Optical module

Abstract

The utility model provides an optical module, a light emitting component comprises a bearing plate, a first laser, a first lens, a first optical fiber ferrule and a first isolator, the first lens is located in the light emitting direction of the first laser, and the first optical fiber ferrule is located in the convergence direction of the first lens. The first isolator is located between the first lens and the first optical fiber ferrule. The bearing plate comprises a first bearing surface, a second bearing surface and a first bearing groove, the first bearing surface bears the first laser, the second bearing surface is located between the first bearing surface and the first bearing groove, the second bearing surface bears the first lens and the first isolator, and the inner wall of the first bearing groove is connected with the outer wall of the first optical fiber ferrule; the inner wall of the first bearing groove and the outer wall of the first optical fiber ferrule are complementary in shape, so that the contact area between the inner wall of the first bearing groove and the outer wall of the first optical fiber ferrule can be increased, local stress concentration is reduced, and the connection stability of the first bearing groove and the first optical fiber ferrule is improved.

Description

Technical Field

[0001] This disclosure relates to the field of optical fiber communication technology, and in particular to an optical module. Background Technology

[0002] With the development of new business and application models 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 the tools for converting between photoelectric signals and signals, and are one of the key components in optical communication equipment. Furthermore, with the evolving needs of optical communication technology, the transmission rate of optical modules is constantly increasing. Utility Model Content

[0003] This disclosure provides an optical module that improves the connection stability between the first carrier slot and the first optical fiber ferrule.

[0004] In some embodiments, an optical module is provided, comprising:

[0005] Circuit board;

[0006] A light-emitting component, connected to the circuit board, is used to emit light signals;

[0007] The light emitting component includes:

[0008] The first laser is used to emit optical signals;

[0009] The first lens, located in the light-emitting direction of the first laser, is used to focus the optical signal;

[0010] The first fiber optic ferrule, located in the converging direction of the first lens, is used to receive the optical signal;

[0011] The first isolator is located between the first lens and the first optical fiber ferrule;

[0012] The support plate includes:

[0013] The first bearing surface supports the first laser.

[0014] The second bearing surface supports the first lens and the first isolator;

[0015] The inner wall of the first support groove is connected to the outer wall of the first optical fiber ferrule to support the first optical fiber ferrule; the inner wall of the first support groove and the outer wall of the first optical fiber ferrule have complementary shapes.

[0016] The above technical solution has the following beneficial effects: This disclosure provides an optical module, including a circuit board and an optical emitting component. The optical emitting component is connected to the circuit board and is used to emit optical signals. The optical emitting component includes a carrier plate and optoelectronic devices. The carrier plate is used to support the optoelectronic devices of the optical emitting component. The optoelectronic devices include a first laser, a first lens, a first fiber optic ferrule, and a first isolator. The first laser is used to emit optical signals, and the first lens is used to converge the optical signals. The first lens is located in the light-emitting direction of the first laser so that the first lens can converge the optical signals emitted by the first laser. The first fiber optic ferrule is used to receive optical signals. The first fiber optic ferrule is located in the convergence direction of the first lens so that the first fiber optic ferrule can receive the optical signals converged by the first lens. The first isolator is located between the first lens and the first fiber optic ferrule to prevent the optical signals from returning along the original path. The carrier plate includes a first carrier surface, a second carrier surface, and a first carrier groove. The first carrier surface supports the first laser, the second carrier surface supports the first lens and the first isolator, and the inner wall of the first carrier groove is connected to the outer wall of the first fiber optic ferrule to support the first fiber optic ferrule. Adhesive is filled between the inner wall of the first carrier groove and the outer wall of the first fiber optic ferrule. After the adhesive solidifies, it forms an adhesive layer, thereby connecting the first carrier groove and the first fiber optic ferrule. The inner wall of the first carrier groove and the outer wall of the first fiber optic ferrule have complementary shapes, which can increase the contact area between the inner wall of the first carrier groove and the outer wall of the first fiber optic ferrule, reduce local stress concentration, and improve the connection stability between the first carrier groove and the first fiber optic ferrule.

[0017] In some embodiments, an optical module is provided in which the cross-section of the first optical fiber ferrule is circular and the cross-section of the first carrier groove is semi-circular, wherein the radius of the semi-circle is greater than or equal to the radius of the circle.

[0018] The above technical solution has the following beneficial effects: the cross-section of the first optical fiber ferrule is circular, the cross-section of the first carrier groove is semi-circular, the gaps between the inner wall of the first carrier groove and the outer wall of the first optical fiber ferrule are equal at all points, and the adhesive layer thickness between the first carrier groove and the first optical fiber ferrule is the same at all points, reducing local stress concentration and thus improving the connection stability between the first carrier groove and the first optical fiber ferrule. The radius of the semi-circle is greater than or equal to the radius of the circle so that the first carrier groove can accommodate the first optical fiber ferrule.

[0019] In some embodiments, an optical module is provided, wherein the cross-section of the first optical fiber ferrule is square, the cross-section of the first carrier groove is U-shaped, and the spacing of the U-shape is greater than or equal to the side length of the square.

[0020] The above technical solution has the following beneficial effects: the cross-section of the first optical fiber ferrule is square, and the cross-section of the first carrier groove is U-shaped, which can eliminate geometric abrupt changes, reduce local stress concentration, and improve the connection stability between the first carrier groove and the first optical fiber ferrule. The spacing of the U-shape is greater than or equal to the side length of the square, so that the first carrier groove can accommodate the first optical fiber ferrule.

[0021] In some embodiments, an optical module is provided, wherein the carrier board includes:

[0022] The supporting part is provided with the first supporting groove;

[0023] The optical module also includes:

[0024] The protective cover, with its bottom connected to the supporting part, includes:

[0025] roof;

[0026] The first side plate is connected to the top plate at the top and to the supporting part at the bottom;

[0027] The first side plate has a first clearance notch, which is corresponding to the first bearing groove and is used to avoid the first optical fiber ferrule.

