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

Abstract

The invention provides an optical transmitting assembly, an optical transceiving assembly, an optical module, optical communication equipment and an optical network system, and relates to the technical field of optical communication. 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, and 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, and the second optical signal comprises a third-wavelength optical signal; the first optical lens group comprises a wave combining element, and the wave combining element is used for combining the first optical signal and the second optical signal into a first sending optical signal. According to the optical transmitting assembly, the complexity of an optical path is reduced, the size of the assembly is smaller, and the manufacturing cost is lower.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of optical communication technologies, and in particular, to an optical transmission component, an optical transceiver component, an optical module, an optical communication device, and an optical network system. Background Art

[0002] With the development of modern society and the continuous iteration of communication services, the network needs to support higher transmission rates, lower transmission delays, and stronger connection capabilities. Optical transmission networks, with their characteristics such as high bandwidth, low cost, and high reliability, have gradually become the mainstream solution for modern communication. Especially for newly built networks at the present stage, access networks represented by fiber to the home are being deployed on a large scale.

[0003] 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). According to the difference in rate generations, PON can be classified into GPON, 10G PON, 50G PON, etc. PON systems generally use different uplink and downlink wavelengths and utilize wavelength division multiplexing (WDM) technology to achieve single-fiber bidirectional transmission. Usually, in a single-fiber bidirectional optical component, the transmitting optical path and the receiving optical path are coupled to the optical fiber to achieve the functions of optical transmission and optical reception.

[0004] 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, resulting in a situation where multiple generations coexist, that is, in the same PON system, different generations such as GPON, 10G PON, and 50G PON coexist. However, due to the large number of wavelengths that need to be received and transmitted, a large number of optical transmission and optical reception devices, and a large number of multiplexing and demultiplexing devices required, the size of the optical component in the case of multiple generations coexisting is large, making it difficult to meet the module requirements. Moreover, the optical path complexity in the optical component is high, the coupling difficulty is large, and the manufacturing cost is high. Summary of the Invention

[0005] The embodiments of the present application provide an optical transmission component, an optical transceiver component, an optical module, an optical communication device, and an optical network system for a multi-generation coexistence system. The optical components provided by the embodiments of the present application have a small size, low optical path complexity, and small coupling difficulty, resulting in lower manufacturing costs, reduced occupied space, and convenient management and maintenance.

[0006] In a first aspect, an embodiment of the present application provides an optical transmission component, including 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.

[0007] 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, belonging to chip-level dual-transmission integration, capable of simultaneously emitting optical signals of two different wavelengths, and the second optical transmitter is embedded with a single-wavelength laser chip, capable of emitting a single-wavelength optical signal. The combination of the two optical transmitters can realize a three-transmission-in-one optical transmission component, and the optical transmission component has small size, low optical path complexity, small coupling difficulty, and low manufacturing cost.

[0008] In a possible implementation manner of the first aspect, the multiplexing element is simultaneously disposed on the emission optical path of the first optical signal and the emission optical path of the second optical signal, and the first optical signal and the second optical signal converge at the multiplexing element and are multiplexed into a first transmitted optical signal.

[0009] In a possible implementation manner of the first aspect, 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; or, 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; the first optical signal and the second optical signal converge at the multiplexing element and are multiplexed into a first transmitted optical signal.

[0010] In a possible implementation manner 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 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.

[0011] In a possible implementation manner of the first aspect, 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.

[0012] In a possible implementation manner of the first aspect, 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 a light output port.

[0013] In a possible implementation of the first aspect, the socket is connected with pins, and the pins are isolated from the socket by an insulating material.

[0014] In a possible implementation of the first aspect, the first optical transmitter, the second optical transmitter and the first optical lens group are located inside the housing, and a cap lens is arranged at the light outlet. The cap lens is used for collimating the first transmitted optical signal, and the first transmitted optical signal is emitted from the housing through the cap lens.

[0015] In a possible implementation of the first aspect, 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 cap lens includes a first cap lens and a second cap lens, which are respectively used for collimating the first optical signal and the second optical signal; 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.

[0016] 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 light outlet is arranged on the cover plate.

[0017] In a possible implementation of the first aspect, the base is connected with pins, and the pins are isolated from the base by an insulating material.

[0018] In a possible implementation of the first aspect, a flat window lens is arranged at the light outlet, and a collimating lens is arranged 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 arranged on the emission optical path of the first optical signal, and the second collimating lens is arranged on the emission optical path of the second optical signal; or, the collimating lens is located outside the housing and is arranged in the light emission direction of the light outlet for collimating the first transmitted optical signal.

[0019] In a possible implementation of the first aspect, an isolator is arranged inside or outside the housing for isolating the influence of the 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. The first isolator is arranged on the emission optical path of the first optical signal, and the second isolator is arranged on the emission optical path of the second optical signal; or, the isolator is located outside the housing and is arranged in the light emission direction of the light outlet.

[0020] In a possible implementation of the first aspect, the first optical transmitter and the second optical transmitter are connected with a backlight monitor, and the backlight monitor is used for monitoring the working conditions of the first optical transmitter and the second optical transmitter.

[0021] In a possible implementation of the first aspect, a thermistor is encapsulated in the optical transmission component, and the thermistor is used for monitoring the temperature inside the housing.

[0022] In a second aspect, an embodiment of the present application provides an optical transmission component, including a housing with a light output port, and a first optical transmitter encapsulated in the housing. The first optical transmitter is a single-chip dual-wavelength laser for emitting a first transmitted optical signal, which includes a first-wavelength optical signal and a second-wavelength optical signal. The first transmitted optical signal is emitted from the housing through the light output port.

[0023] In the optical transmission 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 emit two optical signals with different wavelengths simultaneously, belonging to the chip-level dual-transmission integration. The optical transmission component encapsulated with the first optical transmitter can achieve dual-transmission integration, and the optical transmission component has small size, low optical path complexity, low coupling difficulty, and low manufacturing cost.

[0024] In a possible implementation of the second aspect, a first reflection component is provided on the emission optical path of the first transmitted optical signal. The first reflection component includes one or more reflection elements, and is used to reflect the first transmitted optical signal to the light output port, so that the first transmitted optical signal is emitted from the housing through the light output port.

[0025] In a possible implementation of the second aspect, the housing is a coaxial tube housing or a BOX housing.

[0026] In a possible implementation of the second aspect, a tube cap lens is provided at the light output port, and the tube cap lens is used to collimate the first transmitted optical signal.

[0027] In a possible implementation of the second aspect, a flat window lens is provided at the light output port, and a collimating lens is provided inside or outside the housing. The collimating lens is located inside the housing and is provided on the emission optical path of the first transmitted optical signal; or, the collimating lens is located outside the housing and is provided in the light output direction of the light output port, and is used to collimate the first transmitted optical signal.

[0028] In a possible implementation of the second aspect, an isolator is provided inside or outside the housing. The isolator is located inside the housing and is provided on the emission optical path of the first transmitted optical signal; or, the isolator is located outside the housing and is provided in the light output direction of the light output port, and is used to isolate the influence of the reflected light on the performance of the optical transmission component.

[0029] In a possible implementation of the second aspect, a wavelength division element is disposed inside the housing and is located 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 a first-wavelength optical signal and a 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 exits the housing, it is reflected by the second reflection assembly to the optical multiplexing element. After the second-wavelength optical signal exits the housing, it is multiplexed with the first-wavelength optical signal by the optical multiplexing element to form the first transmitted optical signal. Alternatively, after the second-wavelength optical signal exits the housing, it is reflected by the second reflection assembly to the optical multiplexing element. After the first-wavelength optical signal exits the housing, it is multiplexed with the second-wavelength optical signal by the optical multiplexing element to form the first transmitted optical signal.

[0030] 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 the operating conditions of the first optical transmitter and the second optical transmitter.

