CN115808749A - Single-fiber multidirectional light transmitting and receiving device and optical module - Google Patents
Single-fiber multidirectional light transmitting and receiving device and optical module Download PDFInfo
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Abstract
The invention provides a single-fiber multidirectional optical transceiver and an optical module, and belongs to the technical field of optical fiber communication. The single-fiber multi-directional optical transceiver comprises an optical port; a light emitting module including at least two light emitters; the detection module comprises at least two detectors; the wave combining lens is used for converging the light emission signal; the wave splitting lens group is used for separating all the light receiving signals; and a circuit processing unit. In the embodiment of the invention, the single-port optical fiber is arranged in the optical port, the wave combining lens group leads the light receiving signals with different wavelengths to the optical port after the light receiving signals are aggregated, and light beams emitted from the optical port and aggregated by the different light receiving signals are emitted to each detector after being separated by the wave splitting lens group, so that the single-port structure can emit and receive the light signals. When the illuminator or the detector is additionally arranged, the length or the width of the single-fiber multidirectional light receiving and transmitting device cannot be greatly increased, the space utilization rate is effectively improved, the miniaturization packaging is facilitated, and the economical efficiency is improved.
Description
Technical Field
The invention relates to the technical field of optical fiber communication, in particular to a single-fiber multidirectional optical transceiver and an optical module.
Background
With the rapid development of 5G, people have higher and higher requirements for bandwidth and more tense optical fiber resources, and a single-fiber multi-directional optical transceiver is favored by customers as a scheme capable of saving half of optical fiber. One-fiber multi-wavelength 10Gbps low-rate optical transceiver such as a single-fiber four-way small SFP +10G COMBOPON OLT optical module of TO scheme is popular in the market. However, referring to fig. 1, in the known transceiver device, typically, the 10G rate downstream transmitting unit has a TEC temperature control function, and the 2.5G rate downstream transmitting unit does not have a laser temperature control unit, in which case the feasible length dimension of the transceiver device is a and the standard limit width dimension is B. If the 2.5G rate downlink transmitting unit is upgraded TO the 50G rate transmitting unit on the basis of the structure, the TEC temperature control function needs TO be added, referring TO FIG. 2, the 50G rate TO-CAN increases the height size, increases the width of the transceiver, and exceeds the size b, so that the SFP + cannot be satisfied. Furthermore, referring TO fig. 3, if a pair of wavelengths is added TO the above structure TO implement a triple-transmitting and triple-receiving function, a transmitter unit TO-CAN and a receiver unit TO-CAN are added, so that the existing long size is further exceeded, and the width also exceeds the size b.
In addition, referring to fig. 4 to 5, most of the optical modules in the market that implement two-fiber-sending and two-fiber-receiving structures at most currently use one-sending and one-receiving optical port structures or external circulators or WDM optical fiber coils in transceiver devices. This structure has the following disadvantages: the transmitting unit and the receiving unit need two optical ports to complete, the transmitting unit is already attached with a WDM prism wave-combining prism combination, and the combined optical signal is output from one optical port. The receiving unit inputs the optical wavelength signal from another optical port and carries with the wave-splitting prism group to complete wave splitting. If the structure needs to complete the single-fiber receiving and transmitting, a WDM multiplexer-demultiplexer group is needed to be arranged at the two optical ports, the structure is complex, the optical fiber coiling is needed in the device, and the process requirement is also improved.
Disclosure of Invention
An embodiment of the present invention is directed to solve at least one of the technical problems in the prior art, and provides a single-fiber multi-directional optical transceiver and an optical module, which are intended to achieve a small package.
To achieve the above object, an embodiment of a first aspect of the present invention provides a single-fiber multi-directional optical transceiver device, including:
the optical port is used for installing a single-port optical fiber;
the light-emitting module comprises at least two light emitters, the light emitters are arranged in parallel at intervals, and the light emitting directions of the light emitters are along a first direction;
the detection module comprises at least two detectors, and the detectors are arranged at intervals along the second direction;
the wave combining lens group is used for converging light emission signals emitted from all the light emitters, and the light emission signals are converged and then emitted to the light port;
the optical receiving signal emitted from the optical port can be emitted to the wave splitter group, and the wave splitter group is used for separating each optical receiving signal entering from the optical port and reflecting each optical receiving signal to the corresponding detector;
and the circuit processing unit is in communication connection with the light emitting module and the detection module.
In order to achieve the above object, an embodiment of a second aspect of the present invention further provides an optical module, including the single-fiber multi-directional optical transceiver device according to the embodiment of the first aspect.
