WO2023040536A1 - Single-fiber multi-directional optical transceiver and optical module - Google Patents

Abstract

A single-fiber multi-directional optical transceiver, comprising an optical port; a light emitting module comprising at least two light emitters (13); a detection module comprising at least two detectors; a combination lens group (10), configured to converge light emission signals emitted from the light emitters (13), wherein the light emission signals are converged and then emitted to the optical port; a separating lens group (20), configured to separate light receiving signals entering from the optical port, and reflect the light receiving signals to corresponding detectors; and a circuit processing unit, communicationally connected to both the light emitting module and the detection module. Also provided is an optical module comprising the single-fiber multi-directional optical transceiver.

Description

A single-fiber multi-directional optical transceiver device and optical module

Cross References to Related Applications

This application is based on a Chinese patent application with application number 202111084111.1 and a filing date of September 14, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The present application relates to the technical field of optical fiber communication, in particular to a single-fiber multi-directional optical transceiver device and an optical module.

Background technique

With the rapid development of 5G, people's requirements for bandwidth are getting higher and higher, and fiber resources are getting tighter and tighter. Single-fiber multi-directional optical transceivers are favored by customers as a laying solution that can save half of the fiber. One-fiber multi-wavelength 10Gbps low-rate optical transceivers such as the single-fiber four-way small SFP+10G COMBO PON OLT optical module of the TO solution are very popular in the market. However, there is still a need for a single-fiber multi-directional optical transceiver device and optical module to achieve miniaturized packaging.

Contents of the invention

Embodiments of the present application provide a single-fiber multi-directional optical transceiver device and an optical module.

The embodiment of the first aspect of the present application provides a single-fiber multi-directional optical transceiver, including: an optical port, the optical port is used to install a single-port optical fiber; a light emitting module, the light emitting module includes at least two light emitters, each The light emitters are arranged in parallel and at intervals, and the light output direction of the light emitters is along the first direction; a detection module, the detection module includes at least two detectors, and each of the detectors is arranged at intervals along the second direction; a combination mirror group , the wave-combining mirror group is set to converge the light emission signals emitted from each of the light emitters, and the light emission signals are converged and directed to the optical port; The receiving signal can be directed to the wave splitting mirror group, and the wave splitting mirror group is configured to separate each of the light receiving signals entering from the optical port, and reflect each of the light receiving signals to the corresponding detection device; a circuit processing unit, and the circuit processing unit is communicatively connected to both the light emitting module and the detection module.

The embodiment of the second aspect of the present application also provides an optical module, including the single-fiber multi-directional optical transceiver device according to the embodiment of the first aspect.

Additional features and advantages of the application will be set forth in the description which follows, and, in part, will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

The accompanying drawings are used to provide a further understanding of the technical solution of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical solution of the present application, and do not constitute a limitation to the technical solution of the present application.

Fig. 1 is the schematic diagram of the transceiver device in the known technology;

Figure 2 is a schematic diagram of adding a TEC temperature control function to the transmitting unit in the known technology

Fig. 3 is a schematic diagram of a transceiver device with three transmissions and three receptions in the known technology;

Fig. 4 is the schematic diagram of the transceiver device of two optical ports in the known technology;

Fig. 5 is the circuit connection diagram of the transceiver device of two optical ports in the known technology;

6 is a schematic diagram of the circuit connection of the photoelectric conversion frame in this embodiment;

Fig. 7 is a front view of an implementation mode of the single-fiber multi-directional optical transceiver device in this embodiment when three receptions and three transmissions are performed;

Fig. 8 is a schematic diagram of an implementation mode of the single-fiber multi-directional optical transceiver device in this embodiment when two transmissions and two receptions are performed;

Fig. 9 is a schematic diagram of the wave combining mirror group in the embodiment shown in Fig. 8;

Fig. 10 is a schematic diagram of the wave splitting mirror group in the embodiment shown in Fig. 8;

Fig. 11 is a schematic diagram of another implementation mode of the single-fiber multi-directional optical transceiver device in this embodiment when three receptions and three transmissions are performed;

Figure 12 is a front view of the embodiment shown in Figure 11;

Fig. 13 is a schematic diagram of the wave combining mirror group in the embodiment shown in Fig. 11;

Fig. 14 is a schematic diagram of the wave splitting mirror group in the embodiment shown in Fig. 11

Fig. 15 is a schematic diagram of another embodiment of the multiplexing mirror group when the single-fiber multi-directional optical transceiver device in this embodiment receives three times and sends three times;

Fig. 16 is a schematic diagram of another embodiment of the three-receive and three-transmit time-division mirror group of the single-fiber multi-directional optical transceiver device in this embodiment.

Detailed ways

This part will describe the embodiments of the application in detail. Several embodiments of the application are shown in the accompanying drawings. Each technical feature and the overall technical solution, but they should not be construed as limiting the protection scope of this application.

