WO2016049858A1

WO2016049858A1 - Multipath optical transceiver module and associated equipment

Info

Publication number: WO2016049858A1
Application number: PCT/CN2014/087959
Authority: WO
Inventors: 李书; 赵佳生; 陈健
Original assignee: 华为技术有限公司
Priority date: 2014-09-30
Filing date: 2014-09-30
Publication date: 2016-04-07
Also published as: CN105684327A; CN105684327B

Abstract

A multipath optical transceiver module and an associated equipment. The multipath optical transceiver module includes a first optical waveguide device, a testing device, a first optical receiver, a first optical transmitter for transmitting data optical signals and a second optical transmitter for transmitting test optical signals; the optical waveguide device includes: a first waveguide set comprising waveguides of X paths, a second waveguide set comprising waveguides of X paths, a third waveguide set comprising waveguides of X paths, a forth waveguide set comprising waveguides of X paths, a fifth waveguide set comprising waveguides of X paths, a wavelength division multiplexer and a set of optical splitters; the testing device is used for testing the backward scattered light which corresponds to the test optical signal and is received by the first optical receiver. The embodiments of the present invention provide a multipath optical transceiver module with a function of optical path monitoring.

Description

Multi-channel optical transceiver module and related equipment

Technical field

The present invention relates to the field of optical communication technologies, and in particular, to a multi-channel optical transceiver module and related equipment.

Background technique

The development of modern society, the explosion of information volume, especially the advent of the era of big data, the demand for network throughput has been increasing. Among them, optical transmission is characterized by its unique ultra-high bandwidth, low electromagnetic interference and so on. On the one hand, it has an indispensable position in application scenarios such as long-distance transmission (such as transport networks). On the other hand, as users' demand for bandwidth continues to increase, traditional copper broadband access systems are increasingly facing bandwidth bottlenecks. In this case, the optical access network using optical transmission becomes a strong competitor of the next generation broadband access network.

The optical communication network mainly exists in the form of passive optical network (English: passive optical network, PON). PON technology is a point-to-multipoint optical fiber transmission and access technology. In the PON, the downlink generally adopts the broadcast mode, and the uplink generally adopts the time division multiple access method. PON can be flexibly composed of topologies such as tree, star and bus.

Figure 1 shows a common structure of an existing PON. The tree PON structure shown in FIG. 1 includes an optical network unit (English: optical network unit, ONU) A03, an optical distribution network A02, and an optical line terminal (English: optical line terminal, abbreviation: OLT). A01. Passive means that the optical distribution network (English: optical distribution network, abbreviation: ODN) does not contain any active electronic devices and electronic power supplies, all of which are composed of passive components such as optical splitters (English: splitter), so Its management and maintenance costs are lower.

In addition, with the large-scale deployment of optical networks and the extensive use of optical fibers, the need for monitoring optical networks is also growing. The quality of optical network mainly comes from the factors such as fiber bending, fiber connector end face contamination and fiber breakage. These factors directly affect the communication quality of optical networks. Therefore, it is necessary to perform real-time evaluation and diagnosis of the optical network status, locate fault points, etc., in order to find potential risks as early as possible. Optical fiber is different from ordinary electrical signal lines. As a pure passive medium, only optical signals are transmitted in it.

The optical transceiver module is deployed in an optical communication device such as an OLT, and the high integration degree is a type of the optical transceiver module. development trend. At present, there are multiple optical transceiver modules that can support multiple transceivers in the industry. One or more multi-channel optical transceiver modules can be deployed in one OLT. However, the industry has not been able to design a multi-channel optical transceiver module with optical path monitoring.

Summary of the invention

The embodiment of the invention provides a multi-channel optical transceiver module and related equipment, in order to provide a multi-channel optical transceiver module with optical path monitoring function.