[0028] The above technical solution has the following beneficial effects: The carrier plate includes a carrier portion, which is provided with a first carrier groove. The first carrier groove carries a first optical fiber ferrule, so that the carrier plate can carry the first optical fiber ferrule. The optical module also includes a protective cover, the bottom of which is connected to the carrier portion, so that the protective cover is connected to the carrier plate. The protective cover includes a top plate and a first side plate. The top of the first side plate is connected to the top plate, and the bottom of the first side plate is connected to the carrier portion, so that the protective cover forms a cavity. The photoelectric device of the light emitting component can be placed in the cavity to protect the photoelectric device of the light emitting component. The first side plate has a first clearance notch, which is correspondingly provided with the first carrier groove. The first clearance notch is used to avoid the first optical fiber ferrule to protect the first optical fiber ferrule.

[0029] In some embodiments, an optical module is provided in which the first clearance notch is complementary to the outer wall shape of the first optical fiber ferrule.

[0030] The above technical solution has the following beneficial effects: the shape of the first clearance notch is complementary to the outer wall shape of the first optical fiber ferrule, which can increase the area of ​​the protective cover and improve the strength of the protective cover.

[0031] In some embodiments, an optical module is provided, wherein the second carrier surface is provided with:

[0032] A first substrate is provided with the first isolator, such that the central axis of the first isolator is at the same height as the central axis of the first lens.

[0033] The above technical solution has the following beneficial effects: a first substrate is provided on the second bearing surface, and a first isolator is provided on the first substrate so that the central axis of the first isolator is aligned with the central axis of the first lens, thereby allowing the optical signal converged by the first lens to be incident on the first optical fiber ferrule through the first isolator, but not to return to the first lens through the first isolator.

[0034] In some embodiments, an optical module is provided, further comprising:

[0035] The second lens, located between the first laser and the first lens, and in the light-emitting direction of the first laser, is used to collimate the optical signal.

[0036] The above technical solution has the following beneficial effects: the optical module also includes a second lens, which is used to collimate the optical signal. The second lens is located between the first laser and the first lens, and is located in the light output direction of the first laser to receive the optical signal emitted by the first laser and collimate the optical signal.

[0037] In some embodiments, an optical module is provided, wherein the carrier plate further includes:

[0038] The third bearing surface is located between the first bearing surface and the second bearing surface, and protrudes relative to the second bearing surface;

[0039] The first limiting part protrudes relative to the third bearing surface;

[0040] The light emitting component also includes:

[0041] The first optical multiplexer is located between the second lens and the first lens, in the collimation direction of the second lens, with its bottom connected to the third bearing surface and its side connected to the first limiting part.

[0042] The above technical solution has the following beneficial effects: The light emitting component further includes a first optical multiplexer, which is located between the second lens and the first lens. The first optical multiplexer is positioned in the collimation direction of the second lens to combine the light signals collimated by the second lens. The carrier plate further includes a third carrier surface, which is located between the first carrier surface and the second carrier surface, so that the bottom of the first optical multiplexer can be connected to the third carrier surface, thereby defining the position of the first optical multiplexer in the height direction of the carrier plate. The third carrier surface protrudes relative to the second carrier surface, so that the central axis of the first optical multiplexer is flush with the central axis of the first lens. The carrier plate further includes a first limiting part, which protrudes relative to the third carrier surface, so that the side of the first optical multiplexer can be connected to the first limiting part, thereby defining the position of the first optical multiplexer in the width direction of the carrier plate.

[0043] In some embodiments, an optical module is provided, wherein there is a gap between the first limiting portion and the third bearing surface.

[0044] The above technical solution has the following beneficial effects: there is a gap between the first limiting part and the third bearing surface, which can increase the contact area between the side of the first optical multiplexer and the first limiting part, so that the side of the first optical multiplexer can be tightly connected with the first limiting part, and reduce the patching error of the first optical multiplexer.

[0045] In some embodiments, an optical module is provided, wherein the carrier board includes:

[0046] The fourth bearing surface is located on one side of the second bearing surface and is recessed relative to the second bearing surface;

[0047] The circuit board has:

[0048] An embedding port is used for embedding the support plate; the lower surface of one side wall of the embedding port is connected to the fourth support surface.

[0049] The above technical solution has the following beneficial effects: The circuit board has an insertion slot for embedding a carrier plate. The carrier plate includes a fourth bearing surface, which is located on one side of the second bearing surface. The fourth bearing surface is connected to the lower surface of one side wall of the insertion slot to support the circuit board. The fourth bearing surface is recessed relative to the second bearing surface. The side surface of one side wall of the insertion slot is connected to the connecting surface between the second bearing surface and the fourth bearing surface to increase the contact area between the circuit board and the carrier plate and improve the connection stability between the circuit board and the carrier plate. Attached Figure Description

[0050] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a partial structural diagram of an optical communication system according to some embodiments;

[0052] Figure 2 This is a partial structural diagram of a host computer according to some embodiments;

[0053] Figure 3 This is a structural diagram of an optical module according to some embodiments;

[0054] Figure 4 An exploded view of an optical module according to some embodiments;

[0055] Figure 5 This is an internal structural diagram of an optical module according to some embodiments;

[0056] Figure 6 This is an exploded view of the internal structure of an optical module according to some embodiments;

[0057] Figure 7 This is an exploded view of a light emitting component provided according to some embodiments;

[0058] Figure 8 This is an exploded view of another light-emitting component provided according to some embodiments;

[0059] Figure 9 This is a partial view of a light emitting component provided according to some embodiments;

[0060] Figure 10 This is a structural diagram of a protective cover provided according to some embodiments;

[0061] Figure 11 A cross-sectional view of the internal structure of an optical module according to some embodiments. Figure 1 ;

[0062] Figure 12 A cross-sectional view of the internal structure of an optical module according to some embodiments. Figure 2 . Detailed Implementation

[0063] The embodiments of this disclosure will now be described clearly and in detail with reference to the accompanying drawings. However, the described embodiments are merely some, and not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0064] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open and inclusive, meaning "including, but not limited to"; the terms "first" and "second" should not be construed as indicating or implying relative importance or indicating an upper limit on the number; the term "multiple" means two or more; the term "connection" should be interpreted broadly, for example, "connection" can be a fixed connection, a detachable connection, or an integral part, and can be a direct connection or an indirect connection through an intermediate medium; the use of the terms "applicable to" or "configured to" implies open and inclusive language, which does not exclude applicability to or configuration to devices performing additional tasks or steps; descriptions such as "parallel," "perpendicular," "identical," "consistent," and "aligned" are not limited to absolute mathematical theoretical relationships, but also include acceptable error ranges arising in practice, and differences based on the same design concept but due to manufacturing reasons.