[0031] In a possible implementation of the second aspect, a thermistor is encapsulated in the optical transmission component, and the thermistor is used to monitor the temperature inside the housing.

[0032] In a third aspect, an embodiment of the present application provides an optical transceiver component, including an optical transmission component, an optical reception component, and a second optical lens group. The optical transmission component is the optical transmission component described in any one of the first aspect and the second aspect. The optical reception component includes a first optical receiver, and the first optical receiver is a dual-wavelength optical receiver for receiving a first received optical signal. 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.

[0033] In a possible implementation of the third aspect, the optical reception component further includes a second optical receiver, and the second 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 includes a first filter, a third reflection assembly, and a fourth reflection assembly. Both the third reflection assembly and the fourth reflection assembly include one or more reflection 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 reflection assembly, and the fourth-wavelength optical signal and the fifth-wavelength optical signal enter the first optical receiver after passing through the fourth reflection assembly.

[0034] In a possible implementation of the third aspect, a collimating and focusing prism is also mounted inside the optical transceiver component for collimating and focusing the first received optical signal and the first transmitted optical signal.

[0035] Fourth aspect, an embodiment of the present application provides an optical transceiver component, including an optical transmitting component, an optical receiving component, and a second optical lens group; the optical transmitting component is the optical transmitting component described in any one of the first aspect and the second aspect; the optical receiving 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, 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, a third reflection component, and a fourth reflection component, both the third reflection component and the fourth reflection component include one or more reflection 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 reflection component, and the fifth-wavelength optical signal enters the second optical receiver after passing through the fourth reflection component.

[0036] In a possible implementation manner of the fourth aspect, the optical receiving component further includes a third optical receiver, the third 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 further includes a second filter and a fifth reflection component, the fifth reflection component includes one or more reflection elements, the first filter is used to divide the first received optical signal into a 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 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 reflection component, and the sixth-wavelength optical signal enters the third optical receiver after passing through the fifth reflection component.

[0037] In a possible implementation manner of the fourth aspect, a collimating and focusing prism is also mounted in the optical transceiver component for collimating and focusing the first received optical signal and the first transmitted optical signal.

[0038] In a possible implementation manner of the third aspect and the fourth aspect, according to the optical transceiver component in any one of the technical solutions of the third aspect and the fourth aspect, wherein the optical receiving component and the second optical lens group are encapsulated in the optical transmitting component.

[0039] Fifth aspect, an embodiment of the present application provides an optical module, including an electronic component and the optical transmitting component in any one of the technical solutions of the first aspect and the second aspect, the electronic component is electrically connected to the optical transmitting component; or, including an electronic component and the optical transceiver component described in any one of the third aspect and the fourth aspect, the electronic component is electrically connected to the optical receiving component and the optical transmitting component in the optical transceiver component respectively.

[0040] The optical module provided by the embodiment of the present application adopts the optical transmission component in any technical solution of the first aspect or the second aspect, or adopts the optical transceiver component in any technical solution of the third aspect or the fourth aspect. Therefore, the optical module can realize the demultiplexing reception of the upstream optical signal and the multiplexing transmission of the downstream optical signal. Moreover, the housing structure of the optical transceiver component in the optical module is applicable to the conventional integrated transceiver housing structure, which makes the manufacturing and packaging processes easy to implement, improves the manufacturing efficiency and the yield rate, and thus reduces the construction costs of the optical module and the optical network.

[0041] In a sixth aspect, an optical communication device provided by an embodiment of the present application includes an input interface, an output interface, a single board, and the 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.

[0042] In a possible implementation manner of the sixth aspect, the optical communication device includes at least one of an optical line terminal, an optical network unit, or an optical network terminal. Among them, the optical module in the optical communication device can be any two or three of GPON, 10G PON, 25G GPON, 50G GPON, EPON, 10G EPON, 25G EPON, 50G EPON, and other future-generation PON standards that may appear.

[0043] In a seventh aspect, an optical network system provided by an embodiment of the present application includes the optical communication device in the sixth aspect and an optical distribution network, and the optical distribution network is connected to the optical communication device. Description of the Drawings

[0044] Figure 1 is a top view schematic diagram of a multi-section laser chip provided by an embodiment of the present application;

[0045] Figure 2 is an overall structure schematic diagram of an optical transceiver component provided by Embodiment 1 of the present application;

[0046] Figure 2A is a light receiving and transmitting optical path schematic diagram of an optical transceiver component provided by Embodiment 1 of the present application;

[0047] Figure 2B is another light receiving and transmitting optical path schematic diagram of an optical transceiver component provided by Embodiment 1 of the present application;

[0048] Figure 3A is a packaging structure schematic diagram of an optical transmission component provided by Embodiment 1 of the present application;

[0049] Figure 3B is another packaging structure schematic diagram of an optical transmission component provided by Embodiment 1 of the present application;

[0050] Figure 3CIt is another schematic diagram of the packaging structure of the optical transmission component provided in the first embodiment of the present application;

[0051] Figure 3D It is another schematic diagram of the packaging structure of the optical transmission component provided in the first embodiment of the present application;

[0052] Figure 3E It is another schematic diagram of the packaging structure of the optical transmission component provided in the first embodiment of the present application;

[0053] Figure 4 It is the overall structure schematic diagram of the optical transceiver component provided in the second embodiment of the present application;

[0054] Figure 5 It is the overall structure schematic diagram of the optical transceiver component provided in the third embodiment of the present application;

[0055] Figure 6 It is the optical receiving and transmitting path schematic diagram of the optical transceiver component provided in the third embodiment of the present application;

[0056] Figure 7A It is the packaging structure schematic diagram of the optical transmission component provided in the third embodiment of the present application;

[0057] Figure 7B It is another packaging structure schematic diagram of the optical transmission component provided in the third embodiment of the present application;

[0058] Figure 7C It is another packaging structure schematic diagram of the optical transmission component provided in the third embodiment of the present application;

[0059] Figure 7D It is another packaging structure schematic diagram of the optical transmission component provided in the third embodiment of the present application;

[0060] Figure 7E It is another packaging structure schematic diagram of the optical transmission component provided in the third embodiment of the present application;

[0061] Figure 8A It is the optical receiving and transmitting path schematic diagram of the optical transceiver component provided in the fourth embodiment of the present application;

[0062] Figure 8B It is another optical receiving and transmitting path schematic diagram of the optical transceiver component provided in the fourth embodiment of the present application;

[0063] Figure 8C It is another optical receiving and transmitting path schematic diagram of the optical transceiver component provided in the fourth embodiment of the present application;

[0064] Figure 8D It is another optical receiving and transmitting path schematic diagram of the optical transceiver component provided in the fourth embodiment of the present application;

[0065] Figure 9AIt is a schematic diagram of the light receiving and transmitting optical paths of the optical transceiver module provided in Embodiment 5 of the present application;

[0066] Figure 9B It is another schematic diagram of the light receiving and transmitting optical paths of the optical transceiver module provided in Embodiment 5 of the present application;

[0067] Figure 9C It is yet another schematic diagram of the light receiving and transmitting optical paths of the optical transceiver module provided in Embodiment 5 of the present application;

[0068] Figure 10A It is a schematic diagram of the packaging structure of the optical transmitting module provided in Embodiment 5 of the present application;

[0069] Figure 10B It is another schematic diagram of the packaging structure of the optical transmitting module provided in Embodiment 5 of the present application;

[0070] Figure 10C It is yet another schematic diagram of the packaging structure of the optical transmitting module provided in Embodiment 5 of the present application;

[0071] Figure 11 It is a schematic diagram of the light receiving and transmitting optical paths of the optical transceiver module provided in Embodiment 6 of the present application;

[0072] Figure 12 It is a schematic diagram of the light receiving and transmitting optical paths of the optical transceiver module provided in Embodiment 7 of the present application;

[0073] Figure 13 It is a schematic diagram of the packaging structure of the optical transmitting module provided in Embodiment 7 of the present application;

[0074] Figure 14 It is a schematic diagram of the structure of the passive optical network system provided in the embodiments of the present application. Detailed implementation manners

[0075] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the embodiments of the present application will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Those of ordinary skill in the art will understand that with the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

[0076] In the description, claims, and drawings of this application, terms such as "first" and "second" are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order different from that illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules does not necessarily have to be limited to those steps or modules clearly listed, but may include other steps or modules not clearly listed or inherent to these processes, methods, products, or devices.