A first aspect of the present invention provides a multi-channel optical transceiver module, which may include:

a first optical waveguide device, a detecting device, a first optical receiver, a first optical transmitter for transmitting a data optical signal, and a second optical transmitter for transmitting a test optical signal;

The first optical waveguide device includes: a wavelength division multiplexer, an optical splitter group, a first waveguide group including an X-way waveguide, a second waveguide group including an X-way waveguide, and a third waveguide group including an X-way waveguide a fourth waveguide group including an X-way waveguide and a fifth waveguide group including an X-way waveguide, wherein the X is an integer greater than 1;

a common end of the wavelength division multiplexer is coupled to one end of the first waveguide group;

a first branch end of the wavelength division multiplexer is coupled to a transmitting end of the first optical transmitter through the second waveguide set, and a second branch end of the wavelength division multiplexer passes the third waveguide a group coupled to the junction end of the optical splitter group;

a first branch end of the optical splitter set is coupled to a receiving end of the first optical receiver through the fourth waveguide set; a second branch end of the optical splitter set passes the fifth waveguide a group coupled to a transmitting end of the second optical transmitter;

The test device is configured to detect a backscattered light signal corresponding to the test light signal received by the first optical receiver.

In conjunction with the first aspect, in a first possible implementation of the first aspect,

The optical waveguide device further includes a first coupler;

Wherein the second branch end of the optical splitter group is coupled to the transmitting end of the second optical transmitter through the fifth waveguide set and the first coupler; wherein the second optical transmitter A transmitting end is coupled to an input of the first coupler, and a second branch end of the optical splitter set is coupled to an output of the first coupler through the fifth waveguide set.

In conjunction with the first aspect, in a second possible implementation of the first aspect,

The multi-channel optical transceiver module further includes a second coupler;

Wherein the second branch end of the optical splitter group is coupled to the transmitting end of the second optical transmitter through the fifth waveguide set and the second coupler; wherein the second optical transmitter The transmitting end is coupled to the input of the second coupler, and the second branch end of the optical splitter set is coupled to the first output of the second coupler via the fifth waveguide set.

In conjunction with the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the multiple optical transceiver module further includes a first optical path connecting device; wherein the optical splitter A second branch end of the set is coupled to an output of the second coupler via the fifth waveguide set and the first optical path connecting means.

With reference to the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the multiple optical transceiver module further includes a second An optical waveguide device and a second optical path connecting device;

The second output end of the second coupler is coupled to the waveguide group in the second optical waveguide device through a second optical path connecting device.

In conjunction with the second possible implementation of the first aspect, in a fifth possible implementation of the first aspect, the first coupler is a wavelength divider or a multiplexer.

In conjunction with the fifth possible implementation of the first aspect, in a sixth possible implementation of the first aspect, the first coupler is an arrayed waveguide grating.

Combining the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect The fifth possible implementation manner of the first aspect or the sixth possible implementation manner of the first aspect, in the seventh possible implementation manner of the first aspect, the second optical transmitter is Adjust the laser.

Combining the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect Embodiment or a fifth possible implementation of the first aspect or a sixth possible implementation of the first aspect or a seventh possible implementation of the first aspect, the eighth possible aspect of the first aspect In an embodiment, the first optical waveguide device is a planar optical waveguide device or a stereoscopic optical waveguide device.

In conjunction with the eighth possible implementation of the first aspect, in a ninth possible implementation of the first aspect, the first optical waveguide device is a planar optical waveguide chip.

A second aspect of the present invention provides an optical line terminal, including: any one of the multiple optical transceiver modules according to the embodiment of the present invention.

A third aspect of the present invention provides an optical network unit, including: at least one multiplex optical transceiver module according to an embodiment of the present invention.

A passive optical network PON according to a fourth aspect of the present invention includes:

An optical line terminal OLT, an optical network unit ONU, and a passive optical splitter for connecting the OLT and the ONU; wherein the OLT and/or the ONU comprise at least one embodiment as provided by the embodiment of the present invention Any kind of multi-channel optical transceiver module

It can be seen that, in the multiple optical transceiver module provided in the embodiment of the present invention, the first optical waveguide device and the detecting device and the second optical transmitter for transmitting the test optical signal are organically combined, and the first optical waveguide device provides multiple paths. The waveguide enables the multi-channel optical transceiver module to support multiple transmission and reception. The first receiver can be used for receiving data optical signals sent by other devices to the multiple optical transceiver modules, and can also be used for receiving backscattered light corresponding to the test optical signals. The signal, so that the multiplexing of the first receiver is realized, and the detecting device can detect the backscattered optical signal corresponding to the test optical signal received by the first optical receiver, thereby implementing the multi-channel optical transceiver module. Light path detection function. That is to say, the above solution provides a multi-channel optical transceiver module with optical path monitoring function.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments and the prior art description will be briefly described below. Obviously, the drawings in the following description are only some implementations of the present invention. For example, other drawings may be obtained from those of ordinary skill in the art based on these drawings without any inventive labor.