In the description of the present application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present application and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, several means one or more, and multiple means two or more. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features relation.

In the description of this application, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the meaning of the above words in this application in combination with the content of the technical solution.

With the rapid development of 5G, people's requirements for bandwidth are getting higher and higher, and fiber resources are getting tighter and tighter. Single-fiber multi-directional optical transceivers are favored by customers as a laying solution that can save half of the fiber. One-fiber multi-wavelength 10Gbps low-rate optical transceivers such as the single-fiber four-way small SFP+10G COMBO PON OLT optical module of the TO solution are very popular in the market. However, referring to Figure 1, in the transceiver device in some cases, the 10G rate downlink transmitting unit is usually equipped with a thermoelectric cooler (Thermo Electric Cooler, TEC) temperature control function, and the 2.5G rate downlink transmitting unit does not have a laser temperature control unit. , in this case the feasible length dimension of the transceiver device is A, and the standard limited width dimension is B. If the 2.5G rate downlink transmission unit is upgraded to a 50G rate transmission unit on the basis of the above structure, the TEC temperature control function needs to be added. Referring to Figure 2, the 50G rate TO-CAN will increase the height dimension and increase the width of the transceiver. The width of the transceiver exceeds Dimension b makes it impossible to meet SFP+. And, referring to Fig. 3, if adding a pair of wavelengths to the above-mentioned structure to realize the functions of three transmissions and three receptions, it is necessary to add a transmitter unit TO-CAN and a receiver unit TO-CAN, so that on the basis of the current very long size Further exceeding the limit, the width will also exceed dimension b.

In addition, referring to Figure 4 and Figure 5, most of the optical modules currently on the market that implement a two-transmission and two-reception structure use a one-transmit-one-receive two-port structure or an external circulator or wavelength division multiplexing (Wavelength Division Multiplexing, WDM) optical fiber coil is completed in the transceiver device. This structure has the following disadvantages: the transmitting unit and the receiving unit need two optical ports to complete, and the transmitting unit has been attached with a WDM prism combining prism group, and the combined optical signal is output from one optical port. The receiving unit inputs the optical wavelength signal from another optical port with a demultiplexing prism group to complete the demultiplexing. If this structure is to complete the single-fiber transceiver, a WDM multiplexer and demultiplexer group needs to be placed at the two optical ports. Not only is the structure complex, but also the optical fiber needs to be coiled in the device, and the process requirements are also improved.

In view of this, an embodiment of the present application provides a single-fiber multi-directional optical transceiver, including an optical port, a light emitting module, a detection module, a wave combining mirror group 10, a wave splitting mirror group 20 and a circuit processing unit. The circuit processing unit is communicatively connected with the light-emitting module and the detection module to control the conversion of the photoelectric signal or the uplink and downlink transmission.

The optical port is correspondingly formed with an optical channel. The light transmitting signal is combined by the wave combining mirror group 10 and then directed to the optical port along the optical channel. The wave combining mirror group 10 and the wave splitting mirror group 20 in this embodiment constitute an optical module, hereinafter referred to as this module; the single-fiber multi-directional optical transceiver device in this embodiment, hereinafter referred to as this device. In this application, the optical path refers to the propagation path in space when the light emitted by the optical fiber fixed at the optical port enters the device through the optical port and does not pass through the wave combining mirror group 10 and the wave splitting mirror group 20 . Obviously, the optical channel need not be formed by a specific physical structure.

The wave-splitting mirror group 20 and the wave-combining mirror group 10 are arranged in sequence along the direction away from the optical port, that is, the light receiving signal entering from the optical port is split after being directed to the wave-splitting mirror group 20, and will not be directed to the multiplexer. mirror group 10; and the emitted light signal from the light-emitting module is transmitted through the wave-splitting mirror group 20 after being combined, and then directed to the optical port. It can be understood that the wave splitting mirror group 20 will not affect the propagation of the light beam formed by converging the transmitted optical signal.

The light emitting module includes at least two light emitters 13 , and it is easy to understand that the light emission signals emitted by each light emitter 13 have different wavelengths. The light emitters can be lasers. In one embodiment, each light emitter can be provided with a collimator lens 14 at the light exit respectively, and the collimator lens 14 can make the light energy emitted by the light emitter 13 form a collimated light column and enter the module, so as to ensure that the light emission signal is transmitted in the module. The propagation path in the group is clear and precise. Each light emitter 13 sends light emission signals of different wavelengths to the wave combining mirror group 10, and the wave combining mirror group 10 is set to converge the light emission signals sent from each light emitter, and after the light emission signals are converged, they can be directed to the optical port along the optical path channel , the optical fiber at the optical port can transmit all optical transmission signals of different wavelengths outward.