[0077] This application provides an optical transmitting component, an optical transceiver component, an optical module, and an optical communication device, which can be applied to various optical communication systems. The optical communication system includes, but is not limited to, any one or a combination of multiple types such as optical transport network (OTN), optical access network (OAN), Metropolitan Area Network (MAN), passive optical network (PON), wavelength division multiplexing (WDM) network, etc. The following embodiments take the passive optical network PON system as an example to provide a technical solution for coexistence of multiple generations. Now, the related concepts are briefly described:

[0078] Transmitting optical sub-assembly (TOSA): The function of TOSA is to convert an electrical signal into an optical signal and input it into an optical fiber for transmission.

[0079] Receiving optical sub-assembly (ROSA): The function of ROSA is to receive the optical signal transmitted from the optical fiber and convert it into an electrical signal.

[0080] Bi-directional optical sub-assembly (BOSA): It includes a transmitting optical sub-assembly and a receiving optical sub-assembly.

[0081] Optical module: It includes two major parts, namely, an optical sub-assembly and an electrical sub-assembly (ESA). Among them, the optical sub-assembly can be an optical transmitting sub-assembly, an optical receiving sub-assembly, or an optical transceiver sub-assembly. Electrically connecting the pins of the optical sub-assembly to the surrounding electrical components and then installing them into the optical module housing constitutes the optical module.

[0082] In the packaging process of optical modules, if optical devices and electrical chips in the optical sub-assembly are directly exposed to the environment, it is easy to have an adverse impact on the service life. Therefore, optical modules with high reliability requirements usually adopt airtight coaxial transistor outline (TO) packaging or box (BOX) packaging technology, so that optical devices such as lasers are sealed in a box filled with nitrogen, isolated from the external environment, and better ensure stable operation. Among them, the TO housing is usually cylindrical. Because of its small volume, it is difficult to integrate a cooler, and it has difficulty in heat dissipation. It is usually only used for short-distance transmission. However, it has low cost and simple technology. The BOX housing is usually rectangular. Its structure and functions are usually more complex, but it has a large housing area and good heat dissipation, and can be used for various rates and long-distance transmission.

[0083] A passive optical network (PON) system usually includes the following three main parts:

[0084] Optical line terminal (OLT): Located at the central office end, it includes an optical module, a single board for placing the optical module, and a chassis.

[0085] Optical network unit (ONU) / optical network terminal (ONT): Located at the user end, it includes an optical module, a single board for placing the optical module, and a chassis.

[0086] Optical distribution network (ODN): A fiber-to-the-home optical cable network, whose function is to provide an optical transmission channel between the optical line terminal and the optical network unit. Generally speaking, one optical module in the optical line terminal corresponds to one optical distribution network.

[0087] The current mainstream GPON network is gradually unable to meet the bandwidth demand of the continuously growing high-bandwidth business. Operators need to consider new technologies to provide higher bandwidth, better services, improve user experience, and create new value points. The current mature commercially deployed 10G PON technology can just meet this demand and solve 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 do not have such an urgent demand for bandwidth upgrades, GPON and 10GPON systems will still need to continue to serve 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 will coexist.

[0088] 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, and 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, the second wavelength, the third wavelength, the fourth wavelength, the fifth wavelength, and the sixth wavelength involved in the following embodiments may be the wavelength range corresponding to any standard of GPON, XG(S)PON, or 50G PON.

[0089] In order to realize the coexistence of GPON, XG(S)PON and 50G PON optical transceiver components, the optical transmission components in the existing solutions usually include three laser chips, using a three-in-one BOX package or a three-in-one TO package. However, the three-in-one BOX package has high requirements for the accuracy of beam adjustment, which does not have advantages in engineering applications, and the performance is difficult to guarantee. In addition, the cost of the materials used is high, which makes it difficult to meet the low-cost requirements in the access network field. Although the three-in-one TO package has a lower cost and does not require high accuracy for 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 seriously, and it cannot be miniaturized by other means. In addition, the three-way transmitting end combination makes the optical path more complicated, which is also challenging in the transmission and reception coupling.

[0090] To solve the above problems, the embodiments of the present application provide an optical transmission 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. In the optical transmission direction, it includes a plurality of laser segments and at least one electrical isolation segment. 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. For this laser chip, since it includes a plurality of laser segments, each laser segment is equivalent to a laser, and this laser chip realizes the integration of multiple lasers at the chip level. Packaging the laser chip capable of emitting multiple wavelengths into an optical transmitter and applying it in the optical transmission component can reduce the number of optical emission devices, thereby reducing the cost of the optical module. Moreover, the multiple laser segments of this laser chip share the ridge waveguide layer and have the same optical path. In the packaging of the laser chip, optical path control components such as a multiplexer and a filter are omitted, simplifying the packaging process and reducing the packaging cost. As Figure 1 shown, it is a top view schematic diagram of a multi-segment laser chip. This laser chip includes two laser segments A, namely the first laser segment A1 and the second laser segment A2. Each laser segment outputs a laser of one wavelength outward, and thus this laser chip can output lasers of two wavelengths outward. When modulating signals are loaded on different laser segments A, to avoid electrical signal crosstalk between different laser segments A, as Figure 1 shown, the laser chip includes at least one electrical isolation segment B, and the electrical isolation between two adjacent laser segments A is achieved by the electrical isolation segment B. To avoid the transmission of laser light to the backlight end, the laser chip may further include at least one optical processing segment C. The optical processing segment C is arranged between two adjacent laser segments A. The optical processing segment C is used to reflect the laser light emitted by the laser segment A located between the light output end and this optical processing segment C, and make the laser light emitted by the laser segment A located between the backlight end and this optical processing segment C transmit. Packaging this laser chip into an optical emission device and applying it in a Combo optical module can reduce the size of the optical module and solve the problem of high cost of the Combo optical module. Also, since the P electrode layer and the N electrode layer of this laser chip are on the same side of the substrate layer, the carriers that stimulate the active layer to emit light do not need to pass through the substrate layer. Furthermore, a material with a relatively large resistivity and poor conductivity can be selected for the substrate layer, and the other layers of the laser chip are relatively thin, making electrical isolation relatively easy, thereby avoiding signal crosstalk that occurs when a modulating signal is loaded on the N electrode layer.

[0091] As Figure 2As shown in the figure, Embodiment 1 of the present application provides an optical transceiver module capable of realizing three transmissions and three receptions, including an optical transmission module 1001, an optical reception module, and a second optical lens group 2040. The optical transmission module 1001 adopts a three-in-one TO package as a whole, including a first optical transmitter 1010, a second optical transmitter 1020, and a first optical lens group 1030. Among them, the first optical transmitter 1010 is a dual-wavelength laser, embedded with a single-chip dual-wavelength laser chip, and can simultaneously emit two different wavelengths of modulated optical signals, belonging to the chip-level two-in-one. The second optical transmitter 1020 is a single-wavelength laser, embedded with a single-chip single-wavelength laser chip. The optical reception module includes at least a first optical receiver 2010 and a second optical receiver 2020a. Among them, the first optical receiver 2010 is a single-wavelength receiver, and the second optical receiver 2020a is a dual-wavelength receiver. The optical reception module adopts a discrete TO package, that is, the first optical receiver 2010 and the second optical receiver 2020a respectively adopt different TO packages. The optical transceiver module is connected to an optical fiber 4000. A collimating and focusing lens 3000 and an isolator 5000 are also provided in the optical transceiver module. The collimating and focusing lens 3000 is used to collimate and focus the first transmitted optical signal and the first received optical signal, and the isolator 5000 is used to reduce the influence of the reflected light on the performance of the optical transmission module 1001.