1 is a schematic structural diagram of a multi-path optical transceiver module according to an embodiment of the present invention;

2 is a schematic structural diagram of another multi-channel optical transceiver module according to an embodiment of the present invention;

3 is a schematic structural diagram of another multi-path optical transceiver module according to an embodiment of the present invention;

4 is a schematic structural diagram of another multi-path optical transceiver module according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another multi-path optical transceiver module according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of another multi-path optical transceiver module according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of an optical line terminal according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an optical network unit according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a passive optical network according to an embodiment of the present invention.

detailed description

In order to make the object, the features and the advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present invention and the above drawings are used to distinguish different objects, and are not intended to describe a specific order. . Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example, a process, system, system, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products or equipment.

Referring to FIG. 2, a multi-channel optical transceiver module according to an embodiment of the present invention may include: a first optical waveguide device 120, a first optical receiver 140, a detecting device 150, and a first light for transmitting a data optical signal. Transmitter 110 and second optical transmitter 130 for transmitting test optical signals.

The first optical waveguide device 120 includes a wavelength division multiplexer 126, an optical splitter group 127, a first waveguide group 121 including an X-way waveguide, a second waveguide group 122 including an X-way waveguide, and a third including an X-way waveguide. A waveguide group 123, a fourth waveguide group 124 including an X-way waveguide, and a fifth waveguide group 125 including an X-way waveguide. The X is an integer greater than one.

Where, for example, X can be equal to 2, 3, 4, 6, 7, 10 or other values. The first waveguide group 121 may include, for example, a 2-way waveguide, a 3-way waveguide, a 4-way waveguide, a 6-way waveguide, a 7-way waveguide, a 10-way waveguide, and a 12-channel waveguide. Conductor or other multi-channel waveguide.

The wavelength division multiplexer 126 in the first optical waveguide device 120 may have a common end, a first branch end, and a second branch end.

The common end of the wavelength division multiplexer 126 in the first optical waveguide device 120 is coupled to one end of the first waveguide group 121. The other end of the first waveguide group 121 can be coupled to an optical network connection port of the multiplexed optical transceiver module. That is, the optical signal transmitted by the multiplexed optical transceiver module can be transmitted to the optical network via the first waveguide group 121, and the optical signal from the optical network can also reach the first optical waveguide device 120 via the first waveguide group 121. Wavelength division multiplexing (English: wavelength-division multiplexing, abbreviation: WDM) 126.

The first branch end of the wavelength division multiplexer 126 is coupled to the transmitting end of the first optical transmitter 110 through the second waveguide group 122. The second branch end of the wavelength division multiplexer 126 is coupled to the combining end of the optical splitter group 127 through the third waveguide group 123.

The optical splitter group 127 may include X optical splitters, and the X optical splitters included in the optical splitter group 127 and the X-way waveguides included in the third waveguide set 123 are in one-to-one correspondence. Each of the optical splitters included in the optical splitter group 127 may have a combined end, a first branch end, and a second branch end. The split ratio of some or all of the optical splitters included in the optical splitter group 127 may be 1:9, 2:8, 1.5:8.5, 1.75:8.35, or other split ratios. Optionally, the splitting ratios of some or all of the optical splitters included in the optical splitter group 127 may be the same. Of course, the split ratios of the optical splitters included in the optical splitter group 127 may also be different from each other.

The first branch end of the optical splitter group 127 is coupled to the receiving end of the first optical receiver 140 through the fourth waveguide group 124. Specifically, the first branch end of each optical splitter included in the optical splitter group 127 is coupled to the receiving end of the first optical receiver 140 through a different path waveguide included in the fourth waveguide set 124. A second branch end of the optical splitter bank 127 is coupled to a transmit end of the second optical transmitter 130 by the fifth waveguide set 125. Specifically, the second branch end of each optical splitter included in the optical splitter group 127 is coupled to the transmitting end of the second optical transmitter 130 through a different path waveguide included in the fifth waveguide set 125.

The test device 150 is configured to detect the backscattered light signal corresponding to the test light signal received by the first optical receiver 140.

