shell; The light emitting assembly includes a first light emitting assembly and a second light emitting assembly, wherein the first light emitting assembly is connected to the first tube shell through the first incident light port and is configured to generate a first emitted light; The second light emitting assembly is connected to the first tube shell through the second incident light port and is configured to generate a second emitted light; The optical element is located at the intersection of the emission path of the first emission light and the emission path of the second emission light. The transmission surface of the optical element is arranged opposite to the first light emitting component. The transmission surface is configured to transmit part of the first emission light and reflect part of the first emission light. The inclined surface is configured to reflect the reflected first emission light again. The reflection surface of the optical element is arranged opposite to the second light emitting component. The transmission surface and the reflection surface are opposite sides of the optical element.

3. The optical module according to claim 1, wherein: The angle between the inclined surface and the light emission direction in the first tube shell is 20° to 50°.

4. The optical module according to claim 1, wherein: An isolator is provided in the inner cavity and is located at the focus of the first emitted light.

5. The optical module according to claim 1, wherein: The light exit port includes a first light exit port and a second light exit port, the first light exit port and the second light exit port are both connected to the inner cavity, the first light exit port and the second light exit port are located on different sides of the first tube shell, and the bracket is inserted into the first light exit port; The light receiving component includes a first light receiving component and a second light receiving component, wherein the first light receiving component is arranged on an inclined mounting surface in the bracket and is configured to receive the first received light reflected by the light splitting component; The second light receiving component is connected to the first tube shell through the second light output port, and is configured to receive the second received light reflected by the light splitting component.

6. The optical module according to claim 5, wherein: A through-light hole is provided in the support frame, and the support frame includes a first connecting portion, a supporting portion, and a second connecting portion, wherein the first connecting portion is connected to the second connecting portion through the supporting portion; The support frame is provided with a first supporting surface, a second supporting surface, a second limiting surface and a third supporting surface, a third angle is formed between the first supporting surface and the light emission direction in the first tube shell, and the first optical splitter is provided on the first supporting surface; The second supporting surface faces the first light exit port, and a fourth angle is formed between the second supporting surface and the light emission direction in the first tube shell. The third beam splitter is disposed on the second supporting surface, with one end of the third beam splitter abutting against the second limiting surface and the other end abutting against the first connecting portion. The third supporting surface is located on the outer side of the supporting portion facing the second light exit, and a fifth angle is formed between the third supporting surface and the light emission direction in the first tube shell. The second beam splitter is disposed on the third supporting surface.

7. The optical module according to claim 6, wherein: A transmissive reflective surface is provided on the side of the second beam splitter facing the second light exit, and the transmissive reflective surface is configured to reflect the first received light reflected by the first beam splitter again and transmit the second received light beam reflected by the first beam splitter.

8. The optical module according to claim 6, wherein: The third angle between the first beam splitter and the light emission direction is 40° to 50°, the fourth angle between the second beam splitter and the light emission direction is 6° to 20°, and the fifth angle between the third beam splitter and the light emission direction is 10° to 22°.

9. The optical module according to claim 8, wherein: The angle between the mounting surface and the light emission direction and the fifth angle are the same.

10. The optical module according to claim 6, wherein: The collimating lens is arranged in the light-through hole in the first connecting portion, and the converging lens is inserted into the light-through hole in the second connecting portion. The collimating lens and the converging lens are passively coupled to each other.

11. An optical module, comprising: circuit boards; an optical transceiver assembly, electrically connected to the circuit board; An optical fiber adapter connected to the optical transceiver assembly; Wherein, the optical transceiver assembly includes: The second tube shell includes an inner cavity and a light inlet, a light outlet, and a light receiving and transmitting port communicating with the inner cavity, the optical fiber adapter being inserted into the inner cavity through the light receiving and transmitting port; an optical element and an inclined surface are provided in the inner cavity, the optical element being configured to transmit and / or reflect the emitted light entering the second tube shell; the inclined surface is located below the optical element and is arranged opposite to the transmission surface of the optical element, and is configured to re-reflect the light reflected by the transmission surface so that the re-reflected emitted light does not pass through the light inlet; a protruding fixing platform is provided on the fixing platform, the fixing platform having a mounting groove provided therein, one end of the mounting groove being provided with an opening, and the other end of the mounting groove being provided with an inclined mounting platform, the mounting platform being connected to the light outlet; the distance between the mounting platform and the central axis of the second tube shell gradually decreases along the direction of light emission from the second tube shell; A plurality of optical splitters are arranged in the inner cavity, corresponding to the light receiving and light output ports, and configured to reflect and split the received light of different wavelengths transmitted by the optical fiber adapter; an optical emission assembly connected to the second tube shell through the light inlet and configured to generate emission light, wherein the emission light is sequentially coupled to the optical fiber adapter via the optical element and the optical splitter; The light receiving component is disposed on the mounting platform, has a preset angle with the second tube shell, and is configured to receive the received light reflected by the beam splitter.