[0092] Optionally, the optical path of the optical transceiver module provided in Embodiment 1 of the present application is as Figure 2A shown by the solid and dashed arrows in the figure. It should be noted that the solid and dashed arrows in the accompanying drawings of the embodiments of the present application are only for more clearly showing the transmission and reception optical paths. The actual optical paths may coincide. The same applies hereinafter. The optical transmission path is as Figure 2A shown by the solid arrow in the figure. 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 transmitted optical signal at a first multiplexer 1031 and emitted from the light output port 1150 of the optical transmission module 1001. The first transmitted optical signal passes through the isolator 5000, is transmitted through a first filter 2041, and is coupled into the optical fiber 4000 after being focused by the collimating and focusing lens 3000. The optical reception path is as Figure 2AAs shown by the dashed arrow in the figure, the first received optical signal emitted by the optical fiber 4000 reaches the first filter 2041 after being collimated by the collimating and focusing lens 3000. The first received optical signal includes an optical signal of a fourth wavelength, an optical signal of a fifth wavelength, and an optical signal of a sixth wavelength. The first filter 2041 reflects the first received optical signal to the second filter 2042. The second filter 2042 transmits the optical signal of the fourth wavelength and reflects the optical signals of the other two wavelengths. The optical signal of the fourth wavelength enters the first optical receiver 2010 through the fourth mirror 2044, and the optical signals of the other two wavelengths enter the second optical receiver 2020a after being reflected by the fifth mirror 2045 and the sixth mirror 2046. In this setting mode, only two optical receivers are used to receive optical signals of three different wavelengths, and the volume of the optical transceiver module is smaller.

[0093] Optionally, as Figure 2B shown, two discrete single-wavelength optical receivers TO2 and TO3 are used to replace the original dual-wavelength optical receiver TO2. The two discrete single-wavelength optical receivers are the second optical receiver 2020b and the third optical receiver 2030 respectively. 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, and the same applies hereinafter. The optical receiving path is as Figure 2B shown by the dashed arrow in the figure. The first received optical signal emitted by the optical fiber 4000 reaches the first filter 2041 after being collimated by the collimating and focusing lens 3000. The first filter 2041 reflects the first received optical signal to the second filter 2042. The second filter 2042 transmits the optical signal of the fourth wavelength and reflects the optical signals of the other two wavelengths. The optical signal of the fourth wavelength enters the first optical receiver 2010 after being reflected by the fourth mirror 2044. The optical signals of the fifth wavelength and the sixth wavelength reach the third filter 2043 after being reflected by the fifth mirror 2045. The optical signal of the fifth wavelength enters the second optical receiver 2020b through the third filter 2043, and the optical signal of the sixth wavelength enters the third optical receiver 2030 after being reflected twice by the third filter 2043 and the sixth mirror 2046. In this setting mode, three optical receivers are used to receive optical signals of three different wavelengths, and there is no need to demultiplex the optical signals in the optical receiver, and the manufacturing process is simpler.

[0094] The following gives an example of the specific implementation manner of the optical transmitting module 1001:

[0095] As Figure 3AAs shown in the figure, the optical transmission component 1001a provided in the first embodiment of the present application adopts a three-in-one TO package. The optical transmission component 1001a includes a TO housing 1100 and internal components. The TO housing 1100 includes a header 1110, a cap 1140, an insulator 1120, and pins 1130. The pins 1130 are isolated from the header 1110 through the insulator 1120. The cap 1140 is provided with an opening, which is the light output port 1150. A cap lens 1151 is provided at the light output port 1150. Inside the optical transmission component 1001a, the following components are encapsulated: a thermoelectric cooler 1040, the hot surface of which is in contact with the header 1110, and a heat sink or heat dissipation block 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, which is used to emit a first optical signal. The first optical signal includes a first-wavelength optical signal and a second-wavelength optical signal; the second optical transmitter 1020 is a single-wavelength laser, which is used to emit a second optical signal. The second optical signal includes a third-wavelength optical signal; the first optical transmitter 1010 is mounted on a first heat sink 1051, and the second optical transmitter 1020 is mounted on a second heat sink 1052. Both the first heat sink 1051 and the second heat sink 1052 are mounted on the heat dissipation block 1060; in addition, a first optical lens group is also mounted on the heat dissipation block 1060, including a first multiplexer 1031a, which is used to multiplex the first optical signal and the second optical signal into a first transmitted optical signal. The first transmitted optical signal is emitted from the optical transmission component 1000 through the cap lens 1151.

[0096] Optionally, to ensure the stability of the optical signal, a backlight monitor is encapsulated inside the optical transmission component 1001a, and is fixed on the heat dissipation block 1060 or the thermoelectric cooler 1040. As Figure 3A shown, 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, and are respectively used to monitor the working conditions of the first optical transmitter 1010 and the second optical transmitter 1020.

[0097] Optionally, a thermistor 1080 is encapsulated inside the optical transmission component 1001a. As Figure 3A shown, the thermistor 1080 is fixed on the thermoelectric cooler 1040 and is used to monitor the temperature inside the TO housing 1100.

[0098] Those skilled in the art can understand that the first optical transmitter 1010 and the second optical transmitter 1020 can be mounted at different positions inside the TO housing 1100 according to needs.

[0099] Optionally, as Figure 3AAs shown, the emission optical path of the first optical transmitter 1010 is perpendicular to the light output port 1150. The emission optical path of the second optical transmitter 1020 is at a 90-degree angle to the emission optical path of the first optical transmitter 1010. The first optical signal and the second optical signal are combined into a first transmitted optical signal at the first multiplexer 1031a, and are emitted from the optical transmission component 1001a through the tube cap lens 1151.

[0100] Optionally, Figure 3B Another optical transmission component 1001b provided in the first embodiment of the present application has different arrangements of the first optical transmitter 1010 and the second optical transmitter 1020 compared with the optical transmission component 1001a. As Figure 3B shown, at this time, in addition to the first multiplexer 1031a, the first optical lens group further includes a first reflector 1032a. The first reflector 1032a reflects the second optical signal from the second optical transmitter 1020 to the first multiplexer 1031a, so that the second optical signal and the first optical signal from the first optical transmitter 1010 converge at the first multiplexer 1031a, and are combined into a first transmitted optical signal. The first transmitted optical signal is emitted from the optical transmission component 1001b through the tube cap lens 1151.

[0101] Optionally, as Figure 3B shown, in another optical transmission component 1001b provided in the first embodiment of the present application, the emission optical paths of the first optical transmitter 1010 and the second optical transmitter 1020 are at a 0-degree angle and are both perpendicular to the light output port 1150. The second optical signal is reflected by the first reflector 1032a to the first multiplexer 1031a, and is combined with the first optical signal into a first transmitted optical signal. The first transmitted optical signal is emitted from the optical transmission component 1001b through the tube cap lens 1151.

[0102] The above embodiments are all mounting methods in which the first optical transmitter 1010 and the second optical transmitter 1020 are vertically mounted on the same surface. At this time, 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 tube base. In addition to the vertical mounting on the same surface, there are also mounting methods such as flat mounting on the same surface and non-coplanar mounting for the first optical transmitter 1010 and the second optical transmitter 1020.

