Optical transmitting assembly, optical transceiving assembly, optical module, optical communication device, and optical network system

Abstract

The present application relates to the technical field of optical communications, and provides an optical transmitting assembly, an optical transceiving assembly, an optical module, an optical communication device, and an optical network system. The optical transmitting assembly comprises a first optical transmitter, a second optical transmitter, and a first optical lens group; the first optical transmitter is a single-chip dual-wavelength laser and is used for transmitting a first optical signal, wherein the first optical signal comprises a first wavelength optical signal and a second wavelength optical signal; the second optical transmitter is a single-wavelength laser and is used for transmitting a second optical signal, wherein the second optical signal comprises a third wavelength optical signal; the first optical lens group comprises a multiplexing element, and the multiplexing element is used for combining the first optical signal and the second optical signal into a first transmitted optical signal. The optical transmitting assembly reduces the optical path complexity, and the assembly has a smaller size and the reduced manufacturing cost.

Description

Optical transmitting components, optical transceiver components, optical modules, optical communication equipment and optical network systems

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on January 4, 2024, with application number 202410016330.3 and application name “Optical transmitting component, optical transceiver component, optical module, optical communication equipment and optical network system”, and the Chinese patent application filed with the State Intellectual Property Office on January 9, 2024, with application number 202410034037.X and application name “Optical transmitting component, optical transceiver component, optical module, optical communication equipment and optical network system”, all of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of optical communication technology, and in particular to an optical transmitting component, an optical transceiver component, an optical module, an optical communication device, and an optical network system. Background Art

[0003] With the development of modern society and the continuous iteration of communication services, networks need to support higher transmission rates, lower transmission latency, and stronger connectivity. Optical transmission networks, with their high bandwidth, low cost, and high reliability, are gradually becoming the mainstream solution for modern communications. This is especially true for new networks, especially access networks represented by fiber-to-the-home (FTTH), which are being deployed on a large scale.

[0004] A passive optical network (PON) generally consists of an optical line terminal (OLT), an optical network terminal (ONT) / optical network unit (ONU), and an optical distribution network (ODN). Based on the generational differences in data rates, PONs can be categorized as GPON, 10G PON, and 50G PON. PON systems typically use different upstream and downstream wavelengths, utilizing wavelength division multiplexing (WDM) technology to achieve single-fiber bidirectional transmission. Typically, within a single-fiber bidirectional optical component, the transmitting and receiving optical paths are coupled to the optical fiber to achieve optical transmission and reception.

[0005] With the evolution of PON systems, GPON has been deployed on a large scale, 10G PON is gradually increasing in volume, and will be gradually upgraded to 50G PON in the future. This will lead to the coexistence of multiple generations, that is, the same PON system will have different generations such as GPON, 10G PON, and 50G PON. However, due to the large number of wavelengths that need to be received and transmitted, the number of optical transmission and reception devices is large, and the number of multiplexing and demultiplexing devices required is also large. This results in the large size of optical components in the coexistence of multiple generations, making it difficult to meet module requirements. In addition, the optical path complexity within the optical components is high, coupling is difficult, and manufacturing costs are high. Summary of the Invention

[0006] The embodiments of the present application provide optical transmitting components, optical transceiver components, optical modules and optical communication equipment, as well as optical network systems for multi-generation coexistence systems. The optical components provided by the embodiments of the present application are small in size, low in optical path complexity, and low in coupling difficulty, which lowers manufacturing costs, reduces occupied space, and facilitates management and maintenance.

[0007] In a first aspect, an embodiment of the present application provides an optical transmitting component, comprising a first optical transmitter, a second optical transmitter and a first optical lens group; the first optical transmitter is a single-chip dual-wavelength laser, configured to transmit a first optical signal, the first optical signal comprising a first wavelength optical signal and a second wavelength optical signal; the second optical transmitter is a single-wavelength laser, configured to transmit a second optical signal, the second optical signal comprising a third wavelength optical signal; the first optical lens group comprises a combining element, configured to combine the first optical signal and the second optical signal into a first transmitting optical signal.

[0008] In the optical transmission component provided in the first aspect of the embodiment of the present application, the first optical transmitter is embedded with a dual-wavelength laser chip, which is a chip-level dual-transmitter in one, and can simultaneously emit optical signals of two different wavelengths; the second optical transmitter is embedded with a single-wavelength laser chip, which can emit a single-wavelength optical signal. The combination of the two optical transmitters can realize a three-in-one optical transmission component, and the optical transmission component has a small size, low optical path complexity, low coupling difficulty, and low manufacturing cost.

[0009] In a possible implementation of the first aspect, a combining element is provided on both the transmission optical path of the first optical signal and the transmission optical path of the second optical signal. The first optical signal and the second optical signal are combined at the combining element to form the first transmission optical signal.

[0010] In a possible implementation of the first aspect, the first optical lens group further includes a first reflective component, which includes one or more reflective elements; the first reflective component is arranged on the transmission optical path of the first optical signal, and the first reflective component is used to reflect the first optical signal to the combining element, which is arranged on the transmission optical path of the second optical signal; or, the first reflective component is arranged on the transmission optical path of the second optical signal, and the first reflective component is used to reflect the second optical signal to the combining element, which is arranged on the transmission optical path of the first optical signal; the first optical signal and the second optical signal converge at the combining element, and the combined signal is formed into a first transmitting optical signal.

[0011] In a possible implementation of the first aspect, the emission optical path of the first optical signal or the emission optical path of the second optical signal is perpendicular to the light outlet, and the angle between the emission optical path of the first optical signal and the emission optical path of the second optical signal is 90 degrees.

[0012] In a possible implementation of the first aspect, the emission optical path of the first optical signal and the emission optical path of the second optical signal are both perpendicular to the light outlet, and the angle between the emission optical path of the first optical signal and the emission optical path of the second optical signal is 0 degree.

[0013] In a possible implementation of the first aspect, a shell is further included. The shell is a coaxial tube shell, including a tube base and a tube cap covering the tube base, and a light outlet is provided on the tube cap.

[0014] In a possible implementation of the first aspect, the tube base is connected to a tube pin, and the tube pin is isolated from the tube base by an insulating material.

[0015] In a possible implementation of the first aspect, the first optical transmitter, the second optical transmitter and the first optical lens group are located in a housing, a tube cap lens is provided at the light outlet, the tube cap lens is used to collimate the first transmitted light signal, and the first transmitted light signal is emitted from the housing through the tube cap lens.

[0016] In a possible implementation of the first aspect, the first optical transmitter and the second optical transmitter are located inside the housing, the first optical lens group is located outside the housing, and the cap lens includes a first cap lens and a second cap lens, which are used to collimate the first optical signal and the second optical signal, respectively; the first optical signal is emitted from the housing through the first cap lens, and the second optical signal is emitted from the housing through the second cap lens.

[0017] In a possible implementation of the first aspect, the housing is a BOX housing, including a base and a cover plate covering the base, and the cover plate is provided with the light outlet.

[0018] In a possible implementation of the first aspect, the base is connected to a pin, and the pin is isolated from the base by an insulating material.

[0019] In a possible implementation of the first aspect, a flat window lens is provided at the light outlet, and a collimating lens is provided inside or outside the housing. The collimating lens is located inside the housing and includes a first collimating lens and a second collimating lens, with the first collimating lens being provided on the transmission path of the first light signal, and the second collimating lens being provided on the transmission path of the second light signal. Alternatively, the collimating lens is located outside the housing, provided in the light-emitting direction of the light outlet, and is used to collimate the first transmitted light signal.

[0020] In a possible implementation of the first aspect, an isolator is disposed inside or outside the housing to isolate the impact of reflected light on the performance of the optical transmission component. The isolator is located inside the housing and includes a first isolator and a second isolator, with the first isolator being disposed on the transmission path of the first optical signal and the second isolator being disposed on the transmission path of the second optical signal. Alternatively, the isolator may be located outside the housing and disposed in the light-emitting direction of the light outlet.

[0021] In a possible implementation of the first aspect, the first optical transmitter and the second optical transmitter are connected to a backlight monitor, and the backlight monitor is used to monitor working conditions of the first optical transmitter and the second optical transmitter.

[0022] In a possible implementation of the first aspect, a thermistor is encapsulated in the optical transmitting component, and the thermistor is used to monitor the temperature inside the housing.

[0023] In a second aspect, an embodiment of the present application provides an optical transmitting component, comprising a shell, a light outlet being provided on the shell, and a first optical transmitter being encapsulated in the shell; the first optical transmitter is a single-chip dual-wavelength laser, which is used to transmit a first transmitting optical signal, the first transmitting optical signal comprising a first wavelength optical signal and a second wavelength optical signal; the first transmitting optical signal is emitted from the shell through the light outlet.

[0024] In the optical transmitting component provided in the second aspect of the embodiment of the present application, the first optical transmitter is embedded with a dual-wavelength laser chip, which can simultaneously emit optical signals of two different wavelengths, belonging to chip-level dual-transmitter integration. The optical transmitting component encapsulated with the first optical transmitter can achieve dual-transmitter integration, and the optical transmitting component has a small size, low optical path complexity, low coupling difficulty, and low manufacturing cost.

[0025] In a possible implementation of the second aspect, a first reflective component is provided on the transmission optical path of the first transmitted optical signal, the first reflective component includes one or more reflective elements, and the first reflective component is used to reflect the first transmitted optical signal to the light outlet, so that the first transmitted optical signal is emitted from the shell through the light outlet.

[0026] In a possible implementation of the second aspect, the housing is a coaxial tube housing or a BOX housing.

[0027] In a possible implementation of the second aspect, a tube cap lens is provided at the light outlet, and the tube cap lens is used to collimate the first transmitted light signal.