[0065] In optical communication technology, to establish information transmission between information processing devices, information is loaded onto light, and the speed of light propagation is used to transmit the information. This light carrying information is called an optical signal. When optical signals are transmitted in optical information transmission equipment, optical power loss can be reduced, enabling long-distance transmission of optical signals. At the same time, the cost of optical information transmission equipment such as optical fibers is lower than that of electrical information transmission equipment such as copper wires. Therefore, optical communication technology can achieve high-speed, long-distance, and low-cost information transmission.

[0066] Information processing equipment typically includes optical network units (ONUs), gateways, routers, switches, mobile phones, computers, servers, tablets, televisions, etc., while optical information transmission equipment typically includes optical fibers and optical waveguides. Information processing equipment can only recognize and process electrical signals, while optical communication technology uses optical signals for transmission, requiring optical modules to convert between optical and electrical signals.

[0067] An optical module enables the conversion between optical signals and electrical signals between information processing equipment and optical information transmission equipment. In some embodiments, at least one of the optical signal input or output terminals of the optical module is connected to an optical fiber, and at least one of the electrical signal input or output terminals of the optical module is connected to an optical network terminal. A first optical signal from the optical fiber is transmitted to the optical module, which converts the first optical signal into a first electrical signal and transmits the first electrical signal to the optical network terminal. A second electrical signal from the optical network terminal is transmitted to the optical module, which converts the second electrical signal into a second optical signal and transmits the second optical signal to the optical fiber.

[0068] Since multiple information processing devices can transmit information via electrical signals, at least one of these devices needs to be directly connected to the optical module, rather than all of them. Here, the information processing device directly connected to the optical module is also referred to as the host computer of the optical module. Furthermore, the optical signal input or output terminal of the optical module is called the optical port, and the electrical signal input or output terminal is called the electrical port.

[0069] Figure 1 This is a partial structural diagram of an optical communication system according to some embodiments. Figure 1 As shown, the optical communication system mainly includes a remote information processing device 1000, a local information processing device 2000, a host computer 100 for optical modules, an optical module 200, an optical fiber 101, and a network cable 103. Among them, the optical fiber 101 is an optical information transmission device, and the network cable 103 is an electrical information transmission device.

[0070] In some embodiments, one end of the optical fiber 101 extends toward the remote information processing device 1000, and the other end of the optical fiber 101 is connected to the optical module 200 through the optical port of the optical module 200. The optical signal can undergo total internal reflection in the optical fiber 101, and the propagation of the optical signal in the direction of total internal reflection can almost maintain the original optical power. The optical signal undergoes multiple total internal reflections in the optical fiber 101 to transmit the optical signal from the remote information processing device 1000 to the optical module 200, or to transmit the optical signal from the optical module 200 to the remote information processing device 1000, thereby realizing long-distance information transmission based on low power loss.

[0071] The optical communication system includes one or more optical fibers 101. In some embodiments, the optical fiber 101 is detachably connected to the optical module 200; in some embodiments, the optical fiber 101 is non-detachably connected to the optical module 200.

[0072] The host computer 100 is configured to provide data signals to the optical module 200, or receive data signals from the optical module 200, or monitor or control the working status of the optical module 200.

[0073] The host computer 100 includes a housing for accommodating the optical module 200, and an optical module interface 102 disposed on the housing. The optical module 200 is inserted into the housing through the optical module interface 102 to establish a unidirectional or bidirectional electrical signal connection between the host computer 100 and the optical module 200.

[0074] The host computer 100 also includes an external power interface that can connect to an electrical signal network. In some embodiments, the external power interface includes a Universal Serial Bus (USB) interface or a network cable interface 104. The network cable interface 104 is configured to connect a network cable 103 to establish a unidirectional or bidirectional electrical signal connection between the host computer 100 and the network cable 103.

[0075] One end of the network cable 103 is connected to the local information processing device 2000, and the other end is connected to the host computer 100, so as to establish an electrical signal connection between the local information processing device 2000 and the host computer 100 through the network cable 103. In some embodiments, a third electrical signal emitted by the local information processing device 2000 is transmitted to the host computer 100 through the network cable 103. The host computer 100 generates a second electrical signal based on the third electrical signal. The second electrical signal from the host computer 100 is transmitted to the optical module 200. The optical module 200 converts the second electrical signal into a second optical signal and transmits the second optical signal to the optical fiber 101. The second optical signal is transmitted in the optical fiber 101 to the remote information processing device 1000.

[0076] In some embodiments, a first optical signal from a remote information processing device 1000 is transmitted through an optical fiber 101, and the first optical signal from the optical fiber 101 is transmitted to an optical module 200. The optical module 200 converts the first optical signal into a first electrical signal, and transmits the first electrical signal to a host computer 100. The host computer 100 generates a fourth electrical signal based on the first electrical signal and transmits the fourth electrical signal to a local information processing device 2000.

[0077] In some embodiments, the optical module is a tool for converting optical signals to electrical signals. During the conversion process, the information does not change, but the encoding or decoding method of the information changes.

[0078] In addition to optical network terminals, the host computer 100 also includes optical line terminals (OLTs), optical network equipment (ONTs), or data center servers.

[0079] Figure 2 This is a partial structural diagram of a host computer according to some embodiments. To clearly show the connection relationship between the optical module 200 and the host computer 100, Figure 2 Only the structure of the host computer 100 related to the optical module 200 is shown. For example... Figure 2As shown, in some embodiments, the host computer 100 further includes a PCB circuit board 105 disposed in the receiving cavity, and a cage 106 disposed on the surface of the PCB circuit board 105; the optical module 200 is inserted into the cage 106 and fixed by the cage 106.

[0080] In some embodiments, a heat sink 107 is provided on the cage 106 to dissipate heat for the optical module; in some embodiments, the heat sink 107 has protruding structures such as fins to increase the heat dissipation area.