The data optical signal sent by the first optical transmitter 110 and the test sent by the second optical transmitter 130 The wavelength of the optical signal is different. For example, the wavelength of the test optical signal can be 1310 nm, for example, the wavelength of the data optical signal can be 1490 nm. For another example, the wavelength of the data light signal can be 1310 nm, for example, the wavelength of the test light signal can be 1490 nm. The test optical signal is mainly used to test the communication quality of the optical network, and the data optical signal carries the service data, that is, the data optical signal can be regarded as a service optical signal transmitted on the optical network.

It can be seen that the multi-path optical transceiver module provided in this embodiment organically combines the first optical waveguide device and the detecting device and the second optical transmitter for transmitting the test optical signal, and the first optical waveguide device provides the multi-path waveguide. The multi-channel optical transceiver module can support multiple transceivers, and the first receiver can be used for receiving data optical signals sent by other devices to the multiple optical transceiver modules, and can also be used for receiving backscattered optical signals corresponding to the test optical signals. In this way, the multiplexing of the first receiver is realized, and the detecting device can detect the backscattered optical signal corresponding to the test optical signal received by the first optical receiver, thereby realizing the multiplexing of the optical transceiver module. Optical path detection function. That is to say, the above solution provides a multi-channel optical transceiver module with optical path monitoring function.

It can be understood that the first optical transmitter 110 can be, for example, an optical transmitter capable of transmitting X-channel data optical signals in parallel, wherein the X-channel waveguide included in the second waveguide group 122 can be transmitted with the X-channel data transmitted by the first optical transmitter 110. The optical signals correspond one by one. Alternatively, the first optical transmitter 110 may also be an optical transmitter set including X optical transmitters, wherein each of the X optical transmitters included in the first optical transmitter 110 may transmit one optical optical signal. The X-way waveguide included in the second waveguide group 122 may be in one-to-one correspondence with the X optical transmitters included in the first optical transmitter 110, that is, the X-channel waveguide included in the second waveguide group 122 may be the first The X-channel data optical signals transmitted by the optical transmitter 110 are in one-to-one correspondence.

It can be understood that the first optical receiver 140 can be, for example, an optical receiver capable of receiving X-channel optical signals in parallel. Or the first optical transmitter 140 may also be an optical receiver set including X optical receivers, each of the X optical receivers included in the first optical receiver 140 may receive one optical signal, the fourth waveguide The X-way waveguides included in the group 124 can be in one-to-one correspondence with the X optical receivers included in the first optical receiver 140. That is to say, the X-way waveguides included in the fourth waveguide group 124 can be in one-to-one correspondence with the X-channel optical signals received by the first optical receiver 140.

Alternatively, the first optical waveguide device 120 may further include a first coupler. For example, referring to FIG. 3, the multi-channel optical transceiver module of the structure shown in FIG. 3 is based on the multi-channel optical transceiver module of the structure shown in FIG. The first coupler 128 is added, wherein the first coupler 128 is one of the components of the first optical waveguide device 120.

The second branch end of the optical splitter group 127 is coupled to the transmitting end of the second optical transmitter 130 through the fifth waveguide group 125 and the first coupler 128. Wherein the transmitting end of the second optical transmitter 130 is coupled to the input end of the first coupler 128, and the second branch end of the optical splitter set 127 passes through the fifth waveguide set and the output of the first coupler coupling. The first coupler 128 has a routing function, and the first coupler 128 can be used to output an optical signal input from the output of the first coupler 128 from one of the outputs of the first coupler 128. The optical signal outputted by one of the outputs of the first coupler 128 can reach the optical splitter bank 127 via one of the waveguides of the fifth waveguide group 125.

Still alternatively, the multiplexed optical transceiver module may further include a second coupler 160. Referring to FIG. 4, the multiplexed optical transceiver module of the structure illustrated in FIG. 4 adds a second coupler 160 to the multiplexed optical transceiver module of the structure illustrated in FIG. Different from the multiplexed optical transceiver module of the structure shown in FIG. 3, in the multiplexed optical transceiver module of the structure shown in FIG. 4, the first coupler 128 is not one of the components of the first optical waveguide device 120.