The single-fiber multidirectional optical transceiver and the optical module provided by the embodiment of the invention have the advantages that the single-port optical fiber is arranged in the optical port, the wave combining lens group leads the light receiving signals with different wavelengths emitted by the light emitter to the optical port after the light receiving signals are aggregated, and the light beams aggregated by the different light receiving signals emitted from the optical port are emitted to each detector after being separated by the wave splitting lens group, so that the single-port structure can emit and receive the light signals. The illuminator parallel interval arrangement and light-emitting direction follow the first direction, and the detector is arranged along the second direction to can not lengthen the length or the width of the multidirectional light transceiver of single fiber by a wide margin when addding illuminator or detector, effectively improve space utilization, be favorable to miniaturized encapsulation, improve economic nature.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a transceiver device in the prior art;
FIG. 2 is a schematic diagram of a transmitting unit with an additional TEC temperature control function in the prior art
Fig. 3 is a schematic diagram of a transceiver device for three-transmission and three-reception in the prior art;
FIG. 4 is a schematic diagram of a transceiver device with two optical ports according to the prior art;
FIG. 5 is a schematic diagram of the electrical connections of a transceiver device for two optical ports according to the prior art;
fig. 6 is a schematic circuit connection diagram of the photoelectric conversion frame in the present embodiment;
fig. 7 is a front view of an embodiment of the single-fiber multidirectional optical transceiver device in this embodiment for three-transceiver;
fig. 8 is a schematic diagram of an embodiment of the single-fiber multidirectional optical transceiver device in this embodiment during two transmission and two reception operations;
FIG. 9 is a schematic diagram of the combiner group in the embodiment shown in FIG. 8;
FIG. 10 is a schematic view of the wave splitter group in the embodiment shown in FIG. 8;
fig. 11 is a schematic diagram of another embodiment of the single-fiber multidirectional optical transceiver in this embodiment when three transceivers are used for three transceivers;
FIG. 12 is a front view of the embodiment shown in FIG. 11;
FIG. 13 is a schematic view of the combiner group in the embodiment shown in FIG. 11;
FIG. 14 is a schematic diagram of the wave splitter group in the embodiment shown in FIG. 11
Fig. 15 is a schematic diagram of another embodiment of a three-transmit/receive time combiner group of the single-fiber multidirectional optical transceiver device in this embodiment;
fig. 16 is a schematic diagram of another embodiment of a three-receive three-transmit time-division wave-splitting lens group of the single-fiber multidirectional optical transceiver in this embodiment.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, preferred embodiments of which are illustrated in the accompanying drawings, wherein the drawings are provided for the purpose of visually supplementing the description in the specification and so forth, and which are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and simplification of the description, and 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 invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the essential numbers, and greater than, less than, etc. are understood as including the essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
An embodiment of the present invention provides a single-fiber multi-directional optical transceiver, which includes an optical port, a light emitting module, a detecting module, a wave combining lens group 10, a wave splitting lens group 20, and a circuit processing unit. The circuit processing unit is in communication connection with the light emitting module and the detection module to control conversion or uplink and downlink transmission of the photoelectric signals.
The optical port is correspondingly formed with an optical path channel, the optical emission signal is emitted to the optical port along the optical path channel after being converged by the wave combining lens group 10, and the optical reception signal enters from the optical port and is emitted to the wave splitting lens group 20 along the optical path channel. The wave combining lens group 10 and the wave splitting lens group 20 in this embodiment form an optical module, which is hereinafter referred to as this module; the single-fiber multidirectional optical transceiver in this embodiment is simply referred to as this apparatus hereinafter. In this application, the optical path refers to a propagation path in space of light emitted from an optical fiber fixed at an optical port, which enters the device through the optical port, without passing through the wave combining lens group 10 and the wave splitting lens group 20. Obviously, the optical path channel need not be formed of a particular physical structure.
The wave splitting lens group 10 and the wave combining lens group 20 are sequentially arranged along the direction far away from the optical port, that is, the light receiving signal entering from the optical port is split after being emitted to the wave splitting lens group 10, and is not emitted to the wave combining lens group 20; and the emitted light signal emitted by the light-emitting module is transmitted to the light port through the wave splitting lens group 10 after wave combination. It will be appreciated that the beam splitter group 10 does not affect the propagation of the light beam into which the emitted light signals are focused.
The light emitting module includes at least two light emitters 13, and it is easily understood that the light emitting signal wavelengths emitted from the respective light emitters 13 are different. The light emitter may be a laser. Optionally, the light-emitting position of each light emitter can be respectively provided with a collimating lens 14, and the collimating lens 14 can enable the light energy emitted by the light emitter 13 to form a collimated light column to enter the module, so that the transmission path of the light emission signal in the module is clear and accurate. Each light emitter 13 emits light emission signals with different wavelengths to the wave combining lens group 10, the wave combining lens group 10 is used for converging the light emission signals emitted from each light emitter, the light emission signals can be emitted to the light port along the light path channel after being converged, and the optical fibers positioned at the light port can transmit all the light emission signals with different wavelengths outwards.
The detection module comprises at least two detectors, and each detector is used for receiving light receiving signals with different wavelengths. The light receiving signal emitted from the optical port can enter the spectroscope group 20 along the optical path, and the optical port itself does not emit 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 spectroscope 20 is used to separate each light receiving signal entering from the light port and reflect each light receiving signal to the corresponding detector. Optionally, a converging lens 23 may be disposed at the receiving position of each detector, and the light receiving signal can be converged on the main optical axis to propagate after passing through the converging lens 23, so that the detector can collect the light quantity of the light receiving signal comprehensively.