[0081] In some embodiments, an electrical connector is provided inside the cage 106, which is configured to connect to the electrical port of the optical module 200.

[0082] In some embodiments, the optical module 200 is inserted into the cage 106 of the host computer 100, and the cage 106 fixes the optical module 200. The heat generated by the optical module 200 is conducted to the cage 106 and then diffused through the heat sink 107.

[0083] In some embodiments, the optical module 200 is inserted into the cage 106 of the host computer 100, and the electrical port of the optical module 200 is connected to the electrical connector inside the cage 106, thereby establishing an electrical signal connection between the optical module 200 and the host computer 100.

[0084] In some embodiments, the optical port of the optical module 200 is connected to the optical fiber 101, thereby enabling the optical module 200 to establish an optical signal connection with the optical fiber 101.

[0085] Figure 3 This is a structural diagram of an optical module according to some embodiments. Figure 4 This is an exploded view of an optical module according to some embodiments. Figure 3 and Figure 4 As shown, in some embodiments, the optical module 200 includes a shell, which comprises an upper shell 201 and a lower shell 202. The upper shell 201 covers the lower shell 202, forming two openings 204 and 205, one of which is an electrical port and the other is an optical port. In some embodiments, the shell forms an opening that serves as both an electrical port and an optical port.

[0086] In some embodiments, the upper housing 201 and the lower housing 202 are made of metal materials, which facilitates electromagnetic shielding and heat dissipation.

[0087] The assembly method of combining the upper housing 201 and the lower housing 202 facilitates the installation of the circuit board 300, the light emitting component 400, etc. into the housing. The upper housing 201 and the lower housing 202 can encapsulate and protect the above-mentioned devices.

[0088] The direction of the line connecting the two openings 204 and 205 can be consistent with or inconsistent with the length direction of the optical module 200. For example, opening 204 is located at the end of the optical module 200. Figure 3 The opening 205 is also located at the end of the optical module 200 (right end). Figure 3 (The left end). Alternatively, opening 204 is located at the end of optical module 200, while opening 205 is located on the side of optical module 200.

[0089] In some embodiments, the lower housing 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and perpendicular to the base plate 2021; the upper housing 201 includes a cover plate 2011, which covers the two lower side plates 2022 of the lower housing 202 to form the aforementioned housing.

[0090] In some embodiments, the lower housing 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and perpendicular to the base plate 2021; the upper housing 201 includes a cover plate 2011 and two upper side plates located on both sides of the cover plate 2011 and perpendicular to the cover plate 2011. The two upper side plates and the two lower side plates 2022 are combined to realize that the upper housing 201 covers the lower housing 202.

[0091] like Figure 3 and Figure 4 As shown, in some embodiments, the optical module includes a circuit board 300 disposed within a housing. The circuit board 300 includes circuit traces, electronic components, and chips, etc. The electronic components and chips are connected according to the circuit design through the circuit traces to realize functions such as power supply, electrical signal transmission, and grounding. Electronic components may include, for example, capacitors, resistors, transistors, and metal-oxide-semiconductor field-effect transistors (MOSFETs). Chips may include microcontroller units (MCUs), laser driver chips, transimpedance amplifiers (TIAs), limiting amplifiers (LAs), clock and data recovery chips (CDRs), power management chips, and digital signal processing (DSP) chips.

[0092] In some embodiments, the circuit board includes a rigid circuit board, which, due to its relatively rigid material, can also serve a load-bearing function, such as being able to stably support the aforementioned electronic components and chips; the rigid circuit board can also be inserted into an electrical connector in the cage 106 of the host computer 100.

[0093] In some embodiments, the circuit board further includes a flexible circuit board, which can be used independently or in conjunction with a rigid circuit board.

[0094] In some embodiments, the circuit board further includes gold fingers formed on its end surface, the gold fingers consisting of a plurality of independent pins.

[0095] In some implementations, the gold fingers are located on the surface of one side of the circuit board 300 (e.g., Figure 4 (as shown on the upper surface); In some implementations, the gold fingers are set on the upper and lower surfaces of the circuit board 300 to provide a greater number of pins, thereby adapting to situations where the number of pins is large.

[0096] In some implementations, the gold fingers of the circuit board extend from the electrical port and are inserted into the electrical connector of the host computer 100; the circuit board is inserted into the cage 106, and the gold fingers are connected to the electrical connector inside the cage 106. The gold fingers are configured to establish an electrical connection with the host computer, enabling electrical connection functions such as power supply, grounding, two-wire synchronous serial (Inter-Integrated Circuit, I2C) signal transmission, and data signal transmission.

[0097] In some embodiments, the optical module 200 further includes an unlocking component 600 located outside its housing. The unlocking component 600 is configured to establish 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.

[0098] For example, the unlocking component 600 is located on the outside of the two lower side plates 2022 of the lower housing 202, and includes a locking component that matches the cage 106 of the host computer 100. When the optical module 200 is inserted into the cage 106, the locking component of the unlocking component 600 fixes the optical module 200 in the cage 106; when the unlocking component 600 is pulled, the locking component of the unlocking component 600 moves accordingly, thereby changing the connection relationship between the locking component and the host computer, so as to release the fixation between the optical module 200 and the host computer, thereby allowing the optical module 200 to be pulled out of the cage 106.

[0099] In some embodiments, the optical module includes a light emitting component 400, which is used to emit light signals.

[0100] In some embodiments, the optical module includes a protective cover 900, which can be placed over the circuit board 300 and the light emitting component 400 to protect the light emitting component 400.

[0101] Figure 5 This is an internal structural diagram of an optical module according to some embodiments. Figure 6 This is an exploded view of the internal structure of an optical module according to some embodiments. Figure 5 and Figure 6 As shown, in some embodiments, the optical module includes an optical receiving component 500, which is used to receive signals and convert optical signals into electrical signals.

[0102] In some embodiments, at least one of the light emitting component 400 or the light receiving component 500 is located on the side of the circuit board 300 away from the gold fingers.

[0103] In some embodiments, the light emitting component 400 and the light receiving component 500 are physically separated from the circuit board 300, and then electrically connected to the circuit board 300 through corresponding flexible circuit boards or electrical connectors.