12. The optical module according to claim 11, wherein: The light entrance includes a first light entrance and a second light entrance, the first light entrance and the second light entrance are both connected to the inner cavity, and the first light entrance and the second light entrance are located on different sides of the second tube shell; The light emitting assembly includes a first light emitting assembly and a second light emitting assembly, wherein the first light emitting assembly is connected to the second tube shell through the first light inlet and is configured to generate a first emitted light; The second light emitting assembly is connected to the second tube shell through the second light entrance and is configured to generate a second emitted light; The optical element is located at the intersection of the emission paths of the first emitted light and the second emitted light, the transmission surface of the optical element is arranged opposite to the first light emitting component, the transmission surface is configured to transmit part of the first emitted light and reflect part of the first emitted light, and the inclined surface is configured to reflect the reflected first emitted light again; the reflection surface of the optical element is arranged opposite to the second light emitting component, and the transmission surface and the reflection surface are opposite sides of the optical element.

13. The optical module according to claim 11, wherein: The angle between the inclined surface and the light emission direction in the second tube shell is 20° to 50°.

14. The optical module according to claim 12, wherein: An isolator is provided in the inner cavity and is located at the focus of the first emitted light.

15. The optical module according to claim 11, wherein: The light outlet comprises a first light outlet and a second light outlet, the first light outlet and the second light outlet are both connected to the inner cavity, and the first light outlet and the second light outlet are located on different sides of the second tube shell; The light receiving assembly includes a first light receiving assembly and a second light receiving assembly, wherein the first light receiving assembly is disposed on an inclined mounting platform and is configured to receive the first received light reflected by the beam splitter; The second light receiving component is connected to the second tube shell through the second light outlet, and is configured to receive the second received light reflected by the optical splitter.

16. The optical module according to claim 15, wherein: The optical splitter includes a fourth optical splitter, a fifth optical splitter, and a sixth optical splitter. A first mounting platform, a second mounting platform, and a third mounting platform are provided in the inner cavity. The first mounting platform faces the light-receiving and light-emitting port. A sixth angle is formed between the first mounting platform and the light emission direction in the second tube shell. The fourth optical splitter is provided on the first mounting platform. The second mounting platform faces the second light outlet, a seventh angle is formed between the second mounting platform and the light emission direction, and the fifth beam splitter is disposed on the second mounting platform; The third mounting platform faces the first light outlet, an eighth angle is formed between the third mounting platform and the light emission direction, and the sixth optical splitter is disposed on the third mounting platform.

17. The optical module according to claim 16, wherein: The optical transceiver assembly further includes a fixing member, which is disposed on the second mounting platform, and the fifth optical splitter is disposed on the fixing member.

18. The optical module according to claim 17, wherein: A transmissive reflective surface is provided on a side surface of the fifth beam splitter facing the second light outlet, and the transmissive reflective surface is configured to reflect the first received light reflected by the fourth beam splitter again and transmit the reflected second received light.

19. The optical module according to claim 16, wherein: The sixth angle between the fourth beam splitter and the light emission direction is 40° to 50°, the seventh angle between the fifth beam splitter and the light emission direction is 6° to 20°, and the eighth angle between the sixth beam splitter and the light emission direction is 10° to 22°.

20. The optical module according to claim 11, wherein A converging lens is provided at one end of the optical fiber adapter, and the converging lens is inserted into the inner cavity; An assembly hole is provided in the inner cavity, a first lens is provided in the assembly hole, the first lens and the converging lens are provided on both sides of the beam splitter, and the first lens and the converging lens are actively coupled to each other.

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