In one embodiment, the emitters are spaced apart in parallel and the detectors are spaced apart. Since the emitter and detector are spaced apart, the emitter 13 and detector are easily mounted. It is understood that all the turning optical paths formed by the optical ports may be perpendicular to the first direction, or may not be perpendicular to the first direction. Specifically, referring to fig. 7, the light emitters are spaced apart in a first direction and the detectors are spaced apart in a second direction. Since the three light emitters 13 are arranged side by side, even if the temperature control unit is added to the remaining light emitters 13 on the basis that one of the light emitters 13 is provided with the temperature control unit, the width of the device cannot be further increased along with the increase of the number of the light emitters 13 with large thickness, which 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 the space utilization rate.
In an embodiment, the wave combining lens group 10 includes at least two wave combining lens components arranged along the first direction, the number of the wave combining lens components is the same as that of the light emitters, and the positions of the wave combining lens components and the positions of the light emitters are in one-to-one correspondence. The wave combining mirror part is divided into at least two first wave combining mirrors 11 and one second wave combining mirror 12. The second wave combining mirror 12 is provided with a convergence position located in the optical path channel, each first wave combining mirror 11 can reflect the corresponding light emission signal to the convergence position, the second wave combining mirror 12 can enable the corresponding light emission signal to transmit to the convergence position, and all the light emission signals can be emitted to the light port along the optical path channel after being converged at the convergence position. Specifically, at least two combiner mirror elements are arranged along a first direction.
In some alternative embodiments, referring to fig. 15, each of the combiner mirror elements is a filter with specific reflection and transmission characteristics, and the combiner mirror elements are arranged at intervals and parallel to each other. Specifically, an included angle of 45 degrees is formed between each first wave combining mirror 11 and the propagation direction of the light emission signal incident from the light emitter, so that each first wave combining mirror 11 can reflect the corresponding light emission signal; accordingly, the second combiner 12 also forms an angle of 45 degrees with the propagation direction of the light emission signals incident from the light emitters, so that the second combiner 12 can reflect the light emission signals incident from the rest of the light emitters and can also transmit the light emission signals incident from the corresponding light emitters. The second wave combiner 12 reflects the light emission signals incident from the other light emitters to propagate along the light path channel, and also transmits the light emission signals incident from the corresponding light emitters along the light path channel after transmission, the light emission signals incident from all the light emitters are converged at the convergence point to form a light beam, and the light emission signals are combined and then jointly emitted to the light port along the light path channel.
In other alternative embodiments, each of the multiple wave mirror members is a prism, the side surfaces of the prism have a coating layer, and the multiple wave mirror members are bonded to each other by a bonding layer. Similarly, each first multiplexer 11 forms an angle of 45 ° with respect to the propagation direction of the light emission signal incident from the light emitter, and correspondingly, the second multiplexer 12 also forms an angle of 45 ° with respect to the propagation direction of the light emission signal incident from the light emitter. The prism with the film coating layer can reflect the light emission signals incident from the corresponding light emitter to the convergence position of the second multiplexer 12, and can also transmit the light emission signals incident from other light emitters. The first wave combining mirror 11 closest to the second wave combining mirror 12 forms a convergence point on the bonding surface bonded with the second wave combining mirror 12, light emission signals incident from the rest of the light emitters reach the convergence point and are reflected by the bonding surface, and meanwhile, the light emission signals incident from the light emitter corresponding to the second wave combining mirror 12 also reach the focusing point after being transmitted. The light emission signals incident from all the light emitters are converged at the convergence position to form a light beam, and the light emission signals are combined and then jointly emitted to the light port along the light path channel.
On the basis of any of the above embodiments, when the number of the light emitters 13 is two, the number of the first combiner mirrors 11 is one. Referring to fig. 8 to 9, two light emission signals incident from the light emitter are a light emission signal λ 1 and a light emission signal λ 2 in sequence, and it is easily understood that the wavelength of the light emission signal λ 1 is λ 1 and the wavelength of the light emission signal λ 2 is λ 2. The light emission signal λ 1 enters from the first light emitter 131 and emits to the first multiplexer 11, and the first multiplexer 11 reflects the light emission signal λ 1 to the convergence position of the second multiplexer 12; at the same time, the optical emission signal λ 2 enters from the second light emitter 132 and is directed to the second combiner 12. The light emission signal λ 2 penetrates through the second wave combiner 12 and reaches the convergence point, the second wave combiner 12 reflects the light emission signal λ 1, so that the light emission signal λ 1 can propagate along the optical path channel after being reflected at the convergence point, that is, the light emission signal λ 1 is reflected by the second wave combiner 12 and then is polymerized with the light emission signal λ 2 to form a light beam, and the converged light beam is emitted to the optical port along the optical path channel.