[0104] In some embodiments, the light emitting component 400 may be disposed on the upper surface of the circuit board 300.

[0105] In some embodiments, the circuit board 300 may form an insertion port 310, and the light emitting component 400 may be placed in the insertion port 310 so that the light emission path of the light emitting component 400 is flush with the surface of the circuit board 300.

[0106] In some embodiments, the light receiving component 500 may be disposed on the lower surface of the circuit board 300. The light receiving component 500 and the light emitting component 400 are offset from each other along the length of the circuit board 300.

[0107] The optical receiving component 500 may include a first optical receiving component 510, which can receive optical signals and convert them into electrical signals. The optical receiving component 500 may also include a second optical receiving component 520, which can receive optical signals and convert them into electrical signals.

[0108] There is a gap between the first optical receiving component 510 and the second optical receiving component 520, so that the pigtails of the first optical receiving component 510 and the second optical receiving component 520 are located on both sides of the optical emitting component 400, thereby avoiding the pigtail of the optical receiving component 500 being located above the optical emitting component 400 and reducing the influence of the optical receiving component 500 on the optical emitting component 400.

[0109] Figure 7This is an exploded view of a light emitting component provided according to some embodiments. Figure 8 This is an exploded view of another light emitting component provided according to some embodiments. Figure 9 This is a partial view of a light emitting component according to some embodiments. Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, the light emitting component 400 may include a carrier plate 410. The carrier plate 410 may be embedded in the insertion port 310 of the circuit board 300. The carrier plate 410 may support the optoelectronic device of the light emitting component 400 so that the light emission path of the light emitting component 400 can be flush with the upper surface of the circuit board 300. The material of the carrier plate 410 may be metal.

[0110] In some embodiments, the light emitting component 400 may include a first laser array 420a, which can emit at least one optical signal. The first laser array 420a may include at least one first laser 421, which can emit an optical signal. For example, the laser array 420a may include four first lasers 421 arranged side by side along the width direction of the carrier plate 410, so that the first laser array 420a can emit four optical signals.

[0111] In some embodiments, the first laser array 420a may be mounted on a semiconductor cooler to keep the temperature of the first laser array 420a within a relatively stable range.

[0112] In some embodiments, the light emitting component 400 may include a first lens array 450a. The first lens array 450a may be located in the light emission direction of the first laser array 420a to receive the light signal emitted by the first laser array 420a. The first lens array 450a may be a converging lens array so that the first lens array 450a can converge the received light signal. The first lens array 450a may include at least one first lens 451, which is a converging lens. For example, the first lens array 450a includes four first lenses 451 arranged side by side along the width direction of the carrier plate 410, and the first lenses 451 may be located in the light emission direction of the first laser 421. Alternatively, the first lens array 450a includes one first lens 451, which may be located in the light emission direction of the first laser array 420a.

[0113] In some embodiments, the light emitting component 400 may include a second lens array 430a. The second lens array 430a may be located in the light emission direction of the first laser array 420a to receive the light signal emitted by the first laser array 420a. The second lens array 430a may be a collimating lens array to collimate the received light signal. The first lens array 450a may be located in the collimating direction of the second lens array 430a to receive and converge the collimated light signal. The second lens array 430a may include at least one second lens 431, which may be a collimating lens and located in the light emission direction of the first laser 421. The first lens 451 may be located in the collimating direction of the second lens 431. For example, the second lens array 430a includes four second lenses 431 arranged side-by-side along the width direction of the carrier plate 410.

[0114] In some embodiments, the number of collimating lenses in the second lens array 430a is less than the number of converging lenses in the first lens array 450a, and a first optical multiplexer 440a may be disposed between the second lens array 430a and the first lens array 450a. The first optical multiplexer 440a can combine multiple optical signals of different wavelengths into a single optical signal comprising multiple different wavelengths.

[0115] The first optical multiplexer 440a can be located in the collimation direction of the second lens array 430a, so that the first optical multiplexer 440a can receive multiple optical signals collimated by the second lens array 430a. The first lens array 450a can be located in the output direction of the first optical multiplexer 440a, so as to receive the optical signals combined by the first optical multiplexer 440a. When the first lens array 450a is located in the output direction of the first optical multiplexer 440a, the first lens array 450a includes one first lens 451.

[0116] In some embodiments, the optical emitting component 400 may include a first fiber optic ferrule array 470a, which may be located in the light-emitting direction of the first lens array 450a and can receive at least one optical signal converged by the first lens array 450a. The first fiber optic ferrule array 470a may include at least one first fiber optic ferrule 471, which may be located in the light-emitting direction of the first lens 451. For example, the first fiber optic ferrule array 470a may include four first fiber optic ferrules 471 arranged side by side along the width direction of the carrier plate 410, so that the first fiber optic ferrule array 470a can emit four optical signals. Alternatively, the first fiber optic ferrule array 470a may include one first fiber optic ferrule 471, so that the first fiber optic ferrule array 470a can emit one optical signal.

[0117] The number of first fiber ferrules 471 in the first fiber ferrule array 470a is the same as the number of first lenses 451 in the first lens array 450a, so that the optical signal is converged from the first lens array 450a to the first fiber ferrule array 470a. For example, the first lens array 450a includes one first lens 451, and the first fiber ferrule array 470a includes one first fiber ferrule 471.

[0118] In some embodiments, the optical emitting component 400 may include a first isolator array 460a. The first isolator array 460a may be located between the first lens array 450a and the first fiber optic ferrule array 470a, and may be positioned in the converging direction of the first lens array 450a to prevent the optical signal from returning along its original path to the first laser array 420a. The first isolator array 460a may include at least one first isolator 461, which may be located between the first lens 451 and the first fiber optic ferrule 471. For example, the first isolator array 460a includes four first isolators 461 arranged side-by-side along the width direction of the carrier plate 410, with the first isolators 461 located between the first lens 451 and the first fiber optic ferrule 471. Alternatively, the first isolator array 460a may include one first isolator 461, located between the first lens 451 and the first fiber optic ferrule 471.