The second branch end of the optical splitter group 127 is coupled to the transmitting end of the second optical transmitter 130 through the fifth waveguide set 125 and the second coupler 160. Wherein the transmitting end of the second optical transmitter 130 is coupled to the input end of the second coupler 160, and the second branch end of the optical splitter set 127 passes through the fifth waveguide set 125 and the second coupler The first output of 160 is coupled. Wherein, the second coupler 160 has a routing function, and therefore, the second coupler 160 can be used to output an optical signal input from the output end of the second coupler 160 from one of the outputs of the second coupler 160. The optical signal output from one of the output ends of the second coupler 160 can reach the optical splitter group 127 via one of the waveguides of the fifth waveguide group 125.

Optionally, the multiple optical transceiver module may further include a first optical path connecting device. The first optical path connecting device may be, for example, an optical fiber array. For example, referring to FIG. 5, the multi-path optical transceiver module of the structure illustrated in FIG. 5 further adds the first optical path connecting device 170 to the multi-channel optical transceiver module of the structure illustrated in FIG.

The second branch end of the optical splitter group 127 can be coupled to the output end of the second coupler 160 through the fifth waveguide group 125 and the first optical path connecting device 170, one of the second couplers 160. Output The optical signal outputted by the terminal can reach the optical splitter group 127 via one of the first optical path connecting device 170 and the fifth waveguide group 125.

The optical signal transmission mechanism of the multi-channel optical transceiver module of the structure shown in FIG. 2 is briefly described below.

The X-channel data optical signal sent by the first optical transmitter 110 can reach the wavelength division multiplexer 126 through the second waveguide group 122, and the X-channel data optical signal reaching the wavelength division multiplexer 126 is transmitted through the first waveguide group. 121 is conducted to the optical network.

The X-way test optical signal from the second optical transmitter 130 is conducted through the fifth waveguide group 125 to the X optical splitters included in the optical splitter group 127, wherein the conduction to the optical splitter group 127 includes The test optical signals of the X optical splitters are split by the X optical splitters and then passed through the third waveguide group 123 to the wavelength division multiplexer 126, and the test optical signals arriving at the wavelength division multiplexer 126 are subjected to the first A waveguide group 121 is conducted to the optical network.

Wherein, the test optical signal has a certain degree of backscattering when propagating forward in the optical fiber of the optical network, and the part of the test light signal of the backscattering mainly originates from the reed scattering inside the optical fiber, and excessively appears in the optical fiber. In those areas where the bend, the fiber connector is dirty or even broken, the backscattered test light signal will be abnormal, and the backscattered X-ray test light signal can reach the wavelength division multiplexer 126 via the first waveguide group 121 to arrive. The backscattered test optical signal of the wavelength division multiplexer 126 reaches the optical splitter group 127 via the wavelength division multiplexer 126 and the third waveguide group 123, and reaches the X optical splitters included in the optical splitter group 127. The backscattered X-channel test optical signal is split by the optical splitter and then passed through the fourth waveguide set 124 to the first optical receiver 140, and the detecting device 150 can receive the portion of the first optical receiver 140. The scattered X-ray test optical signal is analyzed to obtain the optical path quality of the corresponding optical fiber of the optical network.

The optical signal transmission mechanism of the multi-channel optical transceiver module of the structure shown in FIG. 3 or FIG. 4 or FIG. 5 will be briefly described below.

After a test optical signal sent by the second optical transmitter 130 is routed through a coupler (such as the first coupler 128 or the second coupler 160), it is conducted from one of the waveguides of the fifth waveguide group 125 to the The optical splitter group 127 includes one of the optical splitters, wherein the test optical signal transmitted to one of the optical splitters included in the optical splitter group 127 is split by the optical splitter The waveguide optical signal is passed through one of the third waveguide groups 123 to the wavelength division multiplexer 126, and the test optical signal arriving at the wavelength division multiplexer 126 is conducted to the optical network via one of the waveguides in the first waveguide group 121.

Wherein, the test optical signal has a certain degree of backscattering when propagating forward in the optical fiber of the optical network, and the part of the test light signal of the backscattering mainly originates from the reed scattering inside the optical fiber, and excessively appears in the optical fiber. In those areas where the bend, the fiber connector is contaminated or even broken, the backscattered test light signal will be abnormal, and the backscattered test light signal may reach the wavelength division multiplexing via one of the waveguides in the first waveguide group 121. The 126, the backscattered test optical signal arriving at the wavelength division multiplexer 126 reaches one of the optical branches included in the optical splitter group 127 via one of the wavelength division multiplexer 126 and the third waveguide group 123. The backscattered test light signal of one of the optical splitters included in the optical splitter group 127 is split by the one of the optical waveguides and then passed through one of the fourth waveguide sets 124 to reach the first The optical receiver 140, the detecting device 150 can analyze the part of the backscattered test optical signal received by the first optical receiver 140, thereby obtaining the optical path quality of the corresponding optical fiber of the optical network. . Based on the above mechanism, the optical path quality of each fiber of the optical network can be separately detected. Of course, it is also possible to detect the optical path quality of the optical fibers of the optical network in parallel.