When the wave combining mirror is a prism, when the light emission signal λ 2 enters from the second light emitter, the light emission signal λ 2 is transmitted along the optical path, and the second wave combining mirror 12 does not affect the transmission direction of the light emission signal λ 2; when the wave combiner is a filter, the light emission signal λ 2 does not propagate along the optical path when entering from the second illuminator, and when passing through the second wave combiner 12, the light emission signal λ 2 is refracted, and the propagation direction of the light emission signal λ 2 reaching the convergence point after refraction is along the optical path direction. The number of the second wave combining mirrors 12 is at least two.
On the basis of any of the above embodiments, when the number of the light emitters 13 is three or more, the number of the first combiner mirrors 11 is at least two. It is easily understood that the wavelengths of the light emission signals that can be reflected by the first combiner mirrors 11 are different. The first combiner 11 has a first end face and a second end face opposite to each other. The first end face of each first combiner mirror 11 is far away from the second combiner mirror 12, and the first combiner mirror 11 can transmit the light emission signal incident from the first end face thereof. The second end face of the first combiner mirror 11 closest to the second combiner mirror 12 is opposite to or attached to the second combiner mirror 12. It is understood that, except for the first combiner mirror 11 farthest from the second combiner mirror 12, the remaining first combiner mirror 11 can at least transmit the light emission signal incident from the first end surface; alternatively, all the first combiner 11 can transmit and pass the light emission signals of the remaining wavelength bands, except for the light emission signals of the specific wavelength bands emitted by the corresponding light emitters. Obviously, the reflection direction of each first combiner mirror 11 is parallel to the first direction. The reflection direction of the first combiner 11 refers to a propagation direction of the light emission signal reflected by the first combiner 11. The bonding surfaces of the first and second wave-combining mirrors 11 and 12 play a role of total transmission for the emitted light signals, and play a role of total reflection for the sub-wave receiving signals.
It is understood that the light emitting portion of each light emitter 13 may be respectively provided with a collimating lens 14. The three light emitters 13 are respectively a first light emitter 131, a second light emitter 132, and a third light emitter 133, and accordingly, the collimator lenses 14 corresponding to the positions of the respective light emitters 13 one by one are respectively a first collimator lens 141, a second collimator lens 142, and a third collimator lens 143.
When all the wave-combining mirror pieces are prisms, refer to fig. 11 to 13; when each combiner mirror is a filter having transmission and reflection functions for a specific wavelength band, refer to fig. 15. The following description will be given taking the case where the number of the light emitters 13 is three as an example.
The three light emitting signals emitted by the three light emitters are the light emitting signal λ 1, the light emitting signal λ 2 and the light emitting signal λ 3 in sequence, and it is easy to understand that the wavelength of the light emitting signal λ 1 emitted by the first light emitter 131 is λ 1, the wavelength of the light emitting signal λ 2 emitted by the second light emitter 132 is λ 2, and the wavelength of the light emitting signal λ 3 emitted by the third light emitter 133 is λ 3, and λ 1, λ 2 and λ 3 are not equal. The light emission signal lambda 1 enters from the first light emitter and emits to the first wave combining mirror 11, the light emission signal lambda 1 is reflected by the first wave combining mirror 111, and the reflected light emission signal lambda 1 is totally transmitted through the second wave combining mirror 112 and emits to the convergence position of the second wave combining mirror 12; the light emission signal λ 2 emitted by the second light emitter 132 is emitted to the second multiplexer 112, the second multiplexer 112 reflects the light emission signal λ 2, and the reflected light emission signal λ 2 and the light emission signal λ 1 transmitted through the second multiplexer 112 are converged and emitted to the converging position of the second multiplexer 12. Because the reflection direction of each first wave combining mirror 11 is parallel to the first direction, the light emission signal λ 2 is merged with the reflection light signal λ 1 transmitted through the first wave combining mirror 112 after being reflected by the second wave combining mirror 112, and the merged light beams are emitted to the second wave combining mirror 12 together. The light beam converged by the light emission signal lambda 1 and the light emission signal lambda 2 reaches the convergence position of the second wave combining mirror 12, and is totally reflected by the second wave combining mirror 12 to change the propagation direction; the light emission signal λ 3 emitted from the third light emitter 133 passes through the second combiner 12 and reaches the convergence point, the light emission signal λ 3 is converged with the converged light emission signal λ 1 and light emission signal λ 2 to form a light beam, and the converged light beam is emitted to the light port along the light path channel.
In some embodiments, the wave splitting lens group 20 includes at least two wave splitting lens elements 22 and a mirror group for reflecting the light receiving signals to the wave splitting lens elements 22, the number of the wave splitting lens elements 22 is the same as that of the detectors, and the positions of the wave splitting lens elements 22 correspond to those of the detectors one by one. In this embodiment, the wave splitting mirror components 22 are prisms, the side surfaces of the prisms are provided with film coating layers, and the wave splitting mirror components 22 are mutually glued through glue layers. It is easily understood that the wavelength of the light reception signal that can be reflected by each of the partial wave mirror devices 22 is different.