The detecting module includes at least two detectors, and each detector is set to receive light-receiving signals of different wavelengths. The light receiving signal sent from the optical port can enter the wave splitting mirror group 20 along the optical path. The optical port itself does not send out the light receiving signal, but the light receiving signal reaches the optical port through the optical fiber, and enters the device from the optical port. The wave splitting mirror group 20 is configured to separate the received light signals entering from the optical port, and reflect the received light signals to corresponding detectors. In one embodiment, each detector can be provided with a converging lens 23 at the receiving place, and the received light signal can be converged on the main optical axis after passing through the converging lens 23, so that the detector can fully collect the light quantity of the received light signal.

In one embodiment, the light emitters are arranged in parallel and at intervals, and the detectors are arranged at intervals. Since the light emitter and the detector are arranged at intervals, it is convenient to install the light emitter 13 and the detector. It can be understood that all the turning light paths corresponding to the optical ports may be perpendicular to the first direction, or may not be perpendicular to the first direction. Referring to FIG. 7 , the light emitters are arranged at intervals along the first direction, and the detectors are arranged at intervals along the second direction. Since the three light emitters 13 are arranged side by side, on the basis that one of the light emitters 13 already has a temperature control unit, even if the remaining light emitters 13 are provided with a temperature control unit, the number of light emitters 13 with a large thickness will not increase. Increasing and further increasing the width of the device is beneficial to the realization of miniaturized packaging. Understandably, the first direction is parallel to the second direction, thereby reducing the width of the device and effectively improving space utilization.

In one embodiment, the multiplexer mirror group 10 includes at least two multiplexer mirrors arranged along the first direction, the number of multiplexer mirrors is the same as that of the light emitters, and the positions of the multiplexer mirrors and the light emitters correspond one-to-one . The wave combining mirror is divided into at least two first wave combining mirrors 11 and one second wave combining mirror 12 . The second multiplex mirror 12 has a converging place located in the optical path channel, each first multiplex mirror 11 can reflect the corresponding optical transmission signal to the converging place, and the second multiplex mirror 12 can transmit the corresponding optical transmission signal to the converging place. After all the optical transmission signals converge at the convergence point, they can be sent to the optical port along the optical path. At least two wave combining mirrors are arranged along the first direction.

In some embodiments, referring to FIG. 15 , each wave combining mirror is a filter with specific reflection and transmission characteristics, and the wave combining mirrors are arranged at intervals and parallel to each other. Each first multiplex mirror 11 forms an included angle of 45° with the direction of propagation of the light transmission signal incident from the light emitter, ensuring that each first multiplex mirror 11 can reflect the corresponding light transmission signal; correspondingly, the second multiplexer The mirror 12 also forms an included angle of 45° between the propagation direction of the light emission signal incident from the light emitter, so that the second wave combining mirror 12 can reflect the light emission signal incident from the remaining light emitters, and can also make the light emission signal incident on the corresponding light emitter The light emission signal is transmitted through. The second wave combining mirror 12 reflects the light emission signals incident from the remaining light emitters to propagate along the optical path, and also makes the light emission signals incident on the corresponding light emitters propagate along the optical path after transmission, and the light emission signals incident from all light emitters After converging at the converging place, a light beam is formed, and each optical transmission signal is combined and emitted to the optical port along the optical path.

In some other embodiments, each wave combining mirror is a prism, the side of the prism has a coating layer, and the wave combining mirrors are glued to each other through a glue layer. Similarly, an angle of 45° is formed between each first multiplexer 11 and the propagation direction of the light transmission signal incident from the light emitter, and correspondingly, the second multiplexer 12 is also connected to the direction of propagation of the light transmission signal incident from the light emitter. There is an angle of 45° between the propagation directions. The prism with a coating layer can reflect the incident light transmission signal of the corresponding light emitter to the converging place of the second multiplex mirror 12 , and can also transmit the light transmission signal incident from other light emitters. The glued surface of the first combined mirror 11 closest to the second combined mirror 12 and the second combined mirror 12 form a converging place, and the light transmission signals incident from the rest of the light emitters are reflected by the glued surface after arriving at the converging place, At the same time, the light emission signal incident from the light emitter corresponding to the second multiplex mirror 12 also reaches the focal point after being transmitted. The light transmission signals incident from all the light emitters are converged at the converging point to form a light beam, and each light transmission signal is combined and emitted to the optical port along the optical path.

On the basis of any of the above embodiments, when the number of light emitters 13 is two, the number of first multiplexer mirrors 11 is one. Referring to Fig. 8 to Fig. 9, the two optical emission signals injected from the light emitter are optical emission signal λ1 and optical emission signal λ2 in sequence. It is easy to understand that the wavelength of the optical emission signal λ1 is λ1, and the wavelength of the optical emission signal λ2 is λ2. The optical transmission signal λ1 enters from the first light emitter 131 and shoots to the first wave combining mirror 11, and the first wave combining mirror 11 reflects the light transmitting signal λ1 to the converging place of the second wave combining mirror 12; at the same time, the light transmitting signal λ2 enters from the second light emitter 132 and goes to the second multiplexer mirror 12 . The optical transmission signal λ2 is transmitted through the second wave combining mirror 12 and reaches the converging place, and the second wave combining mirror 12 reflects the light transmitting signal λ1, so that the light transmitting signal λ1 can propagate along the optical path after being reflected at the converging place, that is, the light After being reflected by the second wave combining mirror 12, the transmit signal λ1 is aggregated with the light transmit signal λ2 to form a light beam, and the merged beam is emitted to the optical port along the optical path.