Optionally, the multiple optical transceiver module may further include a second optical waveguide device and a second optical path connecting device. For example, referring to FIG. 6, the multiplexed optical transceiver module of the structure illustrated in FIG. 6 further adds the second optical waveguide device 190 and the second optical path connecting device 180 to the multiplexed optical transceiver module of the structure illustrated in FIG.

The second output end of the second coupler 160 is coupled to the waveguide group in the second optical waveguide device 190 through the second optical path connecting device 180. Of course, if the number of outputs of the second coupler 160 is sufficiently large, the second coupler 160 can also be coupled to the waveguide sets in other more optical waveguide devices through other optical path connecting devices.

The internal structure of the second optical waveguide device 190 may be the same as or similar to the internal structure of the first optical waveguide device 120.

As shown in FIG. 6, the multi-channel optical transceiver module may further include a second optical receiver 230 and a third optical transmitter 210.

The second optical waveguide device 190 may include a wavelength division multiplexer 196, an optical splitter group 197, a first waveguide group 191 including a Y-way waveguide, a second waveguide group 192 including a Y-way waveguide, and a Y-channel waveguide. The third waveguide group 193, the fourth waveguide group 194 including the Y-way waveguide, and the fifth waveguide group 195 including the Y-way waveguide. The Y is an integer greater than one. The Y and the X may be equal or unequal.

Alternatively, the first coupler 128 can be, for example, a wavelength divider (eg, an arrayed waveguide grating or other type of wavelength divider) or a multiplexer.

Alternatively, the second coupler 160 can be, for example, a wavelength divider (such as an arrayed waveguide grating or other type of wavelength divider) or a multiplexer.

Optionally, the second optical transmitter 130 is a tunable laser. For example, it is assumed that the first coupler 128 or the second coupler 160 is an arrayed waveguide grating, each exit of the arrayed waveguide grating corresponding to a different wavelength, and the difference between these wavelengths is usually not large, for example, within a range of 1 nm. In this case, the second optical transmitter 130 can transmit test optical signals of different wavelengths under the control of the detecting device 150, and the wavelength of the test optical signal can be shifted near the central wavelength (eg, 1310 nm), thereby realizing the test light. The different output outputs of the signal array waveguide grating, the test optical signal can be transmitted in different waveguides of the fifth waveguide group, and finally the test coverage of the optical fiber corresponding to each waveguide in the optical network is realized.

Alternatively, the first optical waveguide device 120 may be a planar optical waveguide device or a stereoscopic optical waveguide device or other type of optical waveguide device. The second optical waveguide device 190 can be a planar optical waveguide device or a stereoscopic optical waveguide device or other type of optical waveguide device.

A planar optical-wave circuit (PLC) device can be, for example, a planar optical waveguide chip. The stereoscopic optical waveguide device can be, for example, a stereoscopic optical waveguide chip.

Referring to FIG. 7 , an embodiment of the present invention further provides an optical line terminal 300, which may include: at least one multiplexed optical transceiver module 310, wherein the multiplexed optical transceiver module 310 may be any one of the foregoing embodiments. Road optical transceiver module.

Referring to FIG. 8 , an embodiment of the present invention further provides an optical network unit 400, which may include: at least one multi-channel optical transceiver module 410, wherein the multiple optical transceiver module 410 may be any one of the foregoing embodiments. Road optical transceiver module.