Optionally, the splitter group 20 may further include a turning mirror, which is located between the splitter group 22 and the detector. The turning mirror may reflect the light receiving signal emitted from the splitting mirror 22 to the corresponding detector. The turning mirror piece can change the direction of the light receiving signal, so that the arrangement of the detection module is more flexible, and the space utilization rate is favorably improved.
In an embodiment, referring to fig. 7, the mirror assembly includes a mirror device 21, and the reflection direction of the mirror device 21 is parallel to the second direction, the reflection direction and the propagation direction of the light receiving signal after being reflected by the mirror device 21. The wave-splitting mirror elements 22 are arranged along the second direction, and each wave-splitting mirror element 22 is used for reflecting one light receiving signal to a corresponding detector. The reflector 21 is also a prism, the side of the reflector 21 has a film coating, and the reflector 21 and the closest sub-wave-splitting mirror 22 are glued together by a glue layer.
The angle between the emergent light of the light path channel and the normal direction of the reflecting surface of the reflector 21 is 13-50 degrees, each wave-splitting mirror 22 has a first end surface and a second end surface which are opposite, and the first end surface and the second end surface of each wave-splitting mirror 22 are parallel to the reflecting surface of the reflector 21. Therefore, after being reflected by the corresponding wave-splitting mirror part 22, the light receiving signal can be bent at a right angle and then transmitted, namely, the light receiving signal after wave-splitting can vertically shoot to a detector, and the length and the width required for arranging the wave-splitting mirror part 22 are also shortened. Specifically, the angle between the outgoing light of the optical path and the normal direction of the reflecting surface of the mirror element 21 may be 45 °. In the following, taking the case where the number of the partial wave mirror devices 22 is three as an example, the partial wave mirror devices 22 are sequentially arranged in a direction gradually away from the mirror device 21.
With continued reference to fig. 7, the light beam entering from the optical port along the optical path includes an optical reception signal λ 4, an optical reception signal λ 5, and an optical reception signal λ 6, and it is easy to understand that the wavelength of the optical reception signal λ 4 is λ 4, the wavelength of the optical reception signal λ 5 is λ 5, and the wavelength of the optical reception signal λ 6 is λ 6, where λ 4, λ 5, and λ 6 are not equal. The light beam reaches the mirror part 21 along the optical path, the mirror part 21 reflects the light beam to the third wave-splitting mirror part 223, the end surface of the wave-splitting mirror part 223 reflects the light receiving signal λ 6 to the third detector, the rest of the light receiving signal λ 4 and the light receiving signal λ 5 transmit through the third wave-splitting mirror part 223 until the light beam formed by combining the light receiving signal λ 4 and the light receiving signal λ 5 propagates to the second wave-splitting mirror part 222, the end surface of the wave-splitting mirror part 222 reflects the light receiving signal λ 5 to the second detector, the rest of the light receiving signal λ 4 transmits through the second wave-splitting mirror part 222 until the light receiving signal λ 4 propagates to the first wave-splitting mirror part 221, and the end surface of the wave-splitting mirror part 221 reflects the light receiving signal λ 4 to the first detector, thereby completing wave splitting.
In this embodiment, the second end surface of each of the partial wave mirror elements 22 is away from the mirror element 21, and the partial wave mirror elements 22 can transmit therethrough the light reception signal incident from the first end surface thereof. The first end face of the partial wave mirror 22 is opposite to the second end face, and the first end face of the partial wave mirror 21 closest to the mirror 21 is attached to the mirror 21. It is understood that, except for the partial wave mirror 22 farthest from the mirror element 21, the remaining partial wave mirror 22 can transmit at least a plurality of wavelength band light receiving signals incident from the first end face thereof; alternatively, all the partial wave mirror devices 22 can transmit and pass the light reception signals of the remaining wavelength bands, except for the light reception signals of the specific wavelength band.
In another embodiment, referring to fig. 16, the mirror group has a first reflective surface 2121 and a first transmissive surface 2122 opposite to each other, the wave-splitting mirror 22 is respectively located between the first transmissive surface 2122 and the corresponding detector, the wave-splitting mirror 22 can transmit one light receiving signal to the corresponding detector, at least one wave-splitting mirror 22 can reflect the rest light receiving signal to the first reflective surface 2121, and the first reflective surface 2121 reflects the rest light receiving signal to the next adjacent wave-splitting mirror 22.