[0028] In a possible implementation of the second aspect, a flat window lens is provided at the light outlet, and a collimating lens is provided inside or outside the housing. The collimating lens is located inside the housing and arranged on the transmission light path of the first transmitted light signal; alternatively, the collimating lens is located outside the housing and arranged in the light output direction of the light outlet, and is used to collimate the first transmitted light signal.

[0029] In a possible implementation of the second aspect, an isolator is disposed inside or outside the housing. The isolator is located inside the housing and disposed on the transmission optical path of the first transmitted optical signal; alternatively, the isolator is located outside the housing and disposed in the light output direction of the light output port to isolate the impact of reflected light on the performance of the optical transmission component.

[0030] In a possible implementation of the second aspect, a wave splitting element is provided in the shell, which is located on the transmission optical path of the first transmitted optical signal. The wave splitting element is used to separate the first transmitted optical signal into a first wavelength optical signal and a second wavelength optical signal. A combining element and a second reflecting component are provided outside the shell, and the second reflecting component includes one or more reflecting elements; after the first wavelength optical signal is emitted from the shell, it is reflected by the second reflecting component to the combining element, and after the second wavelength optical signal is emitted from the shell, it is combined with the first wavelength optical signal by the combining element to form the first transmitted optical signal; or, after the second wavelength optical signal is emitted from the shell, it is reflected by the second reflecting component to the combining element, and after the first wavelength optical signal is emitted from the shell, it is combined with the second wavelength optical signal by the combining element to form the first transmitted optical signal.

[0031] In a possible implementation of the second aspect, the first optical transmitter is connected to a backlight monitor, and the backlight monitor is used to monitor working conditions of the first optical transmitter and the second optical transmitter.

[0032] In a possible implementation of the second aspect, a thermistor is encapsulated in the optical transmitting component, and the thermistor is used to monitor the temperature inside the housing.

[0033] In a third aspect, an embodiment of the present application provides an optical transceiver assembly, comprising an optical transmitting assembly, an optical receiving assembly, and a second optical lens group, wherein the optical transmitting assembly is the optical transmitting assembly described in any one of the first and second aspects; the optical receiving assembly comprises a first optical receiver, which is a dual-wavelength optical receiver for receiving a first received optical signal; the first received optical signal comprises a fourth wavelength optical signal and a fifth wavelength optical signal; the second optical lens group comprises a first filter, and the first received optical signal enters the first optical receiver after passing through the first filter.

[0034] In a possible implementation of the third aspect, the optical receiving component also includes a second optical receiver, which is a single-wavelength optical receiver, and the first received optical signal also includes a sixth wavelength optical signal; the second optical lens group includes a first filter, a third reflective component and a fourth reflective component, and the third reflective component and the fourth reflective component each include one or more reflective elements. The first filter is used to divide the first received optical signal into a sixth wavelength optical signal and two other optical signals. The sixth wavelength optical signal enters the second optical receiver after passing through the third reflective component, and the fourth wavelength optical signal and the fifth wavelength optical signal enter the first optical receiver after passing through the fourth reflective component.

[0035] In a possible implementation of the third aspect, a collimating and converging prism is further mounted in the optical transceiver assembly for collimating and converging the first received optical signal and the first transmitted optical signal.

[0036] In a fourth aspect, an embodiment of the present application provides an optical transceiver assembly, comprising an optical transmitting assembly, an optical receiving assembly, and a second optical lens group; the optical transmitting assembly is the optical transmitting assembly described in any one of the first and second aspects; the optical receiving assembly comprises a first optical receiver and a second optical receiver, the first optical receiver and the second optical receiver are both single-wavelength optical receivers, and the first received optical signal comprises a fourth wavelength optical signal and a fifth wavelength optical signal; the second optical lens group comprises a first filter, a third reflecting assembly, and a fourth reflecting assembly, the third reflecting assembly and the fourth reflecting assembly each comprise one or more reflecting elements, the first filter is used to divide the first received optical signal into a fourth wavelength optical signal and a fifth wavelength optical signal, the fourth wavelength optical signal enters the first optical receiver after passing through the third reflecting assembly, and the fifth wavelength optical signal enters the second optical receiver after passing through the fourth reflecting assembly.

[0037] In a possible implementation of the fourth aspect, the optical receiving component also includes a third optical receiver, which is a single-wavelength optical receiver, and the first received optical signal also includes a sixth wavelength optical signal; the second optical lens group also includes a second filter and a fifth reflective component, the fifth reflective component includes one or more reflective elements, the first filter is used to divide the first received optical signal into a fourth wavelength optical signal and other two optical signals, the fourth wavelength optical signal enters the first optical receiver after passing through the third reflective component, the second filter is used to separate the fifth wavelength optical signal and the sixth wavelength optical signal, the fifth wavelength optical signal enters the second optical receiver after passing through the fourth reflective component, and the sixth wavelength optical signal enters the third optical receiver after passing through the fifth reflective component.

[0038] In a possible implementation of the fourth aspect, a collimating and converging prism is further mounted in the optical transceiver assembly for collimating and converging the first received optical signal and the first transmitted optical signal.

[0039] In possible implementations of the third and fourth aspects, according to the optical transceiver assembly in any technical solution of the third and fourth aspects, the optical receiving assembly and the second optical lens group are encapsulated in the optical sending assembly.

[0040] In a fifth aspect, an embodiment of the present application provides an optical module, comprising an electronic component and an optical transmitting component in any one of the technical solutions of the first and second aspects, wherein the electronic component is electrically connected to the optical transmitting component; or, comprising an electronic component and an optical transceiver component as described in any one of the third and fourth aspects, wherein the electronic component is electrically connected to the optical receiving component and the optical transmitting component in the optical transceiver component, respectively.

[0041] The optical module provided in the embodiments of the present application utilizes the optical transmitting assembly of any of the technical solutions of the first and second aspects, or utilizes the optical transceiver assembly of any of the technical solutions of the third and fourth aspects. Thus, the optical module can implement the splitting and reception of uplink optical signals and the combined and transmission of downlink optical signals. Furthermore, the housing structure of the optical transceiver assembly in the optical module is compatible with conventional combined transceiver housing structures, facilitating the fabrication and packaging process, improving manufacturing efficiency and yield, and thereby reducing the construction costs of the optical module and optical network.

[0042] In a sixth aspect, an embodiment of the present application provides an optical communication device, comprising an input interface, an output interface, a single board, and an optical module in any technical solution of the fifth aspect, wherein the input interface, the output interface, and the optical module are fixed on the single board.

[0043] In a possible implementation of the sixth aspect, the optical communication equipment includes at least one of an optical line terminal, an optical network unit, or an optical network terminal. The optical modules in the optical communication equipment may be any two or three of GPON, 10G PON, 25G GPON, 50G GPON, EPON, 10G EPON, 25G EPON, 50G EPON, and other future generations of PON standards.

[0044] In a seventh aspect, an embodiment of the present application provides an optical network system, comprising the optical communication device and an optical distribution network in the sixth aspect, wherein the optical distribution network is connected to the optical communication device. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] FIG1 is a schematic top view of a multi-segment laser chip provided in an embodiment of the present application;

[0046] FIG2 is a schematic diagram of the overall structure of the optical transceiver assembly provided in Example 1 of the present application;

[0047] FIG2A is a schematic diagram of the light-transmitting and light-receiving circuit of the optical transceiver assembly provided in Example 1 of the present application;

[0048] FIG2B is a schematic diagram of another light-transmitting and light-receiving path of the optical transceiver assembly provided in Example 1 of the present application;

[0049] FIG3A is a schematic diagram of the packaging structure of the optical transmission component provided in Example 1 of the present application;

[0050] FIG3B is a schematic diagram of another packaging structure of the optical transmitting component provided in Example 1 of the present application;

[0051] FIG3C is a schematic diagram of another packaging structure of the optical transmitting component provided in Example 1 of the present application;

[0052] FIG3D is a schematic diagram of another packaging structure of the optical transmitting component provided in Example 1 of the present application;

[0053] FIG3E is a schematic diagram of another packaging structure of the optical transmitting component provided in Example 1 of the present application;

[0054] FIG4 is a schematic diagram of the overall structure of the optical transceiver assembly provided in Example 2 of the present application;

[0055] FIG5 is a schematic diagram of the overall structure of the optical transceiver assembly provided in Example 3 of the present application;

[0056] FIG6 is a schematic diagram of the light-transmitting and light-receiving paths of the optical transceiver assembly provided in Example 3 of the present application;

[0057] FIG7A is a schematic diagram of the packaging structure of the optical transmission component provided in Example 3 of the present application;

[0058] FIG7B is a schematic diagram of another packaging structure of the optical transmitting component provided in Example 3 of the present application;

[0059] FIG7C is a schematic diagram of another packaging structure of the optical transmission component provided in Example 3 of the present application;

[0060] FIG7D is a schematic diagram of another packaging structure of the optical transmission component provided in Example 3 of the present application;

[0061] FIG7E is a schematic diagram of another packaging structure of the optical transmission component provided in Example 3 of the present application;

[0062] FIG8A is a schematic diagram of the light-transmitting and light-receiving paths of the optical transceiver assembly provided in the fourth embodiment of the present application;

[0063] FIG8B is a schematic diagram of another light-transmitting and light-receiving path of the optical transceiver assembly provided in the fourth embodiment of the present application;

[0064] FIG8C is a schematic diagram of another light-transmitting and light-transmitting circuit of the optical transceiver assembly provided in the fourth embodiment of the present application;

[0065] FIG8D is a schematic diagram of another light-receiving and light-emitting circuit of the optical transceiver assembly provided in the fourth embodiment of the present application;

[0066] FIG9A is a schematic diagram of the light-transmitting and light-receiving paths of the optical transceiver assembly provided in Example 5 of the present application;

[0067] FIG9B is a schematic diagram of another light-transmitting and light-receiving path of the optical transceiver assembly provided in Example 5 of the present application;

[0068] FIG9C is a schematic diagram of another light-receiving and light-emitting circuit of the optical transceiver assembly provided in Example 5 of the present application;

[0069] FIG10A is a schematic diagram of the packaging structure of the optical transmission component provided in Example 5 of the present application;

[0070] FIG10B is a schematic diagram of another packaging structure of the optical transmitting component provided in Example 5 of the present application;

[0071] FIG10C is a schematic diagram of another packaging structure of the optical transmitting component provided in Example 5 of the present application;

[0072] FIG11 is a schematic diagram of the light-transmitting and light-receiving path of the optical transceiver assembly provided in Example 6 of the present application;

[0073] FIG12 is a schematic diagram of the light-receiving and light-receiving path of the optical transceiver assembly provided in Example 7 of the present application;

[0074] FIG13 is a schematic diagram of the packaging structure of the optical transmission component provided in Example 7 of the present application;

[0075] FIG14 is a schematic structural diagram of a passive optical network system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the following describes the embodiments of this application in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this application, rather than all the embodiments. It is known to those skilled in the art that with the emergence of new application scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0077] The terms "first," "second," and the like in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to these processes, methods, products, or apparatus.