Referring to FIG. 9, an embodiment of the present invention further provides a passive optical network PON, including:

Optical line terminal 510, optical network unit 530, and for connecting optical line terminal 510 and optical network Light distribution network 520 of element 530. The optical line terminal 510 and/or the optical network unit 530 may include at least one of the multiple optical transceiver modules as described in the foregoing embodiments.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In summary, the multi-path optical transceiver module provided in the embodiment of the present invention organically combines the first optical waveguide device and the detecting device and the second optical transmitter for transmitting the test optical signal, and the first optical waveguide device provides the multi-path waveguide. The multi-channel optical transceiver module can support multiple transceivers, and the first receiver can be used for receiving data optical signals sent by other devices to the multiple optical transceiver modules, and can also be used for receiving backscattered optical signals corresponding to the test optical signals. In this way, the multiplexing of the first receiver is realized, and the detecting device can detect the backscattered optical signal corresponding to the test optical signal received by the first optical receiver, thereby realizing the multiplexing of the optical transceiver module. Optical path detection function. That is to say, the above solution provides a multi-channel optical transceiver module with optical path monitoring function.

In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above units is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated. Go to another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; and the modifications or substitutions do not deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

A multi-channel optical transceiver module, comprising:

a first optical waveguide device, a detecting device, a first optical receiver, a first optical transmitter for transmitting a data optical signal, and a second optical transmitter for transmitting a test optical signal;

The first optical waveguide device includes: a wavelength division multiplexer, an optical splitter group, a first waveguide group including an X-way waveguide, a second waveguide group including an X-way waveguide, and a third waveguide group including an X-way waveguide a fourth waveguide group including an X-way waveguide and a fifth waveguide group including an X-way waveguide, wherein the X is an integer greater than 1;

a common end of the wavelength division multiplexer is coupled to one end of the first waveguide group;

a first branch end of the wavelength division multiplexer is coupled to a transmitting end of the first optical transmitter through the second waveguide set, and a second branch end of the wavelength division multiplexer passes the third waveguide a group coupled to the junction end of the optical splitter group;

a first branch end of the optical splitter set is coupled to a receiving end of the first optical receiver through the fourth waveguide set; a second branch end of the optical splitter set passes the fifth waveguide a group coupled to a transmitting end of the second optical transmitter;

The test device is configured to detect a backscattered light signal corresponding to the test light signal received by the first optical receiver.
The multiplex optical transceiver module according to claim 1, wherein

The optical waveguide device further includes a first coupler;

Wherein the second branch end of the optical splitter group is coupled to the transmitting end of the second optical transmitter through the fifth waveguide set and the first coupler; wherein the second optical transmitter A transmitting end is coupled to an input of the first coupler, and a second branch end of the optical splitter set is coupled to an output of the first coupler through the fifth waveguide set.
The multiplex optical transceiver module according to claim 1, wherein

The multi-channel optical transceiver module further includes a second coupler;

Wherein the second branch end of the optical splitter group is coupled to the transmitting end of the second optical transmitter through the fifth waveguide set and the second coupler; wherein the second optical transmitter a transmitting end coupled to an input end of the second coupler, the second branch end of the optical splitter set passing through the fifth waveguide A set is coupled to a first output of the second coupler.
The multiplexed optical transceiver module according to claim 3, wherein

The multiplexed optical transceiver module further includes a first optical path connecting device; wherein a second branch end of the optical splitter group passes through the fifth waveguide group and the first optical path connecting device and the second coupler The output is coupled.
The multiplexed optical transceiver module according to claim 3 or 4, wherein the multiplexed optical transceiver module further comprises a second optical waveguide device and a second optical path connecting device;

The second output end of the second coupler is coupled to the waveguide group in the second optical waveguide device through a second optical path connecting device.
The multiplexed optical transceiver module according to claim 3, wherein the first coupler is a wavelength divider or a multiplexer.
The multiplexed optical transceiver module according to claim 6, wherein the first coupler is an arrayed waveguide grating.
The multiplexed optical transceiver module according to any one of claims 1 to 7, wherein the second optical transmitter is a tunable laser.
The multiplexed optical transceiver module according to any one of claims 1 to 8, wherein the first optical waveguide device is a planar optical waveguide chip.
An optical line terminal, comprising: at least one multiplex optical transceiver module according to any one of claims 1-9.
An optical network unit, comprising: at least one multiplex optical transceiver module according to any one of claims 1-9.
A passive optical network PON, comprising:

An optical line terminal OLT, an optical network unit ONU, and an optical distribution network for connecting the OLT and the ONU; wherein the OLT and/or the ONU comprise the method of any one of claims 1 to Multi-channel optical transceiver module.