[0103] Optionally, Figure 3C Another optical transmission component 1001c provided in the first embodiment of the present application has the first optical transmitter 1010 and the second optical transmitter 1020 mounted in a flat manner on the same surface. As Figure 3CAs shown in the figure, the first optical transmitter 1010 and the second optical transmitter 1020 are respectively flatly attached to the first heat sink 1051 and the second heat sink 1052, and the second heat sink 1052 is mounted on the heat dissipation block 1060. In addition to the heat dissipation function, the heat dissipation block 1060 is also used to adjust the height of the second optical transmitter 1020 at this time. In this embodiment, the first optical lens group 1030 includes a first reflector 1032b and a first multiplexer 1031b. The first optical signal is reflected by the first reflector 1032b to the first multiplexer 1031b, and converges with the second optical signal at the first multiplexer 1031b, and is multiplexed into a first transmitted optical signal, which is emitted from the optical transmitter assembly 1001c through the cap lens 1151.

[0104] Optionally, Figure 3D Another optical transmitter assembly 1001d provided in the first embodiment of the present application, in which the first optical transmitter 1010 and the second optical transmitter 1020 are mounted in a non-coplanar manner. As Figure 3D shown in the figure, the first optical transmitter 1010 and the second optical transmitter 1020 are respectively located on two planes of the heat dissipation block 1060, and are respectively attached to the first heat sink 1051 and the second heat sink 1052. The first optical lens group includes a first multiplexer 1031b, and the first optical signal and the second optical signal are multiplexed into a first transmitted optical signal at the first multiplexer 1031b, and the first transmitted optical signal is emitted from the optical transmitter assembly 1001d through the cap lens 1151.

[0105] It is easy to understand that the mounting of the first optical transmitter 1010 and the second optical transmitter 1020 can have various arrangement forms, not limited to the co-planar vertical mounting, co-planar flat mounting and non-coplanar 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.

[0106] Optionally, Figure 3E Another optical transmitter assembly 1001e provided in the first embodiment of the present application, as Figure 3E shown in the figure, a cap flat window 1152 is provided at the light exit 1150 of the optical transmitter assembly 1001e. Since the cap flat window 1152 is a flat window lens and does not have a collimation function compared with the cap lens 1151, a first collimating lens 1033 and a second collimating lens 1034 are added inside the optical transmitter assembly 1001e, which are respectively used to collimate the first optical signal and the second optical signal. The collimated first optical signal and the second optical signal are multiplexed into a first transmitted optical signal at the first multiplexer 1031a, and are emitted from the optical transmitter assembly 1001e through the cap flat window 1152.

[0107] It is easy to understand that for any mounting method of the first optical transmitter 1010 and the second optical transmitter 1020, the light output port 1150 can be provided with a cap lens 1151 or a cap flat window 1152. The combination of the mounting method and the cap setting method is not unique.

[0108] When the optical performance difference between the two optical transmitters is large, in order to optimize the optical path layout and miniaturize the size, Embodiment 2 of the present application provides another implementation manner of the optical transceiver module. Figure 4 FIG. is a schematic structural diagram of an optical transceiver module provided by Embodiment 2 of the present application. The difference between this optical transceiver module and that of Embodiment 1 of the present application is that the first multiplexer 1031b and the first reflector 1032b are arranged outside the optical transmitter module 1002. It can be understood that the optical transceiver module provided by Embodiment 2 of the present application has some devices with the same structures and functions as those of the optical transceiver module provided by the above Embodiment 1, such as the optical receiver module and other related devices. The setting manners of such devices will not be described in detail hereinafter. Only the devices with differences will be described below.

[0109] As Figure 4 shown, the first multiplexer 1031b and the first reflector 1032b are arranged outside the optical transmitter module 1002. The first optical signal is emitted from the optical transmitter module 1002 through the first cap lens 1151a, and the second optical signal is emitted from the optical transmitter module 1002 through the second cap lens 1151b. The second optical signal is reflected by the first reflector 1032b to the first multiplexer 1031b, and is multiplexed with the first optical signal into a first transmitted optical signal at the first multiplexer 1031b.

[0110] Figure 5 FIG. is a schematic structural diagram of an optical transceiver module provided by Embodiment 3 of the present application. As Figure 5As shown, the optical transmission component uses a three-in-one BOX package. Compared with the coaxial tube structure of the TO package, the BOX package adopts a box structure. Generally speaking, the TO package is small in size and low in cost, while the BOX package has good reliability. The optical transmission component 1003 includes a first optical transmitter 1010, a second optical transmitter 1020, and a first optical lens group 1030. Among them, the first optical transmitter 1010 is a dual-wavelength laser, embedded with a single-chip dual-wavelength laser chip, which can simultaneously emit two different wavelengths of modulated optical signals, belonging to the chip-level two-in-one. The second optical transmitter 1020 is a single-wavelength laser, embedded with a single-chip single-wavelength laser chip. The optical receiving component 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 adopt two TO discrete packages. The optical transceiver component is connected to the optical fiber 4000, and a second optical lens group 2040, a collimating and focusing lens 3000, and an isolator 5000 are also provided in the optical transceiver component.

[0111] Optionally, the optical path of the optical transceiver component provided in the third embodiment of the present application is as Figure 6 shown by the solid and dashed arrows in. Among them, the second optical lens group 2040 includes a fourth mirror 2044, a fifth mirror 2045, and a Z-block component. The Z-block component includes a first filter 2041, a second filter 2042, a third filter 2043, and a transparent substrate 2049. The optical transmission path is as Figure 6 shown by the solid arrow in. 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 transmitted optical signal at the first optical lens group 1030, and the three-in-one first transmitted optical signal is emitted at the light output port 1150 of the optical transmission component 1003. The first transmitted optical signal passes through the isolator 5000, is transmitted through the first filter 2041 of the Z-block component, and is coupled into the optical fiber 4000 after being focused by the collimating and focusing lens 3000. The optical receiving path is as Figure 6 shown by the dashed arrow in. The first received optical signal emitted by the optical fiber 4000 reaches the Z-block component after being collimated by the collimating and focusing lens 3000. The first filter 2041 of the Z-block component 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 mirror 2044 to the first optical receiver 2010, and the other two-wavelength optical signals are transmitted through the third filter 2043 and reflected by the fifth mirror 2045 into the second optical receiver 2020a.

[0112] Specifically, the reflecting surface of the z-block component can adopt a design of attaching a filter (band-stop) or directly plating a reflective film on the end face; the transmitting surface can adopt a design of attaching a filter (band-pass) or plating an antireflection film.

[0113] The following is an example of the specific implementation of the optical transmission component 1003:

[0114] It can be understood that the optical transmission component 1003 provided in the third embodiment of the present application may also be encapsulated with devices having the same structure and function as those in the optical transmission component 1001 provided in the first embodiment above, such as heat dissipation devices such as a thermoelectric cooler, a heat sink, and a heat dissipation block, as well as monitoring devices such as a backlight monitor and a thermistor. The setting methods of such devices will not be elaborated herein.

[0115] In the optical transmission component 1003 provided in the third embodiment of the present application, the first optical transmitter 1010 and the second optical transmitter 1020 can have various arrangement forms, and can be arranged in parallel side by side, perpendicular to each other, or at a certain angle. The following introduces different implementation manners. As Figure 7A shown, an optical transmission component 1003a provided in the third embodiment of the present application adopts a BOX package. The optical transmission component 1003a includes a BOX housing 1101 and internal devices. The BOX housing 1101 includes a base and a cover plate covering the base. The optical device is mounted inside the base, and a light outlet 1150 is provided on the cover plate, and a flat window lens, that is, a BOX flat window 1153, is provided at the light outlet 1150. Inside the BOX housing 1101, there are encapsulated: a first optical transmitter 1010, a dual-wavelength laser for emitting 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 emitting a second optical signal, including a third-wavelength optical signal; a first optical lens group 1030 includes a first multiplexer 1031b and a first reflector 1032b, as well as 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 multiplexer 1031b. The second optical signal is collimated by the second collimating lens 1034 and reflected by the first reflector 1032b and then reaches the first multiplexer 1031b. The first multiplexer 1031b transmits the first optical signal and reflects the second optical signal. The first optical signal and the second optical signal converge into a first transmitted optical signal at the first multiplexer 1031b and are emitted from the optical transmission component 1003a through the BOX flat window 1153.