[0078] The present application provides an optical transmission component, an optical transceiver component, an optical module, and an optical communication device, which can be applied to a variety of optical communication systems, including but not limited to: an optical transport network (OTN), an optical access network (OAN), a metropolitan area network (MAN), a passive optical network (PON), a wavelength division multiplexing (WDM) network, and any one or more combinations thereof. The following embodiments all take the passive optical network (PON) system as an example to provide a technical solution for multi-generation coexistence. The concepts involved are briefly explained below:

[0079] Transmitting optical sub-assembly (TOSA): The function of TOSA is to convert electrical signals into optical signals and input them into optical fibers for transmission.

[0080] Receiving optical sub-assembly (ROSA): The function of ROSA is to receive the optical signal transmitted by the optical fiber and convert it into an electrical signal.

[0081] Bi-directional optical sub-assembly (BOSA): includes optical transmitting assembly and optical receiving assembly.

[0082] An optical module consists of two main parts: an optical component and an electrical sub-assembly (ESA). The optical component can be an optical transmitter, an optical receiver, or both. The optical module's pins are electrically connected to the surrounding electronic components, and then installed in the module housing to complete the optical module.

[0083] In the optical module packaging process, if the optical components and electronic chips are directly exposed to the environment, their service life can be adversely affected. Therefore, optical modules with high reliability requirements often use airtight coaxial tube (transistor outline, TO) packaging or box (BOX) packaging technology. This allows optical components such as lasers to be sealed in a nitrogen-filled box, isolating them from the external environment and better ensuring stable operation. Among them, TO shells are usually cylindrical. Due to their small size, internal cooling and heat dissipation are difficult, and they are usually only used for short-distance transmission. However, they are low-cost and simple to process. BOX shells are usually rectangular and have a more complex structure and functions, but the shell has a large area and good heat dissipation, making them suitable for various speeds and long-distance transmission.

[0084] Passive optical network (PON) systems typically include the following three main parts:

[0085] Optical line terminal (OLT): Located at the central office, it includes optical modules and the boards and frames that house them.

[0086] Optical network unit (ONU) / optical network terminal (ONT): Located at the user end, it includes optical modules and the boards and frames that house them.

[0087] Optical distribution network (ODN): A fiber-to-the-home (FTTH) cable network that provides optical transmission channels between optical line terminals (OLTs) and optical network units (ONUs). Typically, one optical module in an OLT corresponds to one ODN.

[0088] The current mainstream GPON network is gradually unable to meet the bandwidth demand of the continuously growing high-bandwidth services. Operators need to consider new technologies to provide higher bandwidth, better services, enhance user experience, and create new value points. The currently mature and commercially deployed 10G PON technology precisely meets this demand and resolves the contradiction between business development and insufficient bandwidth. At the same time, driven by the industry, 50G PON will become the evolution path of the next generation PON network. However, since home users have less urgent demands for bandwidth upgrades, GPON and 10G PON systems will continue to provide services for a long time. Enterprises with higher network bandwidth requirements may upgrade to 50G PON systems in the future. In this case, GPON, XG(S)PON, and 50G PON optical components will coexist.

[0089] Regarding the wavelength of the optical signal, the optical line terminal in GPON uses a wavelength of 1480nm to 1500nm for transmission and a wavelength of 1290nm to 1330nm for reception. The optical line terminal in XG(S)PON uses a wavelength of 1575nm to 1580nm for transmission and a wavelength of 1260nm to 1280nm for reception. The optical line terminal in 50G PON uses a wavelength of 1340nm to 1344nm for transmission and a wavelength of 1284nm to 1288nm for reception. For ease of explanation, the first wavelength, second wavelength, third wavelength, fourth wavelength, fifth wavelength, and sixth wavelength involved in the following embodiments may be the wavelength range corresponding to any of the GPON, XG(S)PON, or 50G PON standards.

[0090] To achieve the coexistence of GPON, XG(S)PON, and 50G PON, optical transceiver components in existing solutions typically include three laser chips, packaged in a three-in-one BOX or three-in-one TO package. However, the three-in-one BOX package requires high precision in beam adjustment, which does not offer advantages in engineering applications. Performance is also difficult to guarantee, and the material cost is high, making it difficult to meet the low-cost requirements of the access network field. Although the three-in-one TO package is lower in cost and does not require high precision of the tube body, in the scenario of multi-generation coexistence, the optical component integrates a large number of single-wavelength transmitting TOs and receiving TOs. The increase in the number of TOs causes the size of the optical component to exceed the standard, making miniaturization impossible through other means. In addition, the three-way transmitting end combining makes the optical path more complex, and the transmission and reception coupling is also challenging.

[0091] In order to solve the above problems, the embodiments of the present application provide an optical transmitting component and an optical transceiver component including a single-chip dual-wavelength laser. Among them, the chip of the single-chip dual-wavelength laser is a multi-segment laser chip, which includes multiple laser segments and at least one electrical isolation segment in the direction of light transmission. The electrical isolation segment is arranged between two adjacent laser segments, and the electrical isolation depth extends at least to the lower surface of the first electrode contact layer. Because the laser chip includes multiple laser segments, each laser segment is equivalent to a laser. The laser chip realizes the integration of multiple lasers at the chip level. The laser chip that can emit multiple wavelengths is packaged into an optical transmitter. When used in an optical transmitting component, the number of optical emitting devices can be reduced, thereby reducing the cost of the optical module. Moreover, the multiple laser segments of the laser chip share a ridge waveguide layer and have the same optical path. In the package, the laser chip eliminates optical path control components such as combiners and filters, simplifies the packaging process, and reduces the packaging cost. Figure 1 shows a top-down schematic diagram of a multi-segment laser chip. The laser chip includes two laser segments A, namely a first laser segment A1 and a second laser segment A2. Each laser segment outputs laser light of a different wavelength, enabling the laser chip to output laser light of two wavelengths. To prevent electrical signal crosstalk between different laser segments A when modulated signals are applied to them, the laser chip includes at least one electrical isolation segment B, as shown in Figure 1. Adjacent laser segments A are electrically isolated by the isolation segment B. To prevent laser light from being transmitted to the backlight, the laser chip may also include at least one optical processing segment C, disposed between adjacent laser segments A. The optical processing segment C is configured to reflect laser light emitted by the laser segment A between the light-emitting end and the optical processing segment C, while transmitting laser light emitted by the laser segment A between the backlight end and the optical processing segment C. Encapsulating this laser chip as a light-emitting device and applying it to a combo optical module can reduce the size of the optical module and address the high cost of the combo optical module. Because the P-electrode layer and the N-electrode layer of the laser chip are located on the same side of the substrate layer, the carriers that excite the active layer to emit light do not need to pass through the substrate layer. Therefore, the substrate layer can be made of a material with a relatively high resistivity and relatively poor conductivity. The other layers of the laser chip are relatively thin, making electrical isolation easier, thereby avoiding signal crosstalk when the modulated signal is loaded on the N-electrode layer.

[0092] As shown in Figure 2, Embodiment 1 of the present application provides an optical transceiver assembly capable of three transmissions and three receptions, comprising an optical transmitter assembly 1001, an optical receiver assembly, and a second optical lens assembly 2040. The optical transmitter assembly 1001 utilizes a three-in-one TO package and includes a first optical transmitter 1010, a second optical transmitter 1020, and a first optical lens assembly 1030. The first optical transmitter 1010 is a dual-wavelength laser embedded with a monolithic dual-wavelength laser chip, capable of simultaneously emitting modulated optical signals of two different wavelengths, representing a chip-level dual-transmitter-in-one assembly. The second optical transmitter 1020 is a single-wavelength laser embedded with a monolithic single-wavelength laser chip. The optical receiver assembly includes at least a first optical receiver 2010 and a second optical receiver 2020a. The first optical receiver 2010 is a single-wavelength receiver, while the second optical receiver 2020a is a dual-wavelength receiver. The optical receiver assembly utilizes discrete TO packages, with the first optical receiver 2010 and the second optical receiver 2020a utilizing separate TO packages. The optical transceiver assembly is connected to the optical fiber 4000. The optical transceiver assembly is also provided with a collimating lens 3000 and an isolator 5000. The collimating lens 3000 is used to collimate and converge the first transmitted optical signal and the first received optical signal. The isolator 5000 is used to reduce the impact of reflected light on the performance of the optical transmitting assembly 1001.