[0119] The number of first isolators 461 in the first isolator array 460a is the same as the number of first lenses 451 in the first lens array 450a, so that the optical signal converged by the first lens array 450a cannot return along the original path. For example, the first lens array 450a includes one first lens 451, and the first isolator array 460a includes one first isolator 461.

[0120] The following description uses the example of an optical transmitting component 400 transmitting eight optical signals to illustrate the solution provided in this disclosure. Because the diameter of the first fiber optic ferrule 471 is relatively large, and the center-to-center distance between any two adjacent first fiber optic ferrules 471 is also relatively large, the space occupied by the eight parallel-arranged first fiber optic ferrules 471 is quite large when the optical transmitting component 400 transmits eight optical signals. Therefore, the following description of the optical transmitting component 400 transmitting eight optical signals will only cover the case of one first fiber optic ferrule 471 and one second fiber optic ferrule 472.

[0121] In some embodiments, the light emitting component 400 may include a second laser array 420b, which can emit at least one optical signal. The second laser array 420b may include at least one second laser, which can emit an optical signal. For example, the second laser array 420b may include four second lasers arranged side-by-side along the width direction of the carrier plate 410, so that the second laser array 420b can emit four optical signals.

[0122] In some embodiments, the light emitting component 400 may include a third lens array 450b. The third lens array 450b may be located in the light emission direction of the second laser array 420b to receive the light signal emitted by the second laser array 420b. The third lens array 450b may be a converging lens array to converge the received light signal. The third lens array 450b may include at least one third lens 452, which is a converging lens. For example, the third lens array 450b includes one third lens 452, which may be located in the light emission direction of the second laser array 420b.

[0123] In some embodiments, the light emitting component 400 may include a fourth lens array 430b. The fourth lens array 430b may be located in the light emission direction of the second laser array 420b to receive the light signal emitted by the second laser array 420b. The fourth lens array 430b may be a collimating lens array so that it can collimate the received light signal. A third lens array 450b may be located in the collimating direction of the fourth lens array 430b so that it can receive the collimated light signal from the fourth lens array 430b and converge the light signal. The fourth lens array 430b may include at least one fourth lens, which may be a collimating lens and may be located in the light emission direction of the second laser. A third lens 452 may be located in the collimating direction of the fourth lens. For example, the fourth lens array 430b includes four fourth lenses arranged side-by-side along the width direction of the carrier plate 410.

[0124] In some embodiments, a second optical multiplexer 440b may be disposed between the fourth lens array 430b and the third lens array 450b. The second optical multiplexer 440b can combine multiple optical signals of different wavelengths into a single optical signal comprising multiple different wavelengths. The second optical multiplexer 440b may be located in the collimation direction of the fourth lens array 430b so that it can receive the multiple optical signals collimated by the fourth lens array 430b. The third lens array 450b may be located in the light output direction of the second optical multiplexer 440b to receive the optical signal combined by the second optical multiplexer 440b.

[0125] In some embodiments, the optical emitting component 400 may include a second fiber optic ferrule array 470b. The second fiber optic ferrule array 470b may be located in the light-emitting direction of the third lens array 450b and can receive at least one optical signal converged by the third lens array 450b. The second fiber optic ferrule array 470b may include at least one second fiber ferrule, which may be located in the light-emitting direction of the third lens. For example, the second fiber optic ferrule array 470b may include one second fiber ferrule so that the second fiber optic ferrule array 470b can emit one optical signal.

[0126] In some embodiments, the optical emitting component 400 may include a second isolator array 460b. The second isolator array 460b may be located between the third lens array 450b and the second fiber ferrule array 470b, and may be positioned in the converging direction of the third lens array 450b to prevent the optical signal from returning along its original path to the second laser array 420b. The second isolator array 460b may include at least one second isolator, which may be located between the third lens and the second fiber ferrule. For example, the second isolator array 460b includes one second isolator.

[0127] like Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, the carrier plate 410 may include a first carrier surface 414. The first carrier surface 414 may be located at one end of the carrier plate 410. The first carrier surface 414 may support the first laser array 420a and the second laser array 420b.

[0128] In some implementations, the carrier plate 410 may include a carrier portion 415. The carrier portion 415 may be located at the other end of the carrier plate 410. The carrier portion 415 may include a first carrier groove 4151, which may carry a first optical fiber ferrule 471.

[0129] The inner wall of the first support groove 4151 is in contact with the outer wall of the first optical fiber ferrule 471 so that the first support groove 4151 can support the first optical fiber ferrule 471. Adhesive is filled between the inner wall of the first support groove 4151 and the outer wall of the first optical fiber ferrule 471. After the adhesive solidifies, an adhesive layer is formed so that the first support groove 4151 and the first optical fiber ferrule 471 can be fixedly connected.

[0130] The inner wall of the first bearing groove 4151 and the outer wall of the first optical fiber ferrule 471 have complementary shapes, which can increase the contact area between the inner wall of the first bearing groove 4151 and the outer wall of the first optical fiber ferrule 471, reduce local stress concentration, and improve the connection stability between the first bearing groove 4151 and the first optical fiber ferrule 471.

[0131] In some embodiments, the cross-sectional shape of the first optical fiber ferrule 471 is circular, the cross-sectional shape of the first support groove 4151 is semi-circular, the gap between the inner wall of the first support groove 4151 and the outer wall of the first optical fiber ferrule 471 is equal at all points, and the adhesive layer thickness between the first support groove 4151 and the first optical fiber ferrule 471 is the same at all points, thereby reducing local stress concentration and improving the connection stability between the first support groove 4151 and the first optical fiber ferrule 471.

[0132] The radius of the semicircle is greater than or equal to the radius of the circle, so that the first bearing groove 4151 can accommodate the first optical fiber ferrule 471.

[0133] In some embodiments, the cross-sectional shape of the first fiber optic ferrule 471 is square, and the cross-sectional shape of the first carrier groove 4151 is U-shaped, which can eliminate geometric abrupt changes, reduce local stress concentration, and improve the connection stability between the first carrier groove and the first fiber optic ferrule.

[0134] The spacing of the U-shapes is greater than or equal to the side length of the square, so that the first bearing groove 4151 can accommodate the first optical fiber ferrule 471.