When the wave combining mirror is a prism, when the light emitting signal λ2 enters from the second light emitter, the light emitting signal λ2 propagates along the optical path, and the second wave combining mirror 12 does not affect the propagation direction of the light emitting signal λ2; and When the wave combining mirror is a filter, the light emission signal λ2 does not propagate along the optical path when it enters from the second light emitter. When it passes through the second wave combining mirror 12, the light emission signal λ2 is refracted and reaches The propagation direction of the optical emission signal λ2 at the converging point is along the direction of the optical path. The same applies when the number of the second multiplexer mirrors 12 is at least two.

On the basis of any of the above embodiments, when the number of light emitters 13 is more than three, the number of first multiplexer mirrors 11 is at least two. It is easy to understand that the wavelengths of the optical transmission signals that can be reflected by each first multiplexer mirror 11 are different. The first multiplexer mirror 11 has a first end face and a second end face opposite to each other. The first end surfaces of each first multiplexer mirror 11 are far away from the second multiplexer mirror 12 , and the first multiplexer mirror 11 can transmit the optical transmission signal incident from the first end surface. The second end surface of the first multiplex mirror 11 closest to the second multiplex mirror 12 is opposite to or attached to the second multiplex mirror 12. It can be understood that, except for the first multiplex mirror 11 farthest from the second multiplex mirror 12, the remaining first multiplex mirrors 11 can at least transmit the light transmission signal incident from its first end face; or , all the first multiplex mirrors 11 can transmit the light transmission signals of the remaining wavelength bands except that the light transmission signals of a specific wavelength band emitted by the corresponding light emitters can be reflected. Apparently, the reflection directions of the first multiplex mirrors 11 are all parallel to the first direction. The reflection direction of the first multiplex mirror 11 refers to the propagation direction of the optical transmission signal after being reflected by the first multiplex mirror 11 . The glued surfaces of the first wave combining mirror 11 and the second wave combining mirror 12 play a role of total transmission for the transmitted optical signal, and play a role of total reflection for the split-wave received signal.

It can be understood that a collimating lens 14 may be provided at the light exit of each light emitter 13 . The three light emitters 13 are respectively the first light emitter 131, the second light emitter 132 and the third light emitter 133. Correspondingly, the collimator lenses 14 corresponding to the positions of the light emitters 13 are the first collimator lenses respectively. 141 , a second collimating lens 142 and a third collimating lens 143 .

When each wave combining mirror is a prism, refer to Figure 11 to Figure 13; when each wave combining mirror is a filter with transmission and reflection for a specific wavelength band, refer to Figure 15. In the following, the case where the number of light emitters 13 is three is taken as an example for description.

The three light emission signals emitted by the three light emitters are light emission signal λ1, light emission signal λ2 and light emission signal λ3 in sequence. It is easy to understand that the wavelength of the light emission signal λ1 emitted by the first light emitter 131 is λ1, and the wavelength of the light emission signal λ1 from the second light emitter 131 is λ1. The wavelength of the optical emission signal λ2 emitted by 132 is λ2, the wavelength of the optical emission signal λ3 emitted by the third light emitter 133 is λ3, and λ1, λ2 and λ3 are different. The light transmission signal λ1 enters from the first light emitter and shoots to the first first multiplexer 11, the light transmission signal λ1 is reflected by the first first multiplexer 111, and the reflected light transmission signal λ1 is fully transmitted through Through No. 2 first multiplex mirror 112, shoot to the converging place of second multiplex mirror 12; The mirror 112 reflects the optical emission signal λ2, and the reflected optical emission signal λ2 is converged with the optical emission signal λ1 after passing through the second multiplexer mirror 112 and is directed to the converging point of the second multiplexer mirror 12 together. Since the reflection directions of the first multiplex mirrors 11 are parallel to the first direction, the light emission signal λ2 is reflected by the second multiplex mirror 112 after being reflected by the reflected light signal λ1 transmitted through the first multiplex mirror 112. merged, and the merged light beams are directed to the second wave combining mirror 12 together. The light beam combined by the optical emission signal λ1 and the optical emission signal λ2 reaches the converging place of the second wave combining mirror 12, and is totally reflected by the second wave combining mirror 12 to change the direction of propagation; while the light emitting signal λ3 emitted from the third light emitter 133 is transmitted through After passing through the second wave combining mirror 12 and arriving at the converging place, the optical transmission signal λ3 is aggregated with the combined optical transmission signal λ1 and optical transmission signal λ2 to form a beam, and the combined beam is emitted to the optical port along the optical path.