[0093] Optionally, the optical path of the optical transceiver assembly provided in the first embodiment of the present application is shown by the solid and dotted arrows in Figure 2A. It should be noted that the solid and dotted arrows in the drawings of the embodiments of the present application are only for the purpose of more clearly showing the sending and receiving optical paths. The actual optical paths may overlap, and the same shall apply hereinafter. The optical transmission path is shown by the solid arrows in Figure 2A. The first optical signal emitted by the first optical transmitter 1010 and the second optical signal emitted by the second optical transmitter 1020 are combined into a first transmitting optical signal at the first combiner 1031 and emitted at the light outlet 1150 of the optical transmitting assembly 1001. The first transmitting optical signal passes through the isolator 5000, is transmitted through the first filter 2041, and is coupled into the optical fiber 4000 after being converged by the collimating lens 3000. The optical receiving path is shown by the dotted arrows in Figure 2A. The first received optical signal emitted by optical fiber 4000 is collimated by collimating lens 3000 and reaches first filter 2041. The first received optical signal includes a fourth wavelength optical signal, a fifth wavelength optical signal, and a sixth wavelength optical signal. First filter 2041 reflects the first received optical signal to second filter 2042. Second filter 2042 transmits the fourth wavelength optical signal and reflects the other two wavelength optical signals. The fourth wavelength optical signal enters first optical receiver 2010 via fourth reflector 2044, while the other two wavelength optical signals are reflected by fifth reflector 2045 and sixth reflector 2046 before entering second optical receiver 2020a. In this configuration, only two optical receivers are used to receive three optical signals of different wavelengths, resulting in a smaller optical transceiver assembly.

[0094] Optionally, as shown in FIG2B , two separate single-wavelength optical receivers TO2 and TO3 are used to replace the original dual-wavelength optical receiver TO2. The two separate single-wavelength optical receivers are respectively a second optical receiver 2020b and a third optical receiver 2030. It should be noted that 2020a represents that the second optical receiver is a dual-wavelength laser, and 2020b represents that the second optical receiver is a single-wavelength laser. The same applies hereinafter. The optical receiving path is shown by the dotted arrows in Figure 2B . The first received optical signal emitted by optical fiber 4000 is collimated by collimating lens 3000 and reaches first filter 2041. First filter 2041 reflects the first received optical signal to second filter 2042. Second filter 2042 transmits the fourth wavelength optical signal and reflects the other two wavelength optical signals. The fourth wavelength optical signal is reflected by fourth reflector 2044 and enters first optical receiver 2010. The fifth and sixth wavelength optical signals are reflected by fifth reflector 2045 and reach third filter 2043. The fifth wavelength optical signal passes through third filter 2043 and enters second optical receiver 2020b. The sixth wavelength optical signal is reflected twice by third filter 2043 and sixth reflector 2046 and enters third optical receiver 2030. In this configuration, three optical receivers are used to receive three optical signals of different wavelengths, eliminating the need for further signal demultiplexing within the optical receivers and simplifying the manufacturing process.

[0095] The following is an example of a specific implementation of the optical transmission component 1001:

[0096] As shown in Figure 3A , the optical transmitter assembly 1001a provided in the first embodiment of the present application utilizes a three-in-one TO package. The optical transmitter assembly 1001a includes a TO housing 1100 and internal components. The TO housing 1100 includes a base 1110, a cap 1140, an insulator 1120, and pins 1130. Pins 1130 are isolated from the base 1110 by the insulator 1120. Cap 1140 has an opening, which serves as a light outlet 1150. A cap lens 1151 is located at light outlet 1150. The internal package of the optical transmission component 1001a includes: a thermoelectric cooler 1040, the hot surface of which is in contact with the tube holder 1110, and a heat sink or heat sink 1060 is mounted on the cold surface. The thermoelectric cooler 1040 is used to control the temperature of the components fixed thereon; the first optical transmitter 1010 is a dual-wavelength laser for transmitting a first optical signal, which includes a first wavelength optical signal and a second wavelength optical signal; the second optical transmitter 1020 is a single-wavelength laser for transmitting a second optical signal, which includes a third wavelength optical signal. Optical signal; the first optical transmitter 1010 is mounted on the first heat sink 1051, the second optical transmitter 1020 is mounted on the second heat sink 1052, and the first heat sink 1051 and the second heat sink 1052 are both mounted on the heat sink 1060; in addition, a first optical lens group is also mounted on the heat sink 1060, including a first combiner 1031a, which is used to combine the first optical signal and the second optical signal into a first transmission optical signal, and the first transmission optical signal is emitted from the optical transmission component 1000 through the tube cap lens 1151.

[0097] Optionally, to ensure the stability of the optical signal, a backlight monitor is encapsulated in the optical transmitting component 1001a and fixed on the heat sink 1060 or the thermoelectric cooler 1040. As shown in Figure 3A, the first backlight monitor 1071 is arranged on the back of the first optical transmitter 1010, and the second backlight monitor 1072 is arranged on the back of the second optical transmitter 1020, which are used to monitor the working conditions of the first optical transmitter 1010 and the second optical transmitter 1020, respectively.

[0098] Optionally, a thermistor 1080 is encapsulated in the optical transmitting component 1001 a , as shown in FIG. 3A . The thermistor 1080 is fixed on the thermoelectric cooler 1040 and is used to monitor the temperature inside the TO housing 1100 .

[0099] Those skilled in the art will appreciate that the first optical transmitter 1010 and the second optical transmitter 1020 can be mounted at different positions in the TO housing 1100 as needed.

[0100] Optionally, as shown in Figure 3A, the transmitting optical path of the first optical transmitter 1010 is perpendicular to the light outlet 1150, and the transmitting optical path of the second optical transmitter 1020 is 90 degrees to the transmitting optical path of the first optical transmitter 1010. The first optical signal and the second optical signal are combined into a first transmitting optical signal at the first combiner 1031a, and are emitted from the optical transmitting component 1001a through the tube cap lens 1151.

[0101] Alternatively, FIG3B illustrates another optical transmission assembly 1001b provided in Example 1 of the present application. Compared to optical transmission assembly 1001a, the first optical transmitter 1010 and the second optical transmitter 1020 are arranged differently. As shown in FIG3B , the first optical lens assembly includes a first reflector 1032a in addition to the first combiner 1031a. The first reflector 1032a reflects the second optical signal from the second optical transmitter 1020 toward the first combiner 1031a, allowing the second optical signal to merge with the first optical signal from the first optical transmitter 1010 at the first combiner 1031a to form a first transmitted optical signal. The first transmitted optical signal then exits the optical transmission assembly 1001b via the cap lens 1151.

[0102] Optionally, as shown in Figure 3B, in another optical transmitting component 1001b provided in Example 1 of the present application, the transmitting optical paths of the first optical transmitter 1010 and the second optical transmitter 1020 are 0 degrees and are both perpendicular to the light outlet 1150. The second optical signal is reflected by the first reflector 1032a to the first combiner 1031a, and is combined with the first optical signal to form a first transmitting optical signal. The first transmitting optical signal is emitted from the optical transmitting component 1001b through the tube cap lens 1151.

[0103] The above embodiments all employ a mounting method in which the first optical transmitter 1010 and the second optical transmitter 1020 are mounted vertically on the same surface. In this case, the first optical transmitter 1010 and the second optical transmitter 1020 are located on the same surface of the heat sink 1060, and this surface is perpendicular to the socket. In addition to the vertical mounting method, the first optical transmitter 1010 and the second optical transmitter 1020 can also be mounted flatly on the same surface or on different surfaces.

[0104] Optionally, Figure 3C shows another optical transmitter assembly 1001c provided in Example 1 of the present application, in which the first optical transmitter 1010 and the second optical transmitter 1020 are mounted flat on the same surface. As shown in Figure 3C, the first optical transmitter 1010 and the second optical transmitter 1020 are respectively flatly mounted on the first heat sink 1051 and the second heat sink 1052, and the second heat sink 1052 is mounted on the heat sink 1060. In addition to the heat dissipation function, the heat sink 1060 is also used to adjust the height of the second optical transmitter 1020. In this embodiment, the first optical lens group 1030 includes a first reflector 1032b and a first combiner 1031b. The first optical signal is reflected by the first reflector 1032b to the first combiner 1031b, and merged with the second optical signal at the first combiner 1031b to form a first transmission optical signal, which is then emitted from the optical transmitter assembly 1001c through the tube cap lens 1151.

[0105] Alternatively, Figure 3D illustrates another optical transmitter assembly 1001d provided in Example 1 of the present application, wherein the first optical transmitter 1010 and the second optical transmitter 1020 are mounted on opposite sides of the optical transmitter. As shown in Figure 3D , the first optical transmitter 1010 and the second optical transmitter 1020 are located on two planes of a heat sink 1060, respectively, and are mounted on a first heat sink 1051 and a second heat sink 1052, respectively. The first optical lens assembly includes a first combiner 1031b. The first optical signal and the second optical signal are combined at the first combiner 1031b to form a first transmit optical signal. The first transmit optical signal is then emitted from the optical transmitter assembly 1001d through a cap lens 1151.

[0106] It is easy to understand that the first optical transmitter 1010 and the second optical transmitter 1020 can be mounted in a variety of arrangements, not limited to the same-surface vertical mounting, same-surface flat mounting, and different-surface mounting methods listed in the above embodiments. Moreover, when the first optical transmitter 1010 and the second optical transmitter 1020 are on the same plane, they can be arranged parallel to each other, perpendicular to each other, or at a certain angle.

[0107] Optionally, FIG3E illustrates another optical transmission component 1001e provided in Example 1 of the present application. As shown in FIG3E , a cap flat window 1152 is provided at the light outlet 1150 of the optical transmission component 1001e. Because cap flat window 1152 is a flat window lens and lacks the collimating function compared to cap lens 1151, a first collimating lens 1033 and a second collimating lens 1034 are added to the interior of the optical transmission component 1001e to collimate the first optical signal and the second optical signal, respectively. The collimated first and second optical signals are combined at the first combiner 1031a into a first transmission optical signal, which is then emitted from the optical transmission component 1001e through cap flat window 1152.