[0135] In some implementations, the carrier portion 415 may include a second carrier groove 4152, which may carry a second optical fiber ferrule 472.

[0136] The inner wall of the second support groove 4152 is in contact with the outer wall of the first optical fiber ferrule 471 so that the second support groove 4152 can support the second optical fiber ferrule 472. Adhesive is filled between the inner wall of the second support groove 4152 and the outer wall of the second optical fiber ferrule 472. After the adhesive solidifies, an adhesive layer is formed, so that the second support groove 4152 and the second optical fiber ferrule 472 can be fixedly connected.

[0137] The inner wall of the second bearing groove 4152 and the outer wall of the second optical fiber ferrule 472 have complementary shapes, which can increase the contact area between the inner wall of the second bearing groove 4152 and the outer wall of the second optical fiber ferrule 472, reduce local stress concentration, and improve the connection stability between the second bearing groove 4152 and the second optical fiber ferrule 472.

[0138] In some embodiments, the cross-sectional shape of the first fiber optic ferrule 471 is circular, the cross-sectional shape of the second support groove 4152 is semi-circular, the gap between the inner wall of the second support groove 4152 and the outer wall of the second fiber optic ferrule 472 is equal at all points, and the adhesive layer thickness between the second support groove 4152 and the second fiber optic ferrule 472 is the same at all points, thereby reducing local stress concentration and improving the connection stability between the second support groove 4152 and the second fiber optic ferrule 472.

[0139] The radius of the semicircle is greater than or equal to the radius of the circle, so that the second carrier groove 4152 can accommodate the second optical fiber ferrule 472.

[0140] In some embodiments, the cross-sectional shape of the second fiber optic ferrule 472 is square, and the cross-sectional shape of the second carrier groove 4152 is U-shaped, which can eliminate geometrical abrupt changes, reduce local stress concentration, and improve the connection stability between the second carrier groove 4152 and the second fiber optic ferrule 472.

[0141] The spacing of the U-shape is greater than or equal to the side length of the square, so that the second carrier groove 4152 can accommodate the second optical fiber ferrule 472.

[0142] In some embodiments, the support plate 410 may include a second support surface 412. The second support surface 412 may be located between the first support surface 414 and the support portion 415. The second support surface 412 may support the first lens array 450a, the third lens array 450b, the first isolator array 460a, and the second isolator array 460b.

[0143] In some embodiments, the carrier plate 410 may include a third carrier surface 413. The third carrier surface 413 may be located between the first carrier surface 414 and the second carrier surface 412. The third carrier surface 413 may support the first optical multiplexer 440a and the second optical multiplexer 440b.

[0144] In some embodiments, the third bearing surface 413 protrudes relative to the first bearing surface 414 so that the light output port of the first laser array 420a is flush with the light input port of the first optical multiplexer 440a, thereby ensuring coupling efficiency.

[0145] In some embodiments, the third bearing surface 413 protrudes relative to the second bearing surface 412 so that the light output port of the first optical multiplexer 440a is flush with the central axis of the first lens array 450a, thereby ensuring coupling efficiency.

[0146] In some embodiments, the carrier plate 410 may include a first limiting portion 417. The first limiting portion 417 may be disposed along the length direction of the carrier plate 410. The sidewall of the first limiting portion 417 may be in contact with the side of the first optical multiplexer 440a to define the position of the first optical multiplexer 440a in the width direction of the carrier plate 410.

[0147] The first limiting part 417 protrudes relative to the third bearing surface 413, so that the side of the first optical multiplexer 440a can be connected to the first limiting part 417, thereby limiting the position of the first optical multiplexer 440a in the width direction of the bearing plate 410.

[0148] In some embodiments, there is a gap between the first limiting part 417 and the third bearing surface 413, which can increase the contact area between the side of the first optical multiplexer 440a and the first limiting part 417, so that the side of the first optical multiplexer 440a can be tightly connected with the first limiting part 417, thereby reducing the patching error of the first optical multiplexer 440a.

[0149] In some embodiments, the carrier plate 410 may include a second limiting portion 416. The second limiting portion 416 may be disposed along the length direction of the carrier plate 410. The sidewall of the second limiting portion 416 may be in contact with the side of the second optical multiplexer 440b to define the position of the second optical multiplexer 440b in the width direction of the carrier plate 410.

[0150] The second limiting part 416 protrudes relative to the third bearing surface 413, so that the side of the second optical multiplexer 440b can be connected to the second limiting part 416, thereby limiting the position of the second optical multiplexer 440b in the width direction of the bearing plate 410.

[0151] In some embodiments, the carrier portion 415 protrudes relative to the second carrier surface 412 so that the central axis of the first lens array 450a is flush with the central axis of the first fiber optic ferrule 471, thereby ensuring coupling efficiency.

[0152] In some embodiments, a first substrate 480a is disposed on the second bearing surface 412. The first substrate 480a can support the first isolator array 460a so that the central axis of the first lens array 450a is flush with the central axis of the first isolator array 460a, thereby allowing the optical signal converged by the first lens array 450a to be incident on the first fiber optic ferrule array 470a through the first isolator array 460a, but not to return to the first lens array 450a through the first isolator array 460a. For example, the first substrate 480a can support the first isolator 461.

[0153] In some embodiments, a second substrate 480b is disposed on the second bearing surface 412. The second substrate 480b can support the second isolator array 460b so that the central axis of the third lens array 450b is flush with the central axis of the second isolator array 460b, thereby allowing the optical signal converged by the third lens array 450b to be incident on the second fiber optic ferrule array 470b via the second isolator array 460b, but not to return to the third lens array 450b via the second isolator array 460b. For example, the second substrate 480b can support the second isolator.

[0154] In some embodiments, the carrier plate 410 may include a fourth carrier surface 411. The fourth carrier surface 411 may be located on one side of the second carrier surface 412, that is, the fourth carrier surface 411 may be located at the edge of the carrier plate 410. The fourth carrier surface 411 may be connected to the bottom surface of one side wall of the insertion port 310 so that the carrier plate 410 can support the circuit board 300. The fourth carrier surface 411 is recessed relative to the second carrier surface 412, and the side surface of one side wall of the insertion port 310 and the connection surface between the second carrier surface 412 and the fourth carrier surface 411 are connected to increase the contact area between the circuit board 300 and the carrier plate 410 and improve the connection stability between the circuit board 300 and the carrier plate 410.