In some embodiments, the wave splitting mirror group 20 includes at least two wave splitting mirrors 22 and a mirror group, the mirror group is configured to reflect the light receiving signal to each wave splitting mirror 22, the wave splitting mirror 22 and The number of detectors is the same, and the positions of the wave splitting mirrors 22 correspond to the detectors one by one. In this embodiment, the wave-splitting mirrors 22 are all prisms, and the sides of the prisms have coating layers, and the wave-splitting mirrors 22 are glued to each other through a glue layer. It is easy to understand that the wavelengths of the received light signals that can be reflected by each wavelength splitting mirror 22 are different.

In an embodiment, the wave splitting mirror group 20 may further include a turning mirror, and the turning mirror is located between the wave splitting mirror 22 and the detector. The turning mirror can reflect the received light signal emitted from the wave splitting mirror 22 to the corresponding detector. The turning mirror can change the direction of the light receiving signal, so that the arrangement of the detection module is more flexible, and it is beneficial to improve the space utilization rate.

In one embodiment, referring to FIG. 7 , the reflector group includes a reflector 21 , the reflection direction of the reflector 21 is parallel to the second direction, the reflection direction and the propagation direction of the received light signal reflected by the reflector 21 . Each wave-splitting mirror 22 is arranged along the second direction, and each wave-splitting mirror 22 is respectively configured to reflect a light receiving signal to a corresponding detector. The reflective mirror 21 is also a prism, and the side of the reflective mirror 21 has a coating layer, and the reflective mirror 21 and the nearest wave splitting mirror 22 are glued to each other by a glue layer.

The angle between the outgoing light of the optical path channel and the normal direction of the reflective surface of the reflector 21 is 13° to 50°, and each wave-splitting mirror 22 has opposite first end faces and second end faces, and each wave-splitting mirror 22 has an angle of 13° to 50°. The first end surface and the second end surface are parallel to the reflective surface of the mirror element 21 . Therefore, after the light receiving signal is reflected by the corresponding wave splitting mirror 22, it can be bent at a right angle and then propagated. length and width. The angle between the outgoing light of the optical path channel and the normal direction of the reflecting surface of the reflecting mirror 21 may be 45°. In the following, the case where the number of the wave-splitting mirrors 22 is three is used as an example for illustration, and the wave-splitting mirrors 22 are arranged in sequence along a direction gradually away from the reflecting mirror 21 .

Continuing to refer to FIG. 7 , the light beam entering from the optical port along the optical path includes a received light signal λ4, a received light signal λ5, and a received light signal λ6. It is easy to understand that the received light signal λ4 has a wavelength of λ4, and the received light signal λ5 has a wavelength of λ5. , the wavelength of the light receiving signal λ6 is λ6, and λ4, λ5 and λ6 are not equal. The light beam reaches the reflection mirror 21 along the optical path, and the reflection mirror 21 reflects the light beam to the No. 3 wave splitting mirror 223, and the end face of the wave splitting mirror 223 reflects the light receiving signal λ6 to the third detector, and the remaining light receiving The signal λ4 and the light-receiving signal λ5 are transmitted through the No. 3 wave-splitting mirror 223 until the light beam combined by the light-receiving signal λ4 and the light-receiving signal λ5 propagates to the No. 2 wave-splitting mirror 222, and the end face of the wave-splitting mirror 222 will The light-receiving signal λ5 is reflected to the second detector, and the remaining light-receiving signal λ4 is transmitted through the No. 2 wave-splitting mirror 222 until the light-receiving signal λ4 propagates to the No. 1 wave-splitting mirror 221, and the wave-splitting mirror 221 The received signal λ4 is reflected by the end face to the first detector, thereby completing the wave division.

In this embodiment, the second end surface of each wavelength splitting mirror 22 is away from the reflection mirror 21 , and the wavelength splitting mirror 22 can transmit the light receiving signal incident from the first end surface thereof. The first end face of the wave splitter mirror 22 is opposite to the second end face, and the first end face of the wave splitter mirror 21 closest to the reflective mirror 21 is attached to the reflective mirror 21 . It can be understood that, except for the wave-splitting mirror 22 farthest from the reflective mirror 21, the remaining wave-splitting mirrors 22 can at least allow light receiving signals of several wavelength bands incident from their first end faces to pass through; or, All the wave splitting mirrors 22 can transmit the light receiving signals of the remaining wavelength bands except for the reflection of the light receiving signals of specific wavelength bands.

In another embodiment, referring to FIG. 16 , the reflecting mirror group has opposite first reflecting surfaces 2121 and first transmitting surfaces 2122, and the wave splitting mirrors 22 are respectively located between the first transmitting surfaces 2122 and corresponding detectors, and the splitting The wave mirror 22 can make a light receiving signal transmit to the corresponding detector, and at least one wave splitting mirror 22 can reflect the remaining light receiving signal to the first reflecting surface 2121, and the first reflecting surface 2121 reflects the remaining light receiving signal to the next adjacent wave splitting mirror 22.