[0108] It is easy to understand that for any mounting method of the first optical transmitter 1010 and the second optical transmitter 1020, the light outlet 1150 can be provided with a tube cap lens 1151 or a tube cap flat window 1152, and the combination of mounting method and tube cap setting method is not unique.

[0109] When the optical performance difference between the two optical transmitters is large, in order to achieve optical path arrangement optimization and miniaturization, the second embodiment of the present application provides another implementation method of the optical transceiver assembly. Figure 4 is a structural schematic diagram of an optical transceiver assembly provided in the second embodiment of the present application. The difference between the optical transceiver assembly and the first embodiment of the present application is that the first combiner 1031b and the first reflector 1032b are arranged outside the optical transmitting assembly 1002. It can be understood that the optical transceiver assembly provided in the second embodiment of the present application has some of the same structural and functional components as the optical transceiver assembly provided in the above-mentioned first embodiment, such as related components such as the optical receiving assembly. The arrangement of such components will not be described in detail. Only the components with differences will be described below.

[0110] As shown in FIG4 , the first combiner 1031 b and the first reflector 1032 b are arranged outside the optical transmitting component 1002. The first optical signal is emitted from the optical transmitting component 1002 through the first cap lens 1151 a, and the second optical signal is emitted from the optical transmitting component 1002 through the second cap lens 1151 b. The second optical signal is reflected by the first reflector 1032 b to the first combiner 1031 b, and is combined with the first optical signal at the first combiner 1031 b to form a first transmitting optical signal.

[0111] FIG5 is a schematic diagram of the structure of an optical transceiver assembly provided in Example 3 of the present application. As shown in FIG5 , the optical transmitter assembly uses a three-in-one BOX package. Compared to the coaxial tube structure of the TO package, the BOX package adopts a box-type structure. Generally speaking, the TO package is small in size and low in cost, while the BOX package has good reliability. The optical transmitter assembly 1003 includes a first optical transmitter 1010, a second optical transmitter 1020, and a first optical lens assembly 1030. The first optical transmitter 1010 is a dual-wavelength laser embedded with a monolithic dual-wavelength laser chip, which can simultaneously emit modulated optical signals of two different wavelengths, which is a chip-level dual-transmitter-in-one. The second optical transmitter 1020 is a single-wavelength laser embedded with a monolithic single-wavelength laser chip. The optical receiver assembly includes a first optical receiver 2010 and a second optical receiver 2020a. The first optical receiver 2010 is a single-wavelength receiver, and the second optical receiver 2020a is a dual-wavelength receiver. The first optical receiver 2010 and the second optical receiver 2020a are packaged in two separate TO packages. The optical transceiver assembly is connected to the optical fiber 4000 , and is further provided with a second optical lens group 2040 , a collimating lens 3000 and an isolator 5000 .

[0112] Optionally, the optical path of the optical transceiver assembly provided in the third embodiment of the present application is shown by the solid and dotted arrows in FIG6 . Among them, the second optical lens group 2040 includes a fourth reflector 2044, a fifth reflector 2045 and a Z-block assembly, and the Z-block assembly includes a first filter 2041, a second filter 2042, a third filter 2043 and a transparent substrate 2049. The optical transmission path is shown by the solid arrows in FIG6 . The first optical signal emitted by the first optical transmitter 1010 and the second optical signal emitted by the second optical transmitter 1020 are combined into a first transmission optical signal at the first optical lens group 1030, and the three-way combined first transmission optical signal is emitted at the light outlet 1150 of the optical transmission assembly 1003. The first transmission optical signal passes through the isolator 5000, is transmitted through the first filter 2041 of the Z-block assembly, and is converged by the collimating lens 3000 and coupled into the optical fiber 4000. The optical receiving path is shown by the dotted arrow in Figure 6. The first received optical signal emitted by the optical fiber 4000 is collimated by the collimating lens 3000 and then reaches the Z-block assembly. The first filter 2041 of the Z-block assembly reflects the first received optical signal to the second filter 2042. The second filter 2042 transmits the fourth wavelength optical signal and reflects the other two wavelength optical signals. The fourth wavelength optical signal is reflected by the fourth reflector 2044 to the first optical receiver 2010. The other two wavelength optical signals are transmitted by the third filter 2043 and reflected by the fifth reflector 2045 to enter the second optical receiver 2020a.

[0113] Specifically, the reflective surface of the z-block component can be designed with a filter (band-stop) or a direct end-face reflective film coating design; the transmissive surface can be designed with a filter (band-pass) or an anti-reflection film coating design.

[0114] The following is an example of a specific implementation of the optical transmission component 1003:

[0115] It is understandable that the optical transmitting component 1003 provided in the third embodiment of the present application may also encapsulate devices with the same structure and function as those in the optical transmitting component 1001 provided in the above-mentioned first embodiment, such as heat dissipation devices such as thermoelectric coolers, heat sinks, and heat sinks, as well as monitoring devices such as backlight monitors and thermistors. The setting method of such devices will not be repeated.

[0116] In the optical transmission component 1003 provided in Example 3 of the present application, the first optical transmitter 1010 and the second optical transmitter 1020 can have a variety of arrangements, and can be arranged in parallel side by side, perpendicular to each other, or at a certain angle. The following introduces different implementation methods. As shown in Figure 7A, an optical transmission component 1003a provided in Example 3 of the present application adopts BOX packaging. The optical transmission component 1003a includes a BOX shell 1101 and internal components. The BOX shell 1101 includes a base and a cover covering the base. The optical device is mounted inside the base. The cover is provided with a light outlet 1150, and a flat window lens, namely a BOX flat window 1153, is provided at the light outlet 1150. The BOX housing 1101 contains: a first optical transmitter 1010, a dual-wavelength laser, for transmitting a first optical signal, including a first wavelength optical signal and a second wavelength optical signal; a second optical transmitter 1020, a single-wavelength laser, for transmitting a second optical signal, including a third wavelength optical signal; and a first optical lens assembly 1030, comprising a first combiner 1031b, a first reflector 1032b, and a first collimating lens 1033 and a second collimating lens 1034. The first optical signal is collimated by the first collimating lens 1033 and then reaches the first combiner 1031b. The second optical signal is collimated by the second collimating lens 1034 and reflected by the first reflector 1032b before reaching the first combiner 1031b. The first combiner 1031b transmits the first optical signal and reflects the second optical signal. The first and second optical signals merge at the first combiner 1031b to form a first transmit optical signal, which is then emitted from the optical transmitting assembly 1003a through the BOX flat window 1153.

[0117] Alternatively, FIG7B shows another optical transmission component 1003b provided in Example 3 of the present application. As shown in FIG7B , the transmission optical paths of the first optical transmitter 1010 and the second optical transmitter 1020 are 90 degrees to each other. The first optical signal is collimated by the first collimating lens 1033 and then reaches the first combiner 1031b. The second optical signal is collimated by the second collimating lens 1034 and then reaches the first combiner 1031b. The first combiner 1031b transmits the first optical signal and reflects the second optical signal. The first optical signal and the second optical signal are combined at the first combiner 1031b to form a first transmission optical signal, which is emitted from the optical transmission component 1003b through the BOX flat window 1153. In this arrangement, only one optical path reflection occurs, which helps to reduce optical path loss.

[0118] Alternatively, FIG7C shows another optical transmission component 1003c provided in Example 3 of the present application. As shown in FIG7C , the first optical transmitter 1010 and the second optical transmitter 1020 are placed sideways and on the same side inside the BOX housing 1101. The second optical signal is collimated by the second collimating lens 1034 and reflected by the first reflector 1032b to the first combiner 1031b. The first optical signal is collimated by the first collimating lens 1033 and reaches the first combiner 1031b. The first combiner 1031b transmits the second optical signal and reflects the first optical signal. The first and second optical signals are combined at the first combiner 1031b to form the first transmission optical signal, which is finally emitted from the optical transmission component 1003c through the BOX flat window 1153. In this arrangement, the first and second optical signals are eccentric optical paths, and the sideways placement is beneficial for saving length and reducing the packaging volume of the BOX.

[0119] Alternatively, FIG7D shows another optical transmission component 1003d provided in Example 3 of the present application. As shown in FIG7D , the first optical transmitter 1010 and the second optical transmitter 1020 are placed laterally and on symmetrical sides inside the BOX housing 1101. The second optical signal is collimated by the second collimating lens 1034 and reflected by the first reflector 1032b to the first combiner 1031b. The first optical signal is collimated by the first collimating lens 1033 and reaches the first combiner 1031b. The first combiner 1031b transmits the second optical signal and reflects the first optical signal. The first optical signal and the second optical signal are combined at the first combiner 1031b to form a first transmission optical signal. The first transmission optical signal is finally emitted from the optical transmission component 1003d through the BOX flat window 1153. In this arrangement, the first optical signal and the second optical signal have symmetrical optical paths. The lateral placement is beneficial for saving length and reducing the packaging volume of the BOX.

[0120] Alternatively, Figure 7E illustrates another optical transmitter assembly 1003e provided in Example 3 of the present application. As shown in Figure 7E , the isolator 5000 in the optical transceiver assembly is replaced with two separate isolators, which are housed within the three-transmitter BOX housing 1101. The first optical lens assembly 1030 includes a first combiner 1031b, a first reflector 1032b, a first collimating lens 1033, a second collimating lens 1034, a second reflector 1035b, a third reflector 1036b, a first isolator 1037, and a second isolator 1038. The first isolator 1037 is located in the optical path between the first optical transmitter 1010 and the BOX flat window 1153, while the second isolator is located in the optical path between the second optical transmitter 1020 and the BOX flat window 1153. The first optical signal passes through the first collimating lens 1033 and the first isolator 1037 to reach the first reflector 1032b, and is reflected by the first reflector 1032b before reaching the first combiner 1031b. The second optical signal is collimated by the second collimating lens 1034, and is reflected twice by the second reflector 1035b and the third reflector 1036b before reaching the second isolator 1038. It then passes through the second isolator 1038 to reach the first combiner 1031b. The first combiner 1031b transmits the second optical signal and reflects the first optical signal. The first optical signal and the second optical signal are combined at the first combiner 1031b to form a first transmitting optical signal, which is then emitted from the optical transmitting component 1003e through the BOX flat window 1153.

