Optical module and optical network device
Patent Information
- Application Number
- CN202510404423.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-29
- Publication Date
- 2026-09-29
AI Technical Summary
[0042]本申请在上述各方面提供的实现的基础上，还可以进行进一步组合以提供更多实现。
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Figure CN122844963A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical device technology, and in particular to an optical module and an optical network device. Background Technology
[0002] The artificial intelligence (AI) market is booming, and with the explosive growth in computing power demand for large-scale models, short-range optical interconnects play a crucial role in AI clusters. Optical modules are the key interface modules for photoelectric conversion between devices and optical fibers, playing a vital role in AI cluster networks. Driven by the AI market, the demand for optical modules continues to grow, becoming crucial for improving the communication capabilities of computing clusters, necessitating an increase in optical module capacity. Summary of the Invention
[0003] This application provides an optical module and an optical network device to increase the capacity of the optical module.
[0004] In a first aspect, embodiments of this application provide an optical module. The optical module includes a driving unit, a beam splitting unit, and K modulation unit groups; each modulation unit group includes X modulation units; the driving unit is connected to the K*X modulation units within the K modulation unit groups; K and X are both integers greater than 1; the beam splitting unit includes X input ports and K*X output ports; the K*X output ports are connected one-to-one with the K*X modulation units in the K modulation unit groups. The beam splitting unit receives X first optical signals from a first light source through the X input ports, the X optical signals having different wavelengths; it splits each of the X first optical signals into K second optical signals, and the K second optical signals split from the same first optical signal are output one-to-one to the K modulation units, and the K modulation units belong to different modulation unit groups; the second optical signals split from different first optical signals enter different modulation units. The driving unit is used to send N*X service signals one-to-one to N*X modulation units among the K*X modulation units, where N is a positive integer less than or equal to K; any one of the N*X modulation units is used to modulate one received service signal onto one optical signal to obtain one modulated optical signal.
[0005] For example, the first light source may be an optical frequency comb generator or a laser array, etc., capable of emitting continuous light energy.
[0006] In this embodiment, multi-channel transmission is supported by splitting signals of multiple wavelengths, which can improve the service capacity of the optical module.
[0007] In other embodiments, the beam splitting unit may include X beam splitting sub-units. Each of the X beam splitting sub-units is connected to K modulation units. The K modulation units connected to the same beam splitting sub-unit belong to different modulation unit groups, and different beam splitting sub-units are connected to different modulation units. Any one of the X beam splitting sub-units is used to split one optical signal from the first light source into K optical signals, and send the K optical signals one by one to the K modulation units connected to it. Alternatively, each beam splitting sub-unit may be understood as including one input port and K output ports. The K output ports of each beam splitting sub-unit are connected to the K modulation units, and the K modulation units connected to the same beam splitting sub-unit belong to different modulation unit groups.
[0008] In one possible implementation, K>N, the K modulation unit groups include N working modulation unit groups and M protection modulation unit groups; N+M is less than or equal to K, and N is greater than or equal to M; when the N working modulation unit groups are in working state, the driving unit sends N*X service signals one-to-one to the N*X modulation units included in the N working modulation unit groups.
[0009] In one possible implementation, K>N, the K modulation unit groups include N working modulation unit groups and M guard modulation unit groups; N+M is less than or equal to K, and N is greater than or equal to M;
[0010] The driving unit is further configured to receive a first switching control signal and, according to the first switching control signal, send the service signal to be sent to the first modulation unit to the target modulation unit; the first modulation unit is one of the N working modulation unit groups, and the target modulation unit is one of the M protection modulation unit groups; or...
[0011] The driving unit is further configured to receive a second switching control signal and, according to the second switching control signal, send X service signals sent to the first modulation unit group to X modulation units in the target modulation unit group. The first modulation unit group is any one of the N working modulation unit groups, and the target modulation unit group is one of the M protection modulation unit groups.
[0012] The above solution employs N:M protection for the modulation unit, which improves the reliability of the optical module. In the event of a modulation unit transmission failure, the optical module's service capacity remains unchanged, and network availability is enhanced through modulation unit switching.
[0013] In one possible implementation, the first light source and the optical module are hot-swappable. With this hot-swappable connection, the first light source can be inserted into or removed from the optical module without interrupting the power supply to the device, and this does not affect the normal operation of other components of the device.
[0014] As the weakest component in the optical module, the light source can be replaced to improve its reliability in the event of a failure by using a hot-swappable connection.