Also taking the case where the number of the wave splitting mirrors 22 is three as an example, the wave splitting mirrors 22 are arranged in sequence along a direction gradually away from the reflecting mirror 21 . The light beam entering from the optical port along the optical path includes the light receiving signal λ4, the light receiving signal λ5 and the light receiving signal λ6. It is easy to understand that the wavelength of the light receiving signal λ4 is λ4, the wavelength of the light receiving signal λ5 is λ5, and the light receiving signal λ6 The wavelength of λ6, λ4, λ5 and λ6 are not equal. The light beam entering from the optical port is transmitted through the first transmission surface 2122 of the mirror group and then directed to the No. 1 wave splitting mirror 221. The No. 1 wave splitting mirror 221 can make the light receiving signal λ4 transmit to the first detector, and the light receiving The signal λ6 and the light receiving signal λ5 are reflected back to the first reflective surface 2121 of the mirror group; The wave-splitting mirror 222 can make the light-receiving signal λ5 transmitted to the second detector, and the light-receiving signal λ6 is reflected back to the first reflection surface 2121 of the mirror group; To the No. 3 demultiplexing mirror 223 , the No. 3 demultiplexing mirror 223 can transmit the received light signal λ6 to the third detector, thereby completing the demultiplexing of the light beam. It can be understood that in this embodiment, the No. 3 wave splitting mirror 223 may not be provided, and the light receiving signal λ6 can still be sent to the third detector.

Referring to Fig. 11 to Fig. 12, it can be understood that a converging lens 23 can be provided at the receiving place of each detector, and three converging lenses 23 correspond to each detector one by one. Wherein, No. 1 converging lens 231 is located between the first detector and No. 1 wave splitting mirror 221, No. 2 converging lens 232 is located between the second detector and No. 2 wave splitting mirror 222, and No. 3 converging lens 233 is located between Between the third detector and the third wave splitting mirror 223 .

In some implementations, the reflective mirror group may include a reflective mirror on which both the first reflective surface 2121 and the first transmissive surface 2122 are disposed. The reflector is a prism, the first reflective surface 2121 and the first transmissive surface 2122 of the reflector both have coatings, and the wave splitting mirror 22 is glued on the first transmissive surface 2122 of the reflector through a glue layer. The optical channel can pass through the first transmissive surface 2122, so that the light beam entering from the optical port along the optical channel can be directed to the first transmissive surface 2122, thereby completing the above wave splitting process.

In other embodiments, referring to FIG. 16 , the reflector group includes a first reflector 211 and a second reflector 212, and the first reflective surface 2121 and the first transmissive surface 2122 are both arranged on the second reflector 212, respectively. The mirror element 22 is glued on the first transmission surface 2122 of the second reflector 212 through a glue layer. The second reflective mirror 212 also has an opposite second reflective surface 2123 , and the received light signal entering along the optical path is reflected by the first reflective mirror 211 and the second reflective surface 2123 in sequence, and then reaches the wave splitting mirror 22 . The light beam that enters along the optical path from the optical port is first reflected by the first reflector 211 to the second reflector 212, and the light beam propagates in the second reflector 212 until it reaches the second reflective surface 2123, and the light beam reflected by the second reflective surface 2123 Then it is irradiated to the first transmission surface 2122, and the subsequent wave splitting process is the same as above. The first reflection mirror 211 is glued on the second transmission surface of the second reflection mirror 212 through a glue layer. Since the light beam entering from the optical port is firstly reflected by the first reflection mirror 211 to the second reflection mirror 212 and then split into waves, it can be adjusted by adjusting The relative position of the first reflector 211 and the second reflector 212 can more flexibly adjust the relative position of the optical port and the detector, without ensuring that the optical path must pass through one of the detectors.

In some embodiments, referring to FIG. 12 and FIG. 14 , the wave splitting mirror group 20 further includes an extension lens 213 configured to enhance the strength of the received light signal, and the extension lens 213 is located between the first transmission surface 2122 and the wave splitting mirror 22 , the extension lens 213 has a third transmission surface 2131 and a fourth transmission surface 2132 parallel to each other, the third transmission surface 2131 is attached to the first transmission surface 2122 , and the wave splitting mirror 22 is installed on the fourth transmission surface 2132 . The extension lens 213 is a prism, the third transmission surface 2131 of the extension lens 213 is glued to the first transmission surface 2122 through the glue layer, and the wave splitting lens is glued to the fourth transmission surface 2132 through the glue layer. The extended lens 213 prolongs the optical path length of the light receiving signal between the second reflector 212 and the wave splitting mirror 22, thereby reducing the distance between two adjacent light receiving signals when they are emitted, thereby reducing the time required for setting the module. desired width.