Also taking the case where the number of the partial wave mirror devices 22 is three as an example, the partial wave mirror devices 22 are arranged in sequence in a direction gradually away from the mirror device 21. The light beam entering from the optical port along the optical path includes a light reception signal λ 4, a light reception signal λ 5, and a light reception signal λ 6, and it is easily understood that the wavelength of the light reception signal λ 4 is λ 4, the wavelength of the light reception signal λ 5 is λ 5, and the wavelength of the light reception signal λ 6 is λ 6, and λ 4, λ 5, and λ 6 are not equal. The light beam entering from the light port is transmitted through the first transmission surface 2122 of the mirror group and then emitted to the first wave-splitting mirror part 221, the first wave-splitting mirror part 221 can enable the light receiving signal λ 4 to be transmitted to the first detector, and the light receiving signal λ 6 and the light receiving signal λ 5 are reflected to the first reflection surface 2121 of the mirror group; the light receiving signal λ 6 and the light receiving signal λ 5 are reflected by the first reflecting surface 2121 and emitted to the second dichroic mirror 222, the second dichroic mirror 222 can enable the light receiving signal λ 5 to transmit to the second detector, and the light receiving signal λ 6 is reflected back to the first reflecting surface 2121 of the mirror group again; the light receiving signal λ 6 is reflected by the first reflecting surface 2121 and is emitted to the third wave splitting mirror 223, and the third wave splitting mirror 223 can transmit the light receiving signal λ 6 to the third detector, so that the wave splitting of the light beam is completed. It is understood that, in the present embodiment, the third wave splitter 223 may not be provided, and the light receiving signal λ 6 can still be directed to the third detector.
With reference to fig. 11 to 12, it can be understood that the receiving positions of the detectors may be respectively provided with a converging lens 23, and three converging lenses 23 correspond to the detectors one by one. The first converging lens 231 is located between the first detector and the first splitting mirror 221, the second converging lens 232 is located between the second detector and the second splitting mirror 222, and the third converging lens 233 is located between the third detector and the third splitting mirror 223.
In some alternative embodiments, the mirror group may include one mirror, and both the first reflecting surface 2121 and the first transmitting surface 2122 are disposed on the mirror. The reflector is a prism, the first reflecting surface 2121 and the first transmitting surface 2122 of the reflector are both provided with coatings, and the wave splitting mirror part 22 is glued on the first transmitting surface 2122 of the reflector through a gluing layer. The optical path may penetrate the first transmission surface 2122, so that the light beam entering from the optical port along the optical path can be directly emitted to the first transmission surface 2122, thereby completing the above wavelength division process.
In still other alternative embodiments, with continued reference to FIG. 16, the mirror group includes a first mirror 211 and a second mirror 212, a first reflective surface 2121 and a first transmissive surface 2122 are both disposed on the second mirror 212, and the wave splitting mirror 22 is glued to the first transmissive surface 2122 of the second mirror 212 by a glue layer. The second reflecting mirror 212 further has a second reflecting surface 2123 opposite to the first reflecting surface 211, and the light receiving signal entering along the optical path reaches the splitter 22 after being reflected by the first reflecting mirror 211 and the second reflecting surface 2123 in sequence. The light beam entering from the optical port along the optical path is reflected by the first reflecting mirror 211 to the second reflecting mirror 212, the light beam propagates in the second reflecting mirror 212 until reaching the second reflecting surface 2123, the light beam reflected by the second reflecting surface 2123 is further directed to the first transmitting surface 2122, and the subsequent wavelength division process is the same as above. The first reflector 211 is glued on the second transmission surface of the second reflector 212 by a glue layer, and since the light beam entering from the light port is reflected to the second reflector 212 by the first reflector 211 and then is split, by adjusting the relative position of the first reflector 211 and the second reflector 212, the relative position of the light port and the detector can be adjusted more flexibly without ensuring that the light path channel must pass through one of the detectors.
Further, referring to fig. 12 and 14, the wave splitter group 20 further includes an extended lens 213 for enhancing the intensity of the light receiving signal, the extended lens 213 is located between the first transmission surface 2122 and the wave splitter component 22, the extended lens 213 has a third transmission surface 2131 and a fourth transmission surface 2132 that are parallel to each other, the third transmission surface 2131 is attached to the first transmission surface 2122, and the wave splitter component 22 is mounted on the fourth transmission surface 2132. The extended lens 213 is a prism, the third transmission surface 2131 of the extended lens 213 is glued to the first transmission surface 2122 by a glue layer, and the wavelength splitting lens is glued to the fourth transmission surface 2132 by a glue layer. The extension lens 213 extends the optical path length of the light receiving signal between the second reflector 212 and the wave-splitting mirror 22, so that the distance between the two adjacent light receiving signals can be reduced, and the width required by the module can be reduced.
In one embodiment, the circuit processing unit includes a first receiving circuit, a second receiving circuit, and a conversion circuit. The first receiving circuit is in communication connection with each light emitter 13 of the light emitting module, the first receiving circuit is used for receiving a plurality of external electrical signals, the conversion circuit is used for converting the external electrical signals into downlink electrical signals and then inputting the downlink electrical signals into the light emitting module, and therefore each light emitter 13 can emit light emitting signals with different wavelengths. The second receiving circuit is in communication connection with each detector of the detection module and is used for receiving a plurality of detection electric signals input from the detection module, and the conversion circuit can convert the detection electric signals into uplink electric signals and then outputs the uplink electric signals.