[0121] The optical transceiver assembly provided in Example 4 of the present application adopts a transceiver-in-one BOX packaging structure, in which the first optical receiver 2010, the second optical receiver 2020b, the third optical receiver 2030, the first optical transmitter 1010, and the second optical transmitter 1020 are all packaged inside the BOX shell 1101, and the entire optical transmission and receiving circuit is realized through a series of mounting couplings. Figure 8A is a structural schematic diagram of an optical transceiver assembly provided in Example 4 of the present application. As shown in Figure 8A, the first optical lens group 1030 includes a first combiner 1031b, a first reflector 1032b, a first collimating lens 1033, and a second collimating lens 1034; the second optical lens group 2040 includes a Z-block assembly and a first collimating assembly 2047, the Z-block assembly includes a first filter 2041, a second filter 2042, a third filter 2043, a fourth filter 2048, a fifth reflector 2045, a sixth reflector 2046 and a transparent substrate 2049, and the first collimating assembly 2047 includes at least three collimating lenses, which are respectively used to collimate the fourth wavelength optical signal, the fifth wavelength optical signal, and the sixth wavelength optical signal. The BOX shell 1101 also encapsulates a first reflection component 2050 and a guide component. The first reflection component 2050 includes at least three reflectors, which are used to reflect the fourth wavelength optical signal, the fifth wavelength optical signal and the sixth wavelength optical signal to the first optical receiver 2010, the second optical receiver 2020 and the third optical receiver 2030 respectively; the guide component includes two reflectors, namely 2060a and 2060b, which are used to guide the first received optical signal reflected by the first filter 2041 to the second filter 2042.

[0122] It can be understood that the optical transceiver assembly provided in Example 4 of the present application also encapsulates devices with the same structure and function as those in the optical transceiver assembly provided in Example 1 above, such as related devices of the optical transmitting assembly, including heat dissipation devices such as thermoelectric coolers, heat sinks, and heat sinks, as well as monitoring devices such as backlight monitors and thermistors. The setting method of such devices will not be repeated.

[0123] The optical path of the optical transceiver assembly provided in Example 4 of the present application is shown by the solid and dotted arrows in Figure 8A. As shown by the solid arrows in Figure 8A, the optical transmission path of the first optical transmitter 1010 and the second optical transmitter 1020 are parallel. The first optical signal is collimated by the first collimating lens 1033 and reaches the first combiner 1031b. The second optical signal is collimated by the second collimating lens 1034 and reflected by the first reflector 1032b to the first combiner 1031b. The first combiner 1031b transmits the second optical signal and reflects the first optical signal. The first optical signal and the second optical signal are combined at the first combiner 1031b to form a first transmission optical signal. The first transmission optical signal is transmitted through the first filter 2041 and then emitted from the BOX flat window 1153 to enter the optical fiber 4000. The optical receiving path is shown by the dotted arrow in FIG8A . The first received optical signal is emitted from the optical fiber 4000, passes through the BOX flat window 1153, and reaches the first filter 2041. The first filter 2041 reflects the first received optical signal to the guide component. The first received optical signal is reflected by the guide components 2060a and 2060b and reaches the second filter 2042. The second filter 2042 transmits the fourth wavelength optical signal and reflects the other two wavelength optical signals. The fourth wavelength optical signal is collimated by the first collimating component 2047 and reflected by the first reflecting component 2050 before entering the first optical receiver 201. 0, the other two wavelength optical signals are reflected by the fifth reflector 2045 and reach the third filter 2043. The fifth wavelength optical signal is transmitted by the third filter 2043, collimated by the first collimating component 2047, and reflected by the first reflecting component 2050 before entering the second optical receiver 2020b. The sixth wavelength optical signal is reflected twice by the third filter 2043 and the sixth reflector 2046 before reaching the fourth filter 2048. It is then transmitted by the fourth filter 2048, collimated by the first collimating component 2047, and reflected by the first reflecting component 2050 before entering the third optical receiver 2030.

[0124] Optionally, the first optical transmitter 1010 and the second optical transmitter 1020 in the optical transceiver assembly can be arranged parallel to each other, perpendicular to each other, or at a certain angle, and are not limited to the methods listed in the embodiment. Figure 8B is a structural schematic diagram of another optical transceiver assembly provided in Example 4 of the present application. As shown in Figure 8B, the transmission light paths of the first optical transmitter 1010 and the second optical transmitter 1020 are at a certain angle and converge at the first combiner 1031a. In particular, the transmission light paths of the first optical transmitter 1010 and the second optical transmitter 1020 are at 90 degrees to each other. The optical transmission path is shown by the solid arrow in Figure 8B . The first optical signal is collimated by the first collimating lens 1033 and then reaches the first combiner 1031a. The second optical signal is collimated by the second collimating lens 1034 and then reaches the first combiner 1031a. The first combiner 1031a transmits the first optical signal and reflects the second optical signal. The first and second optical signals are combined at the first combiner 1031a to form a first transmission optical signal. The first transmission optical signal is transmitted by the first filter 2041 and then emitted from the optical transceiver assembly through the BOX flat window 1153. The optical receiving path is the same as the corresponding optical path in Figure 8A and is not further described here.

[0125] Optionally, in addition to using a Z-block assembly, the second optical lens group 2040 in the optical transceiver assembly can also use a discrete filter for light splitting. Figure 8C is a schematic structural diagram of another optical transceiver assembly provided in Example 4 of the present application. As shown in Figure 8C, the second optical lens group 2040 includes a discrete filter and a first collimating assembly 2047. The discrete filter includes a first filter 2041, a second filter 2042, a third filter 2043, and a sixth reflector 2046. The first collimating assembly 2047 includes at least three collimating lenses, such as 2047a, 2047b, and 2047c shown in Figure 8C, which are used to collimate the fourth wavelength optical signal, the fifth wavelength optical signal, and the sixth wavelength optical signal, respectively. A first reflective assembly 2050 is also encapsulated inside the BOX shell 1101, including at least three reflectors, such as 2050a, 2050b, and 2050c as shown in Figure 8C, which are used to reflect the fourth wavelength optical signal, the fifth wavelength optical signal, and the sixth wavelength optical signal to the first optical receiver 2010, the second optical receiver 2020, and the third optical receiver 2030, respectively. The optical receiving path is shown by the dotted arrows in FIG8C . After entering the optical transceiver assembly, the first received optical signal reaches the first filter 2041 and is reflected by the guide assemblies 2060 a and 2060 b to the second filter 2042. The second filter 2042 transmits the fourth wavelength optical signal and reflects the other two wavelength optical signals. The fourth wavelength optical signal is collimated by the first collimating assembly 2047 a and reflected by the first reflecting assembly 2050 a to reach the first optical receiver 2010. The other two wavelength optical signals reach the third filter 2043. The fifth wavelength optical signal is reflected by the third filter 2043 to the first collimating assembly 2047 b, collimated by the first collimating assembly 2047 b and reflected by the first reflecting assembly 2050 b to reach the second optical receiver 2020 b. The sixth wavelength optical signal is transmitted by the third filter 2043 and reflected by the sixth reflector 2046 to reach the first collimating assembly 1047 c. After being collimated by the first collimating assembly 1047 c and reflected by the first reflecting assembly 2050 c, it enters the third optical receiver 2030. The optical transmission path is the same as the optical path corresponding to FIG8A , and will not be described in detail here.

[0126] Optionally, the guiding assembly includes one or more reflectors, and is not limited to the configurations listed in Figures 8A-8C. For example, Figure 8D is a schematic diagram of the structure of another optical transceiver assembly provided in Example 4 of the present application. As shown in Figure 8D, the guiding assembly includes a reflector 2060b for guiding the first transmitted optical signal to the first filter 2041.

[0127] It is easy to understand that in the optical transceiver assembly of the integrated transceiver BOX package provided in Example 4 of the present application, the setting method of the transmitting end assembly and the setting method of the receiving end assembly are not limited to the contents listed in this embodiment, and the combination of different settings of the transmitting end and the receiving end is not unique.

[0128] Embodiments 1 to 4 of the present application provide an optical transmitting assembly comprising a single-chip dual-wavelength laser and a single-chip single-wavelength laser, and an optical transceiver assembly that realizes three transmissions and three receptions on this basis. Hereinafter, embodiments 5 to 7 of the present application provide an optical transmitting assembly comprising only one single-chip dual-wavelength laser, and an optical transceiver assembly that realizes dual transmission and dual reception on this basis, which can realize the coexistence of two generations of PON modes such as GPON and XG(S)PON, XG(S)PON and 50G PON, or GPON and 50G PON. It can be understood that the optical transceiver assembly provided in embodiments 5 to 7 of the present application is also encapsulated with devices with the same structure and function as those in the optical transceiver assembly provided in embodiments 1 to 4 above, and the setting method of such devices will not be repeated.

[0129] The optical transmission components in Examples 5 to 7 of this application each include only a single-chip dual-wavelength laser, which can simultaneously emit modulated optical signals of two different wavelengths, representing a chip-level dual-transmitter-in-one solution. Existing dual-transmitter, dual-receiver devices either use two independent optical transmitters or an optical transmitter containing two laser chips, resulting in high implementation costs and low packaging efficiency. However, the solutions in Examples 5 to 7 of this application can achieve the effects of reducing device size, lowering device costs, and improving packaging efficiency.