[0116] Optionally, Figure 7B Another optical transmission component 1003b provided in the third embodiment of the present application is, as Figure 7BAs shown, the emission optical paths of the first optical transmitter 1010 and the second optical transmitter 1020 are perpendicular to each other at 90 degrees. The first optical signal reaches the first multiplexer 1031b after being collimated by the first collimating lens 1033, and the second optical signal reaches the first multiplexer 1031b after being collimated by the second collimating lens 1034. The first multiplexer 1031b transmits the first optical signal and reflects the second optical signal. The first optical signal and the second optical signal are multiplexed into the first transmitted optical signal at the first multiplexer 1031b and are emitted from the optical transmission module 1003b through the BOX flat window 1153. In this arrangement, there is only one reflection of the optical path, which is beneficial to reducing the loss of the optical path.

[0117] Optionally, Figure 7C Another optical transmission module 1003c provided in the third embodiment of the present application is shown in Figure 7C As shown, the first optical transmitter 1010 and the second optical transmitter 1020 are placed laterally 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 mirror 1032b to the first multiplexer 1031b. The first optical signal reaches the first multiplexer 1031b after being collimated by the first collimating lens 1033. The first multiplexer 1031b transmits the second optical signal and reflects the first optical signal. The first optical signal and the second optical signal are multiplexed into the first transmitted optical signal at the first multiplexer 1031b and finally emitted from the optical transmission module 1003c through the BOX flat window 1153. In this arrangement, the first optical signal and the second optical signal have an eccentric optical path, and the lateral placement is beneficial to saving length and reducing the packaging volume of the BOX.

[0118] Optionally, Figure 7D Another optical transmission module 1003d provided in the third embodiment of the present application is shown in Figure 7D As shown, the first optical transmitter 1010 and the second optical transmitter 1020 are placed laterally and on two symmetric sides inside the BOX housing 1101. The second optical signal is collimated by the second collimating lens 1034 and reflected by the first mirror 1032b to the first multiplexer 1031b. The first optical signal reaches the first multiplexer 1031b after being collimated by the first collimating lens 1033. The first multiplexer 1031b transmits the second optical signal and reflects the first optical signal. The first optical signal and the second optical signal are multiplexed into the first transmitted optical signal at the first multiplexer 1031b, and the first transmitted optical signal is finally emitted from the optical transmission module 1003d through the BOX flat window 1153. In this arrangement, the first optical signal and the second optical signal have a symmetric optical path, and the lateral placement is beneficial to saving length and reducing the packaging volume of the BOX.

[0119] Optionally, Figure 7E Another optical transmission module 1003e provided in the third embodiment of the present application is shown in Figure 7EAs shown, the isolator 5000 in the optical transceiver component is replaced with two separate isolators and built into the triple-transmission BOX housing 1101. The first optical lens group 1030 includes: a first multiplexer 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 on the optical path between the first optical transmitter 1010 and the BOX flat window 1153, and the second isolator is located on the optical path between the second optical transmitter 1020 and the BOX flat window 1153. The first optical signal reaches the first reflector 1032b via the first collimating lens 1033 and the first isolator 1037, and after being reflected by the first reflector 1032b, it reaches the first multiplexer 1031b. After being collimated by the second collimating lens 1034, the second optical signal reaches the second isolator 1038 after being reflected twice by the second reflector 1035b and the third reflector 1036b, and reaches the first multiplexer 1031b via the second isolator 1038. The first multiplexer 1031b transmits the second optical signal and reflects the first optical signal. The first optical signal and the second optical signal are multiplexed into a first transmitted optical signal at the first multiplexer 1031b, and the first transmitted optical signal is emitted from the optical transmitter component 1003e through the BOX flat window 1153.

[0120] The optical transceiver component provided in the fourth embodiment of the present application adopts a transceiver-integrated BOX packaging structure. 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 housing 1101, and the entire optical transceiver path is realized through a series of mounting and coupling. Figure 8A It is a schematic structural diagram of an optical transceiver component provided in the fourth embodiment of the present application, as Figure 8AAs shown, the first optical lens group 1030 includes a first multiplexer 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 collimation 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. The first collimation assembly 2047 includes at least three collimating lenses, which are respectively used for collimating the fourth-wavelength optical signal, the fifth-wavelength optical signal, and the sixth-wavelength optical signal. Inside the BOX housing 1101, a first reflection assembly 2050 and a guiding assembly are also encapsulated. The first reflection assembly 2050 includes at least three reflectors, which are respectively used for reflecting 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. The guiding assembly includes two reflectors, namely 2060a and 2060b, which are used for guiding the first received optical signal reflected by the first filter 2041 to the second filter 2042.

[0121] It can be understood that the optical transceiver component provided in the fourth embodiment of the present application is also encapsulated with devices having the same structure and function as those in the optical transceiver component provided in the first embodiment above, such as the related devices of the optical transmission component, including heat dissipation devices such as a thermoelectric cooler, a heat sink, and a heat dissipation block, as well as monitoring devices such as a backlight monitor and a thermistor. The setting methods of such devices will not be described in detail.

[0122] The optical path of the optical transceiver component provided in the fourth embodiment of the present application is as Figure 8A shown by the solid and dashed arrows in. The optical transmission path is as Figure 8A shown by the solid arrow in. The emission optical paths of the first optical transmitter 1010 and the second optical transmitter 1020 are parallel. The first optical signal reaches the first multiplexer 1031b after being collimated by the first collimating lens 1033. The second optical signal is collimated by the second collimating lens 1034 and reflected by the first reflector 1032b to the first multiplexer 1031b. The first multiplexer 1031b transmits the second optical signal and reflects the first optical signal. The first optical signal and the second optical signal are multiplexed into a first transmitted optical signal at the first multiplexer 1031b. The first transmitted optical signal passes through the first filter 2041 and is emitted from the BOX flat window 1153 of the optical transceiver component into the optical fiber 4000. The optical reception path is as Figure 8AAs shown by the dashed arrow in the figure, the first received optical signal is emitted from the optical fiber 4000, reaches the first filter 2041 after passing through the BOX flat window 1153. The first filter 2041 reflects the first received optical signal to the guiding component. After being reflected by the guiding components 2060a and 2060b, the first received optical signal reaches the second filter 2042. The second filter 2042 transmits the optical signal of the fourth wavelength and reflects the optical signals of the other two wavelengths. The optical signal of the fourth wavelength is collimated by the first collimating component 2047 in sequence, reflected by the first reflecting component 2050, and then enters the first optical receiver 2010. The optical signals of the other two wavelengths are reflected by the fifth mirror 2045 and reach the third filter 2043. The optical signal of the fifth wavelength is transmitted by the third filter 2043, collimated by the first collimating component 2047 in sequence, reflected by the first reflecting component 2050, and then enters the second optical receiver 2020b. The optical signal of the sixth wavelength is reflected twice by the third filter 2043 and the sixth mirror 2046, reaches the fourth filter 2048, and then enters the third optical receiver 2030 after being transmitted by the fourth filter 2048, collimated by the first collimating component 2047, and reflected by the first reflecting component 2050 in sequence.

[0123] Optionally, the first optical transmitter 1010 and the second optical transmitter 1020 in the optical transceiver module can be arranged parallel to each other side by side, perpendicular to each other, or at a certain angle, not limited to the ways listed in the embodiments. Figure 8B It is a schematic structural diagram of another optical transceiver module provided by Embodiment 4 of the present application. As Figure 8B shown, the emission optical paths of the first optical transmitter 1010 and the second optical transmitter 1020 form a certain angle and converge at the first multiplexer 1031a. In particular, the emission optical paths of the first optical transmitter 1010 and the second optical transmitter 1020 are perpendicular to each other at 90 degrees. The optical transmission path is as Figure 8B shown by the solid arrow in the figure. The first optical signal is collimated by the first collimating lens 1033 and then reaches the first multiplexer 1031a. The second optical signal is collimated by the second collimating lens 1034 and then reaches the first multiplexer 1031a. The first multiplexer 1031a transmits the first optical signal and reflects the second optical signal. The first optical signal and the second optical signal are multiplexed into the first transmitted optical signal at the first multiplexer 1031a. The first transmitted optical signal passes through the BOX flat window 1153 and is emitted from the optical transceiver module after being transmitted by the first filter 2041. The optical reception path is the same as the corresponding optical path in Figure 8A and will not be elaborated here.