Referring to fig. 10, the same applies when the number of the partial wave mirror pieces 22 is two. Specifically, a light beam formed by converging the light receiving signal λ 4 and the light receiving signal λ 5 enters from the light port and is emitted to the second reflecting mirror 212, and is reflected by the adhesive surface of the second reflecting mirror 212 and the first reflecting mirror 211, so that the light beam is reflected to the second reflecting surface 2123 of the second reflecting mirror 212, the second reflecting surface 2123 totally reflects the light beam to the first dichroic mirror 221, the light receiving signal λ 4 is transmitted out of the first dichroic mirror 221, the first dichroic mirror 221 reflects the light receiving signal λ 5 to the first reflecting surface 2121, the first reflecting surface 2121 reflects the light receiving signal λ 5 to the second dichroic mirror 222, and the second dichroic mirror 222 transmits out the light receiving signal λ 5.
Specifically, referring to fig. 6, the following description will be made taking a case where there are three light emitters 13 and three detectors as an example.
The first receiving circuit receives a plurality of external electrical signals, and the converting circuit converts the external electrical signals into a first downlink electrical signal, a second downlink electrical signal and a third downlink electrical signal, and transmits the first downlink electrical signal, the second downlink electrical signal and the third downlink electrical signal to the three light emitters 13, respectively. The three light emitters 13 receive corresponding downlink electric signals and then perform electro-optical conversion, the three light emitters 13 are a first light emitter, a second light emitter and a third light emitter, the first light emitter emits a light emission signal λ 1, the second light emitter emits a light emission signal λ 2, the third light emitter emits a light emission signal λ 3, the three light emission signals with different wavelengths irradiate the wave combining lens group 10, the wave combining lens group 10 combines the three light emission signals into one light beam, and the light beam irradiates the light port along the light path channel and is received by the single-port optical fiber 30.
The single-port optical fiber 30 guides a light beam formed by combining a plurality of light receiving signals to an optical port, the light beam entering the device from the optical port is emitted to the wave splitting lens group 20 along an optical path channel, the wave splitting lens group 20 splits the light beam into a first light receiving signal λ 4, a second light receiving signal λ 5 and a third light receiving signal λ 6, and each light receiving signal is emitted to each corresponding detector and received. The three detectors are respectively a first detector, a second detector and a third detector, the first detector converts the first light receiving signal lambda 4 into a first uplink electric signal and outputs the first uplink electric signal, similarly, the second detector converts the second light receiving signal lambda 5 into a second uplink electric signal and outputs the second uplink electric signal, and the third detector converts the third light receiving signal lambda 6 into a third uplink electric signal and outputs the third uplink electric signal.
An embodiment of the present invention 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 embodiments. The end part of the single-port optical fiber 30 is positioned at an optical port, light emitted by the single-port optical fiber 30 enters the single-fiber multidirectional light transceiver from the optical port, and the light emitted by the single-port optical fiber 30 can be transmitted along the optical path channel; similarly, the light emitted by the light emitting module can also be emitted to the single-port optical fiber 30 at the optical port through the optical path channel after the light is combined.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (13)
1. A single-fiber multidirectional optical transceiver, comprising:
the optical port is used for installing a single-port optical fiber;
the light-emitting module comprises at least two light emitters, the light emitters are arranged in parallel at intervals, and the light emitting directions of the light emitters are along a first direction;
the detection module comprises at least two detectors, the detectors are arranged at intervals, and the light emitting directions of the detectors are along a second direction;
the wave combining lens group is used for converging light emission signals emitted from all the light emitters, and the light emission signals are converged and then emitted to the light port;
the optical receiving signal emitted from the optical port can be emitted to the wave splitter group, and the wave splitter group is used for separating each optical receiving signal entering from the optical port and reflecting each optical receiving signal to the corresponding detector;
and the circuit processing unit is in communication connection with the light emitting module and the detection module.
2. The apparatus according to claim 1, wherein: the first direction is parallel to the second direction.
3. The apparatus according to claim 1, wherein: the wave combining lens group comprises at least two wave combining lens pieces arranged along the first direction, the wave combining lens pieces are the same as the light emitters in number, the wave combining lens pieces correspond to the light emitters in position one to one, the wave combining lens pieces are divided into at least two first wave combining lenses and one second wave combining lens, the second wave combining lens is provided with a convergence part opposite to the light port, each first wave combining lens can reflect a corresponding light emission signal to the convergence part, the second wave combining lens can enable the corresponding light emission signal to transmit to the convergence part, and the light emission signal can emit to the light port after being converged at the convergence part.
4. The apparatus according to claim 3, characterized in that: each first wave combining mirror is provided with a first end face and a second end face which are opposite to each other, the first end face of each first wave combining mirror is far away from the second wave combining mirror, and the first wave combining mirror can enable light emission signals incident from the first end face to transmit through.
5. The apparatus according to claim 1, wherein: the wave splitting mirror group comprises at least two wave splitting mirror pieces and a reflecting mirror group, the reflecting mirror group is used for reflecting the light receiving signals to the wave splitting mirror pieces, the number of the wave splitting mirror pieces is the same as that of the detectors, and the wave splitting mirror pieces correspond to the detectors in position one to one.