[0130] FIG9A is a schematic diagram of the structure of an optical transceiver assembly capable of dual transmission and dual reception, provided in Example 5 of the present application. As shown in FIG9A , the assembly includes an optical transmitting assembly 1005, an optical receiving assembly, and a second optical lens group 2040. The optical transmitting assembly 1005 adopts a dual-transmit-in-one TO package. The optical transmitting assembly emits a first transmission optical signal, which includes a first wavelength optical signal and a second wavelength optical signal. The optical receiving assembly includes a first optical receiver 2010 and a second optical receiver 2020b. The first optical receiver 2010 and the second optical receiver 2020b are both single-wavelength receivers and adopt two different TO discrete packages. The first optical receiver 2010 receives a fourth wavelength optical signal, and the second optical receiver 2020b receives a fifth wavelength optical signal. The second optical lens group 2040 adopts a discrete filter solution, including a first filter 2041, a fourth reflector 2044, and a fifth reflector 2045.

[0131] The optical path in the optical transceiver assembly provided in Example 5 of the present application is shown by the arrows in Figure 9A. The optical transmission path is shown by the solid arrow in Figure 9A. The optical transmission assembly emits a first transmission optical signal that is a combination of two transmissions. The first transmission optical signal passes through the fourth reflector 2044 and the first filter 2041 in sequence, and is converged by the collimating lens 3000 and coupled into the optical fiber 4000. The optical receiving path is shown by the dotted arrow in Figure 9A. The first received optical signal emitted by the optical fiber 4000 is collimated by the collimating lens 3000 and reaches the first filter 2041. The first filter 2041 transmits the fourth wavelength optical signal and reflects the fifth wavelength optical signal. The fourth wavelength optical signal is reflected by the fourth reflector 2044 and enters the first optical receiver 2010. The fifth wavelength optical signal is reflected by the first filter 2041 and the fifth reflector 2045 in sequence and enters the second optical receiver 2020b.

[0132] Alternatively, as shown in FIG9B , a dual-wavelength optical receiver is used instead of two separate single-wavelength optical receivers. Specifically, the second optical receiver 2020a receives a first received optical signal comprising a fourth wavelength optical signal and a fifth wavelength optical signal, and the second optical lens assembly 2040 includes a fourth reflector 2044. The optical transmission path is shown by the solid arrow in FIG9B . The optical transmission assembly emits a first transmitted optical signal, which is a combined dual-wavelength optical signal. The first transmitted optical signal is transmitted by the fourth reflector 2044, converged by the collimating lens 3000, and coupled into the optical fiber 4000. The optical reception path is shown by the dashed arrow in FIG9B . The first received optical signal emitted by the optical fiber 4000 is collimated by the collimating lens 3000 and reaches the fourth reflector 2044. The fourth reflector 2044 reflects the first received optical signal to the second optical receiver 2020a.

[0133] Alternatively, as shown in FIG9C , the collimating lens 3000 is moved to the optical path between the optical transmitting assembly 1005 and the fourth reflector 2044, so that the first transmitted optical signal first passes through the collimating lens 3000 to be converted into converged light, and then is transmitted and coupled into the optical fiber through the fourth reflector 2044. Compared to the solution of FIG9B , the device size of the optical transceiver assembly in this embodiment is smaller.

[0134] The following is an example of a specific implementation of the optical transmission component 1005:

[0135] As shown in Figure 10A , the optical transmitter assembly provided in the fifth embodiment of the present application utilizes a dual-transmitter-in-one TO package. Optical transmitter assembly 1005a includes a TO housing 1100 and internal components. TO housing 1100 includes a base 1110, a cap 1140, an insulator 1120, and pins 1130. Pins 1130 are isolated from base 1110 by insulator 1120. Cap 1140 is provided with a light outlet 1150, which is equipped with a cap lens 1151. The optical transmission component 1005a is internally packaged with: a thermoelectric cooler 1040, whose hot surface contacts the tube holder 1110 and a heat sink or heat sink block 1060 is mounted on the cold surface. The thermoelectric cooler 1040 is used to control the temperature of the components mounted thereon; the first optical transmitter 1010 is a dual-wavelength laser, used to transmit a first optical signal, which includes a first wavelength optical signal and a second wavelength optical signal; the first optical transmitter 1010 is mounted on a first heat sink 1051, which is mounted on the heat sink 1060; the first transmitted optical signal is emitted from the optical transmission component 1005a through the tube cap lens 1151.

[0136] Furthermore, as shown in FIG10B , another optical transmission assembly 1005b provided in Example 5 of the present application is shown. A first optical transmitter 1010 is flatly attached to a first heat sink 1051 , and a first reflector 1032b is disposed within the optical transmission assembly 1005b to reflect a first optical transmission signal from the first optical transmitter 1010 toward a cap lens 1151 . The first optical transmission signal then exits the optical transmission assembly 1005b through the cap lens 1151 .

[0137] Optionally, the emission light path of the first optical transmitter 1010 is perpendicular to the light outlet 1150, and the first transmitted light signal is emitted vertically from the optical transmitting component 1005b through the tube cap lens 1151; or the first transmitted light signal is reflected by the first reflector 1032b and is perpendicular to the light outlet 1150, and is emitted vertically from the optical transmitting component 1005b through the tube cap lens 1151.

[0138] Alternatively, as shown in FIG10C , another optical transmission component 1005c provided in Example 5 of the present application is shown. A cap flat window 1152 is provided at the light outlet 1150. In this case, within optical transmission component 1005c, a first collimating lens 1033 is added to the transmission optical path of the first transmitted optical signal to collimate the first transmitted optical signal. Alternatively, a collimating reflective lens can replace the functions of first collimating lens 1033 and first reflector 1032b.

[0139] FIG11 is a schematic diagram of the structure of the optical transceiver assembly provided in Example 6 of the present application. The difference from Example 5 of the present application is that the first optical transmission signal transmitted by the optical transmission assembly 1006 is converged light, and the first optical transmission signal is directly coupled into the optical fiber 4000 after passing through the fourth reflector 2044. In this case, the device size of the optical transceiver assembly is smaller.

[0140] As shown in Figure 12, this is a structural diagram of the optical transceiver component provided in Example 7 of the present application. The difference from Example 5 of the present application is that the optical sending component 1007 emits two beams of collimated light signals, and the first combiner 1031a and the second reflector 1035 are arranged outside the optical sending component 1007 to combine the two beams of collimated light signals into a first sending optical signal.

[0141] The following is an example of a specific implementation of the optical transmission component 1007:

[0142] As shown in Figure 13, the difference between the optical transmitting component provided in Example 7 of the present application and Example 5 is that a first wavelength splitter 1039 is additionally provided in the first optical lens group 1030 in the optical transmitting component 1007 to split the first transmitting optical signal into a first wavelength optical signal and a second wavelength optical signal, and emit the optical transmitting component 1007 in two light paths.

[0143] The optical transmission assembly provided in Example 7 of the present application is shown in FIG13 . A cap window 1152 is located at the light outlet 1150. The first optical transmitter 1010 is vertically attached to the first heat sink 1051, which is in turn vertically attached to the heat sink 1060. Within the optical transmission assembly 1007, a collimating lens 1033 and a first wave splitter 1039 are sequentially provided along the optical path of the first transmitted optical signal. The first optical transmitter 1010 transmits the first transmitted optical signal, which is collimated by the collimating lens 1033 and then enters the first wave splitter 1039. The first wave splitter 1039 transmits the first wavelength optical signal and reflects the second wavelength optical signal. The first wavelength optical signal is transmitted through the first wave splitter 1039 to the cap window 1152 and exits the optical transmission assembly 1007. The second wavelength optical signal is reflected twice by the first wave splitter 1039 and the first reflector 1032, then exits the optical transmission assembly 1007 through the cap window 1152.

[0144] Optionally, a collimating reflective lens is used to replace the functions of the first collimating lens 1033 and the first demultiplexer 1039 , that is, to achieve collimation and demultiplexing of the first transmitted optical signal at the same time.

[0145] The optical transmission components in the fifth to seventh embodiments of the present application are not limited to the packaging method of the coaxial tube shell TO, and can also adopt other packaging methods such as BOX packaging. For the TO packaging method, the light outlet 1150 can be provided with a tube cap lens 1151 or a tube cap flat window 1152. For the BOX packaging method, the light outlet 1150 can be provided with a BOX flat window 1153. In addition, the position of the first optical transmitter 1010 in the optical transmission component is not limited to the methods listed in the embodiments.

[0146] It can be understood that an optical transceiver assembly formed by permuting and combining any optical receiving assembly and any optical transmitting assembly in any of the above embodiments falls within the protection scope of this application.

[0147] It should be noted that the combiners described in Examples 1 to 7 of the present application may be optical devices capable of achieving a combining function, such as filters, prisms, reflectors, or MUX combiners. For example, the first combiner a in the embodiment is a filter, and the first combiner b is a prism, both of which can achieve a combining function. The reflector may be an optical device capable of a reflection function, such as a filter, a prism, or a reflector. The filter may be an optical device capable of a filtering function, such as a filter, a prism, or an optical waveguide PLC. The embodiments are not limited to the implementation devices mentioned in the embodiments.

[0148] The optical transceiver assembly in any of the above embodiments is electrically connected to a peripheral electronic assembly, or the optical transmitting assembly in any of the above embodiments is electrically connected to a peripheral electronic assembly, and then installed into an optical module housing to form an optical module.

[0149] The embodiment of the present application further provides an optical line terminal, comprising the above optical module. It is understandable that the optical line terminal is formed by connecting the above optical module to a single board and placing it in a chassis.

[0150] An embodiment of the present application also provides a passive optical network system, including the above-mentioned optical line terminal, an optical distribution network and multiple optical network units.