[0124] Optionally, in addition to using the Z-block component, the second optical lens group 2040 in the optical transceiver module can also use discrete filter plates for beam splitting. Figure 8C It is a schematic structural diagram of another optical transceiver module provided by Embodiment 4 of the present application. As Figure 8CAs shown, the second optical lens group 2040 includes a discrete filter and a first collimation assembly 2047. The discrete filter includes a first filter 2041, a second filter 2042, a third filter 2043, and a sixth mirror 2046. The first collimation assembly 2047 includes at least three collimation lenses, such as Figure 8C 2047a, 2047b, and 2047c shown, which are respectively used to collimate the fourth-wavelength optical signal, the fifth-wavelength optical signal, and the sixth-wavelength optical signal. A first reflection assembly 2050 is also encapsulated inside the BOX housing 1101, including at least three mirrors, such as Figure 8C 2050a, 2050b, and 2050c shown, which are respectively 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. The optical reception path is as shown by the dashed arrow in Figure 8C . The first received optical signal enters the optical transceiver module and reaches the first filter 2041, and is reflected by the guiding assemblies 2060a and 2060b 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 collimation assembly 2047a and reflected by the first reflection assembly 2050a 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 collimation assembly 2047b, and is collimated by the first collimation assembly 2047b and reflected by the first reflection assembly 2050b to reach the second optical receiver 2020b. The sixth-wavelength optical signal passes through the third filter 2043 and is reflected by the sixth mirror 2046 to reach the first collimation assembly 1047c, and enters the third optical receiver 2030 after being collimated by the first collimation assembly 1047c and reflected by the first reflection assembly 2050c. The optical transmission path is the same as the Figure 8A corresponding optical path and will not be elaborated here.

[0125] Optionally, the guiding assembly includes one or more mirrors, not limited to the Figure 8A - Figure 8C enumerated setting methods. For example, Figure 8D is a schematic structural diagram of another optical transceiver module provided in the fourth embodiment of the present application. As shown in Figure 8D , the guiding assembly includes a mirror 2060b, which is used to guide the first transmitted optical signal to the first filter 2041.

[0126] It is easy to understand that in the transceiver integrated BOX-packaged optical transceiver module provided in the fourth embodiment of the present application, the setting methods of the transmitting end module and the receiving end module are not limited to the content enumerated in this embodiment, and the combination methods of different settings of the transmitting end and the receiving end are not unique.

[0127] Embodiments 1 to 4 of the present application provide an optical transmission component including a single-chip dual-wavelength laser and a single-chip single-wavelength laser, and an optical transceiver component that realizes three transmit and three receive based on this. Hereinafter, Embodiments 5 to 7 of the present application provide an optical transmission component that only includes a single-chip dual-wavelength laser, and an optical transceiver component that realizes dual transmit and dual receive based on this, which can achieve 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 components provided in Embodiments 5-7 of the present application are also encapsulated with devices having the same structure and function as those in the optical transceiver components provided in Embodiments 1-4 of the above, and the setting methods of such devices will not be elaborated.

[0128] The optical transmission components in Embodiments 5 to 7 of the present application all include only a single-chip dual-wavelength laser, which can simultaneously emit two different wavelength modulated optical signals, belonging to the chip-level dual-transmission integration. In the dual-transmit and dual-receive devices in the prior art, either two independent optical transmitters are used, or an optical transmitter including two laser chips is used, resulting in high implementation costs and low packaging efficiency. However, the solutions in Embodiments 5 to 7 of the present application can achieve the effects of reducing the device size, lowering the device cost, and improving the packaging efficiency.

[0129] Figure 9A It is a schematic structural diagram of an optical transceiver component capable of realizing dual transmit and dual receive provided in Embodiment 5 of the present application, as Figure 9A shown, including an optical transmission component 1005, an optical reception component, and a second optical lens group 2040. The optical transmission component 1005 adopts a dual-transmission integration TO package. The optical transmission component emits a first transmission optical signal, and the first transmission optical signal includes a first wavelength optical signal and a second wavelength optical signal. The optical reception component includes a first optical receiver 2010 and a second optical receiver 2020b. Both the first optical receiver 2010 and the second optical receiver 2020b are single-wavelength receivers, and two different TO discrete packages are adopted. 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 scheme, including a first filter 2041, a fourth reflector 2044, and a fifth reflector 2045.

[0130] The optical path in the optical transceiver component provided in Embodiment 5 of the present application is as Figure 9A shown by the arrow in. The optical transmission path is as Figure 9A shown by the solid arrow in. The dual-transmission integration first transmission optical signal is emitted from the optical transmission component, and the first transmission optical signal sequentially passes through the fourth reflector 2044 and the first filter 2041, and is coupled into the optical fiber 4000 after being converged by the collimating and focusing lens 3000. The optical reception path is as Figure 9AAs shown by the dashed arrow in the figure, the first received optical signal emitted by the optical fiber 4000 reaches the first filter 2041 after being collimated by the collimating and focusing lens 3000. The first filter 2041 transmits the optical signal of the fourth wavelength and reflects the optical signal of the fifth wavelength. The optical signal of the fourth wavelength enters the first optical receiver 2010 after being reflected by the fourth mirror 2044. The optical signal of the fifth wavelength enters the second optical receiver 2020b after being reflected by the first filter 2041 and the fifth mirror 2045 in sequence.

[0131] Optionally, as Figure 9B shown, a dual-wavelength optical receiver is used instead of two discrete single-wavelength optical receivers, that is, the second optical receiver 2020a receives the first received optical signal including the optical signals of the fourth wavelength and the fifth wavelength, and the second optical lens group 2040 includes the fourth mirror 2044. The optical transmission path is as Figure 9B shown by the solid arrow in the figure. The first transmitted optical signal that combines two transmissions is emitted by the optical transmission component. The first transmitted optical signal passes through the fourth mirror 2044 by transmission, and is coupled into the optical fiber 4000 after being focused by the collimating and focusing lens 3000. The optical reception path is as Figure 9B shown by the dashed arrow in the figure. The first received optical signal emitted by the optical fiber 4000 reaches the fourth mirror 2044 after being collimated by the collimating and focusing lens 3000, and the fourth mirror 2044 reflects the first received optical signal to the second optical receiver 2020a.

[0132] Optionally, as Figure 9C shown, the collimating and focusing lens 3000 is moved to the optical path between the optical transmission component 1005 and the fourth mirror 2044, so that the first transmitted optical signal first becomes convergent light after passing through the collimating and focusing lens 3000, and then is coupled into the optical fiber by transmission through the fourth mirror 2044. Compared with the Figure 9B scheme, the device size of the optical transceiver component is smaller at this time.

[0133] The following gives an example of the specific implementation method of the optical transmission component 1005:

[0134] As Figure 10AAs shown in the figure, the optical transmission component provided in the fifth embodiment of the present application adopts a dual-transmission integrated TO package. The optical transmission component 1005a includes a TO housing 1100 and internal components. The TO housing 1100 includes a header 1110, a cap 1140, an insulator 1120, and pins 1130. The pins 1130 are isolated from the header 1110 by the insulator 1120. An optical output port 1150 is provided on the cap 1140, and a cap lens 1151 is provided at the optical output port 1150. The following components are internally encapsulated in the optical transmission component 1005a: a thermoelectric cooler 1040, the hot surface of which is in contact with the header 1110, and a heat sink or heat dissipation block 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 emitting a first optical signal, and the first optical signal 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, and the first heat sink 1051 is mounted on the heat dissipation block 1060; the first transmitted optical signal is emitted from the optical transmission component 1005a through the cap lens 1151.