6. The apparatus according to claim 5, wherein: the reflector group comprises reflector pieces, the reflector pieces are used for reflecting light receiving signals entering from the light ports, the wave-splitting mirror pieces are arranged along the second direction, and the wave-splitting mirror pieces are respectively used for reflecting the light receiving signals to the corresponding detectors.
7. The apparatus according to claim 6, characterized in that: the light port is correspondingly provided with a light path channel, the included angle between the emergent light of the light path channel and the normal direction of the reflecting surface of the reflector piece is 13-50 degrees, and the emergent light formed by each wave splitter piece is parallel to the axial direction of the light port.
8. The apparatus according to claim 5, wherein: the speculum group has relative first plane of reflection and first transmission face, the partial wave mirror spare is located respectively first transmission face with correspond between the detector, the partial wave mirror spare can make a light received signal transmission to correspond the detector, at least one the partial wave mirror spare can reflect remaining light received signal extremely first plane of reflection, the remaining light received signal of first plane of reflection is to adjacent next the partial wave mirror spare.
9. The apparatus according to claim 8, wherein: the reflecting mirror group comprises a first reflecting mirror and a second reflecting mirror, the second reflecting mirror is provided with a second reflecting surface, and light receiving signals entering from the light port sequentially pass through the first reflecting mirror to be reflected and then reach the wave splitting mirror component after being reflected by the second reflecting surface.
10. The apparatus according to claim 9, wherein: the wave splitting mirror group further comprises an extension lens used for enhancing the intensity of light receiving signals, the extension lens is located between the first transmission surface and the wave splitting mirror piece, the extension lens is provided with a third transmission surface and a fourth transmission surface which are parallel to each other, the third transmission surface is attached to the first transmission surface, and the wave splitting mirror piece is 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 lens group and the wave combining lens group are sequentially arranged along the direction far away from the light port.
12. The apparatus according to any one of claims 1 to 10, wherein the circuit processing unit includes:
a first receiving circuit for receiving an external electrical signal;
a second receiving circuit for receiving a detection electric signal input from the detection module; and
and the conversion circuit is used for converting the external electric signal into a downlink electric signal and then inputting the downlink electric signal to the light-emitting module, and converting the detection electric signal into an uplink electric signal and then outputting the uplink electric signal.
13. A light module, comprising:
the single-fiber multidirectional optical transceiver device according to any one of claims 1 to 12; and
and the end part of the single-port optical fiber is positioned at the optical port.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111084111.1A CN115808749A (en) | 2021-09-14 | 2021-09-14 | Single-fiber multidirectional light transmitting and receiving device and optical module |
| PCT/CN2022/112226 WO2023040536A1 (en) | 2021-09-14 | 2022-08-12 | Single-fiber multi-directional optical transceiver and optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111084111.1A CN115808749A (en) | 2021-09-14 | 2021-09-14 | Single-fiber multidirectional light transmitting and receiving device and optical module |
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| CN115808749A true CN115808749A (en) | 2023-03-17 |
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| CN202111084111.1A Pending CN115808749A (en) | 2021-09-14 | 2021-09-14 | Single-fiber multidirectional light transmitting and receiving device and optical module |
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| WO (1) | WO2023040536A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117055179A (en) * | 2023-10-12 | 2023-11-14 | 武汉钧恒科技有限公司 | 50G PON Combo OLT three-mode compatible optical device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003490A (en) * | 2004-06-16 | 2006-01-05 | Matsushita Electric Ind Co Ltd | Optical transmitter/receiver |
| CN104678515B (en) * | 2015-02-11 | 2016-03-02 | 武汉锐奥特科技有限公司 | For the optical device light channel structure of single fiber bi-directional |
| CN104991320B (en) * | 2015-07-24 | 2017-06-16 | 福州百讯光电有限公司 | A kind of multi-wavelength Snigle and its method of work |
| WO2018170828A1 (en) * | 2017-03-23 | 2018-09-27 | 华为技术有限公司 | Bidirectional optical assembly, optical network unit, optical line terminal, and passive optical network system |
| CN210243908U (en) * | 2019-09-03 | 2020-04-03 | 深圳市迅特通信技术有限公司 | Single-fiber bidirectional optical module |
| CN110912610A (en) * | 2019-10-29 | 2020-03-24 | 中航海信光电技术有限公司 | Wavelength division multiplexing receiving and transmitting integrated optical module, system and implementation method |
-
2021
- 2021-09-14 CN CN202111084111.1A patent/CN115808749A/en active Pending
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- 2022-08-12 WO PCT/CN2022/112226 patent/WO2023040536A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117055179A (en) * | 2023-10-12 | 2023-11-14 | 武汉钧恒科技有限公司 | 50G PON Combo OLT three-mode compatible optical device |
| CN117055179B (en) * | 2023-10-12 | 2023-12-26 | 武汉钧恒科技有限公司 | 50G PON Combo OLT three-mode compatible optical device |
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| WO2023040536A1 (en) | 2023-03-23 |
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