In an embodiment, the circuit processing unit includes a first receiving circuit, a second receiving circuit and a conversion circuit. The first receiving circuit is communicatively connected with each light emitter 13 of the light-emitting module, the first receiving circuit is configured to receive several external electrical signals, and the conversion circuit is configured to convert the external electrical signal into a downlink electrical signal and then input it to the light-emitting module, thereby Each light emitter 13 can emit light emission signals of different wavelengths. The second receiving circuit is communicatively connected with each detector of the detecting module, the second receiving circuit is configured to receive a plurality of detecting electrical signals input from the detecting module, and the conversion circuit can convert the detecting electrical signals into uplink electrical signals and output them outward.

Referring to FIG. 10 , it is the same when the number of the wave splitting mirrors 22 is two. The light beam condensed by the light receiving signal λ4 and the light receiving signal λ5 enters the second reflector 212 from the optical port, and is reflected by the glued surface of the second reflector 212 and the first reflector 211 to reflect the light beam to the second reflector 212. The second reflective surface 2123 of the mirror 212, the second reflective surface 2123 totally reflects the light beam to the No. The received light signal λ5 is reflected to the first reflective surface 2121, and the first reflective surface 2121 reflects the received light signal λ5 to the second wave splitting mirror 222, and the second wave splitting mirror 222 transmits the received light signal λ5.

Referring to FIG. 6 , the following description will be made by taking the case where there are three light emitters 13 and three detectors as an example.

The first receiving circuit receives a number of external electrical signals, and the conversion circuit respectively converts these external electrical signals into a first downlink electrical signal, a second downlink electrical signal and a third downlink electrical signal, and transmits them to the three light emitters 13 respectively . The three light emitters 13 perform electro-optic conversion after receiving the corresponding downlink electrical signals. The three light emitters 13 are the first light emitter, the second light emitter and the third light emitter. The first light emitter sends out the light emission signal λ1, and the second light emitter The light emitter emits a light emission signal λ2, the third light emitter emits a light emission signal λ3, and the three light emission signals with different wavelengths are sent to the wave combining mirror group 10, and the wave combining mirror group 10 aggregates the three light emission signals into a light beam, and the light beam The light emitted along the optical path to the optical port is received by the single-port optical fiber 30 .

The single-port optical fiber 30 guides the light beam formed by combining multiple light receiving signals to the optical port, and the light beam entering the device from the optical port shoots to the wave-splitting mirror group 20 along the optical path, and the wave-splitting mirror group 20 divides the light beam into the first light beam The receiving signal λ4, the second light receiving signal λ5 and the third light receiving signal λ6, each light receiving signal is sent to each corresponding detector and received. The three detectors are respectively the first detector, the second detector and the third detector. The first detector converts the first light receiving signal λ4 into the first uplink electrical signal and then outputs it. Similarly, the second detector converts The second light receiving signal λ5 is converted into a second uplink electrical signal and then output, and the third detector converts the third light receiving signal λ6 into a third uplink electrical signal and then output.

An embodiment of the present application further provides an optical module, which includes the single-fiber multi-directional optical transceiver and the single-port optical fiber 30 as shown in the above-mentioned embodiments. The end of the single-port optical fiber 30 is located at the optical port, and the light emitted by the single-port optical fiber 30 enters the single-fiber multi-directional optical transceiver device from the optical port, and the light emitted by the single-port optical fiber 30 can propagate along the optical path channel; After multiplexing, it can also be directed to the single-port optical fiber 30 at the optical port through the optical path channel.

A single-fiber multi-directional optical transceiver device and optical module proposed in the embodiment of the present application, by setting the single-port optical fiber in the optical port, the wave combining mirror group aggregates the light receiving signals of different wavelengths emitted by the light emitter and guides them to the optical port. The aggregated beams of different optical receiving signals emitted from the optical port are separated by the wave splitting mirror group and then directed to each detector, so that a single optical port structure can be used to transmit and receive optical signals. The light emitters are arranged in parallel and at intervals with the light output direction along the first direction, and the detectors are arranged along the second direction, so that the length or width of the single-fiber multi-directional optical transceiver device will not be greatly increased when adding light emitters or detectors, effectively improving the space. The utilization rate is beneficial to miniaturization and packaging, and the economy is improved.

The above is a description of several embodiments of the present application, but the invention of the present application is not limited to the described embodiments, and those skilled in the art can also make various equivalent modifications or replacements without violating the spirit of the present application. Equivalent modifications or replacements are all included within the scope defined by the claims of the present application.