[0151] FIG14 is a schematic diagram of the structure of a passive optical network system provided in an embodiment of the present application, as shown in FIG14 , including:

[0152] An optical line terminal 310, wherein an optical module 300 is provided in the optical line terminal 310;

[0153] an optical distribution network 320 , the optical distribution network 320 being connected to the optical line terminal 310 ;

[0154] Multiple optical network units 330, multiple optical network units 330 are connected to the optical distribution network 320,

[0155] The multiple optical network units 330 include ONUs that support different generations of PON protocols. For example, the optical modules of some optical network units are GPON optical modules, the optical modules of some optical network units are XG PON optical modules, and the optical modules of other optical network units are 50G PON optical modules. It will be understood by those skilled in the art that this application is not limited to a specific generation standard, and the optical module 300 can support any three of GPON, XG PON, 25G GPON, 50G GPON, EPON, 10G EPON, 25G EPON, 50G EPON, and other future generation PON standards.

[0156] In the optical line terminal 310 and the passive optical network system provided in the embodiment of the present application, the optical module 300 can realize the wavelength division reception of the uplink optical signal and the wavelength combination transmission of the downlink optical signal.

[0157] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0158] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An optical transmission component, characterized in that, It includes a first optical transmitter, a second optical transmitter, and a first optical lens group; The first optical transmitter is a single-chip dual-wavelength laser for emitting a first optical signal, and the first optical signal includes a first-wavelength optical signal and a second-wavelength optical signal; the second optical transmitter is a single-wavelength laser for emitting a second optical signal, and the second optical signal includes a third-wavelength optical signal; The first optical lens group includes a multiplexing element for multiplexing the first optical signal and the second optical signal into a first transmitted optical signal.

2. The optical transmission component according to claim 1, characterized in that, The multiplexing element is disposed on both the emission optical path of the first optical signal and the emission optical path of the second optical signal.

3. The optical transmission component according to claim 1, characterized in that, The first optical lens group further includes a first reflection assembly, and the first reflection assembly includes one or more reflection elements; The first reflection assembly is disposed on the emission optical path of the first optical signal, and the first reflection assembly is used to reflect the first optical signal to the multiplexing element, and the multiplexing element is disposed on the emission optical path of the second optical signal; Alternatively, the first reflection assembly is disposed on the emission optical path of the second optical signal, and the first reflection assembly is used to reflect the second optical signal to the multiplexing element, and the multiplexing element is disposed on the emission optical path of the first optical signal.

4. The optical transmission component according to claim 2, characterized in that, The emission optical path of the first optical signal or the emission optical path of the second optical signal is perpendicular to the light output port, and the included angle between the emission optical path of the first optical signal and the emission optical path of the second optical signal is 90 degrees.

5. The optical transmission component according to claim 3, characterized in that, The emission optical paths of the first optical signal and the second optical signal are both perpendicular to the light output port, and the included angle between the emission optical path of the first optical signal and the emission optical path of the second optical signal is 0 degrees.

6. The optical transmission component according to any one of claims 1-5, characterized in that It further includes a housing, and the housing is a coaxial tube housing including a base and a tube cap covering the base, and the tube cap is provided with the light output port.

7. The optical transmission component according to claim 6, characterized in that, The first optical transmitter, the second optical transmitter, and the first optical lens group are located inside the housing, and the light output port is provided with a tube cap lens for collimating the first transmitted optical signal, and the first transmitted optical signal is emitted from the housing through the tube cap lens.

8. The optical transmitting component according to claim 6, characterized in that, The first optical transmitter and the second optical transmitter are located inside the housing, and the first optical lens group is located outside the housing. The tube cap lens includes a first tube cap lens and a second tube cap lens, which are respectively used to collimate the first optical signal and the second optical signal; the first optical signal is emitted from the housing through the first tube cap lens, and the second optical signal is emitted from the housing through the second tube cap lens.

9. The optical transmission component according to any one of claims 1-5, characterized in that, The housing is a BOX housing including a base and a cover plate covering the base, and the cover plate is provided with the light output port.

10. The optical transmission component according to claim 6 or 9, characterized in that, The light output port is provided with a flat window lens, and a collimating lens is provided inside or outside the housing; The collimating lens is located inside the housing and includes a first collimating lens and a second collimating lens. The first collimating lens is disposed on the emission optical path of the first optical signal, and the second collimating lens is disposed on the emission optical path of the second optical signal; Alternatively, the collimating lens is located outside the housing and is disposed in the light output direction of the light output port.

11. The optical transmission component according to any one of claims 6-10, characterized in that, An isolator is provided inside or outside the housing; The isolator is located inside the housing and includes a first isolator and a second isolator. The first isolator is disposed on the emission optical path of the first optical signal, and the second isolator is disposed on the emission optical path of the second optical signal; Alternatively, the isolator is located outside the housing and is disposed in the light-emitting direction of the light-emitting port.

12. An optical transmission component, characterized in that, It includes a housing, an optical output port is provided on the housing, and a first optical transmitter is encapsulated in the housing; The first optical transmitter is a single-chip dual-wavelength laser for emitting a first transmitted optical signal, and the first transmitted optical signal includes a first-wavelength optical signal and a second-wavelength optical signal; The first transmitted optical signal is emitted from the housing through the optical output port.

13. The optical transmission component according to claim 12, characterized in that, A first reflection assembly is provided on the emission optical path of the first transmitted optical signal. The first reflection assembly includes one or more reflection elements, and the first reflection assembly is used to reflect the first transmitted optical signal to the optical output port so that the first transmitted optical signal is emitted from the housing through the optical output port.

14. The optical transmission component according to claim 12 or 13, characterized in that, A wavelength division element is provided inside the housing on the emission optical path of the first transmitted optical signal. The wavelength division element is used to separate the first transmitted optical signal into the first-wavelength optical signal and the second-wavelength optical signal. An optical multiplexing element and a second reflection assembly are provided outside the housing. The second reflection assembly includes one or more reflection elements; After the first-wavelength optical signal is emitted from the housing, it is reflected by the second reflection assembly to the optical multiplexing element. After the second-wavelength optical signal is emitted from the housing, it is multiplexed with the first-wavelength optical signal by the optical multiplexing element into a first transmitted optical signal; Alternatively, after the second-wavelength optical signal is emitted from the housing, it is reflected by the second reflection assembly to the optical multiplexing element. After the first-wavelength optical signal is emitted from the housing, it is multiplexed with the second-wavelength optical signal by the optical multiplexing element into a first transmitted optical signal.

15. An optical transceiver module, characterized in that, It includes an optical transmitting component, an optical receiving component, and a second optical lens group; The optical transmitting component is the optical transmitting component according to any one of claims 1-14; The optical receiving component includes a first optical receiver. The first optical receiver is a dual-wavelength optical receiver for receiving a first received optical signal, and the first received optical signal includes a fourth-wavelength optical signal and a fifth-wavelength optical signal; The second optical lens group includes a first filter, and the first received optical signal enters the first optical receiver after passing through the first filter.

16. The optical transceiver module according to claim 15, wherein The optical receiving component further includes a second optical receiver. The second optical receiver is a single-wavelength optical receiver, and the first received optical signal further includes a sixth-wavelength optical signal; The second optical lens group includes a first filter, a third reflection component, and a fourth reflection component. The third reflection component and the fourth reflection component each include one or more reflection elements. The first filter is configured to divide the first received optical signal into the sixth-wavelength optical signal and two other optical signals. The sixth-wavelength optical signal enters the second optical receiver after passing through the third reflection component, and the fourth-wavelength optical signal and the fifth-wavelength optical signal enter the first optical receiver after passing through the fourth reflection component.

17. An optical transceiver module, characterized in that, It includes an optical transmission component, an optical reception component, and a second optical lens group; The optical transmission component is the optical transmission component according to any one of claims 1-14; The optical reception component includes a first optical receiver and a second optical receiver. Both the first optical receiver and the second optical receiver are single-wavelength optical receivers. The first received optical signal includes a fourth-wavelength optical signal and a fifth-wavelength optical signal; The second optical lens group includes a first filter, a third reflection component, and a fourth reflection component. The third reflection component and the fourth reflection component each include one or more reflection elements. The first filter is configured to divide the first received optical signal into the fourth-wavelength optical signal and the fifth-wavelength optical signal. The fourth-wavelength optical signal enters the first optical receiver after passing through the third reflection component, and the fifth-wavelength optical signal enters the second optical receiver after passing through the fourth reflection component.

18. The optical transceiver module according to claim 17, wherein The optical reception component further includes a third optical receiver. The third optical receiver is a single-wavelength optical receiver. The first received optical signal further includes a sixth-wavelength optical signal; The second optical lens group further includes a second filter and a fifth reflection component. The fifth reflection component includes one or more reflection elements. The first filter is configured to divide the first received optical signal into the fourth-wavelength optical signal and two other optical signals. The fourth-wavelength optical signal enters the first optical receiver after passing through the third reflection component. The second filter is configured to separate the fifth-wavelength optical signal and the sixth-wavelength optical signal. The fifth-wavelength optical signal enters the second optical receiver after passing through the fourth reflection component, and the sixth-wavelength optical signal enters the third optical receiver after passing through the fifth reflection component.

19. The optical transceiver module according to any one of claims 15-18, characterized in that, The optical reception component and the second optical lens group are encapsulated within the optical transmission component.

20. An optical module, characterized in that, It includes the optical transmission component according to any one of claims 1-14, or includes the optical transceiver component according to any one of claims 15-19.

21. An optical communication device, characterized in that, It includes the optical module according to claim 20.

22. The device according to claim 21, wherein, The optical communication device includes at least one of an optical line terminal, an optical network unit, or an optical network terminal.

23. An optical network system, characterized in that, It includes the optical communication device according to claim 21 and an optical distribution network, and the optical distribution network is connected to the optical communication device.

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