[0135] Further, as Figure 10B shown, another optical transmission component 1005b provided in the fifth embodiment of the present application. The first optical transmitter 1010 is flat-mounted on the first heat sink 1051. A first reflector 1032b is provided in the optical transmission component 1005b to reflect the first transmitted optical signal from the first optical transmitter 1010 to the cap lens 1151, and the first transmitted optical signal is emitted from the optical transmission component 1005b through the cap lens 1151.

[0136] Optionally, the emission optical path of the first optical transmitter 1010 is perpendicular to the optical output port 1150, and the first transmitted optical signal is vertically emitted from the optical transmission component 1005b through the cap lens 1151; or the first transmitted optical signal is perpendicular to the optical output port 1150 after being reflected by the first reflector 1032b and is vertically emitted from the optical transmission component 1005b through the cap lens 1151.

[0137] Optionally, as Figure 10C shown, another optical transmission component 1005c provided in the fifth embodiment of the present application. A cap flat window 1152 is provided at the optical output port 1150. At this time, in the optical transmission component 1005c, a first collimating lens 1033 is added to the emission optical path of the first transmitted optical signal to collimate the first transmitted optical signal. Alternatively, a collimating reflector lens is used to replace the functions of the first collimating lens 1033 and the first reflector 1032b.

[0138] As Figure 11As shown in the figure, it is a schematic structural diagram of the optical transceiver module provided in the sixth embodiment of the present application. The difference from the fifth embodiment of the present application is that the first transmitted optical signal transmitted by the optical transmission module 1006 is a converging optical signal, and the first transmitted optical signal directly enters the optical fiber 4000 after passing through the fourth mirror 2044. At this time, the device size of the optical transceiver module is smaller.

[0139] As Figure 12 shown in the figure, it is a schematic structural diagram of the optical transceiver module provided in the seventh embodiment of the present application. The difference from the fifth embodiment of the present application is that the optical transmission module 1007 emits two collimated optical signals, and the first multiplexer 1031a and the second mirror 1035 are arranged outside the optical transmission module 1007 to multiplex the two collimated optical signals into the first transmitted optical signal.

[0140] The following is an example of the specific implementation method of the optical transmission module 1007:

[0141] As Figure 13 shown in the figure, the difference between the optical transmission module provided in the seventh embodiment of the present application and the fifth embodiment is that a first demultiplexer 1039 is additionally provided in the first optical lens group 1030 in the optical transmission module 1007 to demultiplex the first transmitted optical signal into a first wavelength optical signal and a second wavelength optical signal, and the two light beams are emitted from the optical transmission module 1007.

[0142] The optical transmission module provided in the seventh embodiment of the present application is as Figure 13 shown in the figure. The light outlet 1150 is a flat window 1152 of the ferrule. The first optical transmitter 1010 is vertically attached to the first heat sink 1051, and the first heat sink 1051 is vertically attached to the heat dissipation block 1060. Inside the optical transmission module 1007, a collimating lens 1033 and a first demultiplexer 1039 are sequentially arranged along the emission optical path of the first transmitted optical signal. The first optical transmitter 1010 emits the first transmitted optical signal, which enters the first demultiplexer 1039 after being collimated by the collimating lens 1033. The first demultiplexer 1039 transmits the first wavelength optical signal and reflects the second wavelength optical signal. The first wavelength optical signal is transmitted by the first demultiplexer 1039 to the flat window 1152 of the ferrule and then emitted from the optical transmission module 1007. The second wavelength optical signal is emitted from the optical transmission module 1007 to the flat window 1152 of the ferrule after being reflected twice by the first demultiplexer 1039 and the first mirror 1032.

[0143] Optionally, a collimating and reflecting lens is used to replace the functions of the first collimating lens 1033 and the first demultiplexer 1039, that is, to simultaneously collimate and demultiplex the first transmitted optical signal.

[0144] In the fifth to seventh embodiments of the present application, the optical transmission component is not limited to the packaging method of the coaxial tube shell TO, and other packaging methods such as BOX packaging can also be adopted. For the TO packaging method, a tube cap lens 1151 or a tube cap flat window 1152 can be set at the light output port 1150. For the BOX packaging method, a BOX flat window 1153 can be set at the light output port 1150. In addition, the position setting of the first optical transmitter 1010 in the optical transmission component is not limited to the manner listed in the embodiments.

[0145] It can be understood that the optical transceiver components formed by arranging and combining any optical receiving component and any optical transmission component in any of the above embodiments are all within the protection scope of the present application.

[0146] It should be noted that the multiplexer described in the first to seventh embodiments of the present application can be an optical device such as a filter, a prism, a mirror, or a MUX multiplexer that can realize the multiplexing function. For example, the first multiplexer a in the embodiment is a filter, and the first multiplexer b is a prism, both of which can realize the multiplexing function. The mirror can be an optical device such as a filter, a prism, or a mirror that realizes the reflection function. The filter can be an optical device such as a filter, a prism, or an optical waveguide PLC that realizes the filtering function. It is not limited to the implementation devices mentioned in the embodiments.

[0147] Electrically connecting the optical transceiver component in any of the above embodiments to the peripheral electronic components, or electrically connecting the optical transmission component in any of the above embodiments to the peripheral electronic components, and then installing them in the optical module housing constitutes an optical module.

[0148] The embodiment of the present application also provides an optical line terminal, including the above optical module. It can be understood that connecting the above optical module to a single board and placing it in a chassis constitutes an optical line terminal.

[0149] The embodiment of the present application also provides a passive optical network system, including the above optical line terminal, an optical distribution network, and a plurality of optical network units.

[0150] Figure 14 It is a schematic structural diagram of the passive optical network system provided by the embodiment of the present application. As Figure 14 shown, it includes:

[0151] An optical line terminal 310, and an optical module 300 is provided in the optical line terminal 310;

[0152] An optical distribution network 320, and the optical distribution network 320 is connected to the optical line terminal 310;

[0153] A plurality of optical network units 330, and the plurality of optical network units 330 are connected to the optical distribution network 320,

[0154] Among the multiple optical network units 330, there are ONUs supporting 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 some other optical network units are 50G PON optical modules. Those skilled in the art can understand that the present application does not limit the specific generation standards. 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 generation PON standards that may appear in the future.

[0155] The optical line terminal 310 and the passive optical network system provided by the embodiments of the present application. The optical module 300 can realize the demultiplexing reception of the upstream optical signal and the multiplexing transmission of the downstream optical signal.

[0156] In the description of this specification, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0157] As mentioned above, the above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope 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 simultaneously disposed on 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 configured 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 configured 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, wherein 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 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 transmission 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 for collimating 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 disposed 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 transmitting component, characterized in that, It includes a housing provided with a light-emitting port, and a first optical transmitter is encapsulated inside 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 light-emitting port.

13. The optical transmission component according to claim 12, characterized in that, A first reflection assembly is disposed 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 light-emitting port so that the first transmitted optical signal is emitted from the housing through the light-emitting port.

14. The optical transmission component according to claim 12 or 13, characterized in that, A wavelength division element is disposed 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. A wavelength combination 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 wavelength combination element. After the second-wavelength optical signal is emitted from the housing, it is combined with the first-wavelength optical signal by the wavelength combination element to form 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 wavelength combination element. After the first-wavelength optical signal is emitted from the housing, it is combined with the second-wavelength optical signal by the wavelength combination element to form a first transmitted optical signal.

15. 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. 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, characterized in that, The optical reception 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. 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. 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. 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, characterized in that, 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.

Images