[0155] Figure 10 This is a structural diagram of a protective cover provided according to some embodiments. Figure 11 A cross-sectional view of the internal structure of an optical module according to some embodiments. Figure 1 . Figure 12 A cross-sectional view of the internal structure of an optical module according to some embodiments. Figure 2 .like Figure 10 , Figure 11 and Figure 12 As shown, in some embodiments, the protective cover 900 may include a top plate 910. The protective cover 900 may include a first side plate 920, which may be disposed along the width direction of the protective cover 900. The top of the first side plate 920 may be connected to the top plate 910, and the bottom of the first side plate 920 may be connected to the support portion 415, so that the protective cover 900 forms a cavity in which the photoelectric device of the light emitting component 400 can be placed to protect the photoelectric device of the light emitting component 400.

[0156] The protective cover 900 may include a second side plate 930. The top of the second side plate 930 may be connected to the top plate 910, and the bottom of the second side plate 930 may be connected to the upper surface of one side wall of the insertion port 310. One end of the second side plate 930 is connected to the first side plate 920 so that the protective cover 900 forms a cavity in which the photoelectric device of the light emitting component 400 can be placed to protect the photoelectric device of the light emitting component 400.

[0157] In some embodiments, the first side plate 920 may have a first clearance notch 921, which may be correspondingly provided with the first bearing groove 4151. The first clearance notch 921 may be used to avoid the first optical fiber ferrule 471 in order to protect the first optical fiber ferrule 471.

[0158] In some embodiments, the area of ​​the first clearance notch 921 is greater than or equal to the area of ​​the first fiber optic ferrule 471 protruding from the first bearing groove 4151, so that the first clearance notch 921 can avoid the first fiber optic ferrule 471.

[0159] In some embodiments, the first clearance notch 921 is complementary to the outer wall shape of the first fiber optic ferrule 471, which can increase the area of ​​the protective cover 900 and improve its strength. For example, the cross-section of the first fiber optic ferrule 471 is circular, and the cross-section of the first clearance notch 921 is semi-circular. Alternatively, the cross-section of the first fiber optic ferrule 471 is square, and the cross-section of the first clearance notch 921 is U-shaped.

[0160] In some embodiments, the first side plate 920 may have a second clearance notch 922, which may be correspondingly provided with the second bearing groove 4152. The second clearance notch 922 may be used to avoid the second fiber optic ferrule 472 in order to protect the second fiber optic ferrule 472.

[0161] In some embodiments, the area of ​​the second clearance notch 922 is greater than or equal to the area of ​​the second fiber optic ferrule 472 protruding from the first bearing groove 4151, so that the second clearance notch 922 can avoid the second fiber optic ferrule 472.

[0162] In some embodiments, the second clearance notch 922 is complementary to the outer wall shape of the second fiber optic ferrule 472, which can increase the area of ​​the protective cover 900 and improve its strength. For example, the cross-section of the second fiber optic ferrule 472 is circular, and the cross-section of the second clearance notch 922 is semi-circular. Alternatively, the cross-section of the second clearance notch 922 is square, and the cross-section of the first clearance notch 921 is U-shaped.

[0163] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. An optical module characterized by comprising: The application relates to an optical module. The optical module comprises: a circuit board; a light emitting component connected with the circuit board and used for emitting a light signal; wherein the light emitting component comprises: a first laser used for emitting the light signal; a first lens located in a light emitting direction of the first laser and used for converging the light signal; a first fiber stub located in a converging direction of the first lens and used for receiving the light signal; a first isolator located between the first lens and the first fiber stub; a bearing plate comprising: a first bearing surface bearing the first laser; a second bearing surface bearing the first lens and the first isolator; 2. The optical module according to claim 1, characterized by a first bearing groove with an inner wall connected with an outer wall of the first fiber stub to bear the first fiber stub; the inner wall of the first bearing groove and the outer wall of the first fiber stub are complementary in shape.

3. The optical module according to claim 1, characterized by The cross section of the first fiber stub is circular, and the cross section of the first bearing groove is semicircular, and the radius of the semicircular shape is greater than or equal to the radius of the circular shape.

4. The optical module according to claim 1, characterized by The cross section of the first fiber stub is square, and the cross section of the first bearing groove is U-shaped, and the spacing of the U-shaped is greater than or equal to the side length of the square. The bearing plate comprises: a bearing part provided with the first bearing groove; The optical module further comprises: a protective cover with a bottom connected with the bearing part and comprising: a top plate; a first side plate with a top connected with the top plate and a bottom connected with the bearing part; 5. The optical module according to claim 4, characterized by the first side plate is formed with a first avoiding notch corresponding to the first bearing groove, and the first avoiding notch is used for avoiding the first fiber stub.

6. The optical module of claim 1, wherein, The first avoiding notch and the outer wall of the first fiber stub are complementary in shape. The second bearing surface is provided with:

7. The optical module of claim 1, wherein, a first substrate provided with the first isolator to make the central axis of the first isolator and the central axis of the first lens flush in height. Further comprising:

8. The optical module according to claim 7, characterized by a second lens located between the first laser and the first lens and located in the light emitting direction of the first laser and used for collimating the light signal. The bearing plate further comprises: a third bearing surface located between the first bearing surface and the second bearing surface and protruding relative to the second bearing surface; a first limiting part protruding relative to the third bearing surface; The light emitting component further comprises:

9. The optical module according to claim 8, characterized by a first optical multiplexer located between the second lens and the first lens and located in the collimating direction of the second lens, with a bottom connected with the third bearing surface and a side connected with the first limiting part.

10. The optical module of claim 4, wherein, There is a gap between the first limiting part and the third bearing surface. The bearing plate comprises: a fourth bearing surface located on one side of the second bearing surface and recessed relative to the second bearing surface; The circuit board has: an embedding entrance for embedding the bearing plate; one side wall lower surface of the embedding entrance is connected with the fourth bearing surface.

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