Claims (13)

1. A single-fiber multi-directional optical transceiver, comprising:

   an optical port, the optical port is used to install a single-port optical fiber;

   A light emitting module, the light emitting module includes at least two light emitters, each of the light emitters is arranged in parallel and spaced apart, and the light emitting direction of the light emitters is along the first direction;

   A detection module, the detection module includes at least two detectors, each of the detectors is arranged at intervals, and the light emitting direction of the detectors is along the second direction;

   A wave combining mirror group, the wave combining mirror group is configured to converge the light emission signals emitted from each of the light emitters, and the light emission signals are converged and directed to the optical port;

   A wave splitting mirror group, the light receiving signal sent from the optical port can be directed to the wave splitting mirror group, the wave splitting mirror group is set to separate each of the light receiving signals entering from the optical port, and reflecting each of said light-receiving signals to a corresponding said detector;

   A circuit processing unit, the circuit processing unit is communicatively connected to both the light emitting module and the detection module.
2. The single-fiber multi-directional optical transceiver according to claim 1, wherein the first direction is parallel to the second direction.
3. The single-fiber multi-directional optical transceiver device according to claim 1, wherein the wave combining mirror group includes at least two wave combining mirrors arranged along the first direction, the wave combining mirrors and the light emitting The number of multiplexers is the same, and the positions of the multiplexer mirrors correspond to the positions of the light emitters one by one. The multiplexer mirrors are divided into at least two first multiplexer mirrors and one second multiplexer mirror. The first multiplexer mirror The two multiplex mirrors have a converging point opposite to the optical port, each of the first multiplex mirrors can reflect the corresponding light emission signal to the converging point, and the second multiplex mirror can make the corresponding light The transmitting signal is transmitted to the converging place, and the optical transmitting signal can be directed to the optical port after converging at the converging place.
4. The single-fiber multi-directional optical transceiver device according to claim 3, wherein each of the first multiplexer mirrors has opposite first end faces and second end faces, and the first facets of each of the first multiplexer mirrors The end surface is far away from the second multiplexer mirror, and the first multiplexer mirror can transmit the optical transmission signal incident from the first end surface.
5. The single-fiber multi-directional optical transceiver device according to claim 1, wherein the wave splitting mirror group includes at least two wave splitting mirrors and a mirror group, and the mirror group is configured to reflect the light receiving The signal is sent to each of the wave-splitting mirrors, the number of the wave-splitting mirrors is the same as that of the detectors, and the positions of the wave-splitting mirrors and the detectors correspond one-to-one.
6. The single-fiber multi-directional optical transceiver device according to claim 5, wherein the reflector group includes a reflector, and the reflector is configured to reflect the received light signal entering from the optical port, each of the The wave-splitting mirrors are arranged along the second direction, and each of the wave-splitting mirrors is respectively configured to reflect the received light signal to the corresponding detector.
7. The single-fiber multi-directional optical transceiver device according to claim 6, wherein the optical port is correspondingly formed with an optical channel, and the angle between the outgoing light of the optical channel and the normal direction of the reflective surface of the mirror is 13 ° to 50°, the exit light formed by each of the wave splitting mirror elements is parallel to the axial direction of the optical port.
8. The single-fiber multi-directional optical transceiver device according to claim 5, wherein the reflecting mirror group has a first reflecting surface and a first transmitting surface opposite to each other, and the wave-splitting mirrors are respectively located on the first transmitting surface and the first transmitting surface. Between the corresponding detectors, the wave-splitting mirrors can transmit a light-receiving signal to the corresponding detectors, and at least one of the wave-splitting mirrors can reflect the rest of the light-receiving signals to the first A reflective surface, the first reflective surface reflects the rest of the received light signal to the next adjacent wave splitting mirror.
9. The single-fiber multi-directional optical transceiver device according to claim 8, wherein the reflector group includes a first reflector and a second reflector, the second reflector has a second reflective surface, and the optical port The incoming light receiving signal is reflected by the first reflective mirror and the second reflective surface in sequence, and then arrives at the wave splitting mirror.
10. The single-fiber multi-directional optical transceiver device according to claim 9, wherein the wave splitting mirror group further includes an extension lens configured to enhance the strength of the received light signal, and the extension lens is located between the first transmission surface and the Between the wave-splitting mirrors, the extended mirror has a third transmission surface and a fourth transmission surface parallel to each other, the third transmission surface is attached to the first transmission surface, and the wave-splitting mirrors are installed on the fourth transmission surface.
11. The single-fiber multidirectional optical transceiver according to any one of claims 1 to 10, wherein the wave splitting mirror group and the wave combining mirror group are arranged in sequence along a direction away from the optical port.
12. The single-fiber multidirectional optical transceiver device according to any one of claims 1 to 10, wherein the circuit processing unit includes:

    a first receiving circuit, the first receiving circuit is configured to receive an external electrical signal;

    a second receiving circuit, the second receiving circuit is configured to receive the electrical detection signal input from the detection module; and

    A conversion circuit, the conversion circuit is configured to convert the external electrical signal into a downlink electrical signal and then input it to the light emitting module, and convert the detection electrical signal into an uplink electrical signal and output it to the outside.
13. An optical module, comprising:

    The single-fiber multidirectional optical transceiver device according to any one of claims 1 to 12; and

    A single-port optical fiber, the end of the single-port optical fiber is located at the optical port.

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