[0015] In one possible implementation, the optical module further includes an optoelectronic composite connector, through which the first light source is connected to the optical module. Exemplarily, the optoelectronic composite connector has optical and electrical ports on the same side, with the optical port connection preceding the electrical port connection; wherein the optical port type includes, but is not limited to, a small square connector (Lucent Connector, LC), an MPO, etc., and the number is one or more.
[0016] In the above solution, the optical module is connected via an optoelectronic composite connector, eliminating the need for external fiber splicing, simplifying operation, and further improving the maintainability of the optical module.
[0017] In one possible implementation, the first light source is disposed inside the optical module.
[0018] In one possible implementation, it further includes K multiplexing units; the K multiplexing units are connected one-to-one with the K modulation unit groups; each multiplexing unit is used to multiplex the X-channel modulated optical signals output by the connected modulation unit group to obtain a single multiplexed optical signal.
[0019] In the above scheme, the output multiple signals are combined by a multiplexing unit before being output, which can reduce the scale of external fiber optic deployment and further improve reliability.
[0020] In one possible implementation, the optical module further includes a multi-core fiber optic connector; the multi-core fiber optic connector is connected to the K multiplexing units.
[0021] In one possible implementation, the K modulation unit groups are coupled to a multiplexing component; the multiplexing component is used to multiplex the N*X modulated optical signals output by the N*X modulation units to obtain N multiplexed optical signals; wherein, one multiplexed optical signal is formed by multiplexing X modulated optical signals with different wavelengths, and different multiplexed optical signals are formed by multiplexing different modulated optical signals.
[0022] The above scheme can combine wavelength sequences of different modulation units through the multiplexing component, realizing some simple optical service scheduling and cross-connect functions. The flexible and configurable rate reduces the dependence on the back-end switch, avoids secondary switching in the electrical domain, and achieves low latency characteristics.
[0023] In one possible implementation, the multiplexing component is disposed inside the optical module, or the multiplexing component is disposed outside the optical module.
[0024] In one possible implementation, the multiplexing component is disposed outside the optical module, and the optical module further includes an optical fiber connector;
[0025] The multiplexing component is connected to the K modulation unit groups via the optical fiber connector.
[0026] In one possible implementation, the K modulation unit groups correspond one-to-one with the K modulation top signals, and at least one of the X service signals in each of the K modulation unit groups carries the corresponding modulation top signal.
[0027] In the above scheme, by carrying the modulation signal on the service signal input in each modulation unit group, a modulation operation and maintenance channel can be established, which can realize system-level management and fault location.
[0028] In one possible implementation, the optical module further includes a coupling unit, which includes X first input ports, X second input ports, and X output ports; the X output ports of the coupling unit are connected one-to-one with the X input ports of the beam splitting unit; the X first input ports of the coupling unit are connected to the first light source, and the X second input ports of the coupling unit are connected to the second light source. The coupling unit is used to couple an optical signal input from one of the first input ports and an optical signal input from one of the second input ports to an output port for output, wherein the optical signals from the first input ports and the optical signals from the second input ports that are coupled have the same wavelength.
[0029] In one example, the second light source can emit light simultaneously with the first light source, jointly providing optical signals to the optical module 100, thereby increasing optical power. Of course, if the first light source fails, the second light source continues to provide optical signals to the optical module 100 to prevent signal interruption, thus extending the lifespan of the optical module.
[0030] In another example, the second light source can serve as a backup for the first light source. When the first light source is active, the second light source is inactive. When the first light source fails, the second light source becomes active and continues to provide light to the optical module.
[0031] In one possible implementation, the second light source can be hot-swapped with the optical module. Alternatively, the second light source can be located inside the optical module. For example, both the first and second light sources can be located inside the optical module, or both can be located outside the optical module. Another possibility is that one of the first and second light sources is inside the optical module, and the other is outside.
[0032] In one possible implementation, the optical module further includes K groups of receiving units, each group of receiving units including X receiving units;
[0033] Any one of the K receiving unit groups is used to receive X-channel optical signals and convert the X-channel optical signals into electrical signals, wherein the X-channel optical signals have different wavelengths.
[0034] Different receiving units can use a unified working mode or different working modes.
[0035] In one possible implementation, the optical module further includes K wavelength division units; the K wavelength division units are connected one-to-one with the K receiving unit groups; each wavelength division unit is used to receive one multiplexed optical signal and divide it into X optical signals, and output them one-to-one to the X receiving units in the corresponding receiving unit group.
[0036] In the above scheme, the input multi-channel signals are demultiplexed by a wavelength division unit before being input to the optical module, which can reduce the scale of external fiber optic deployment and further improve the reliability of the optical module.
[0037] In one possible implementation, the optical module also includes a multi-core fiber optic connector. The multi-core fiber optic connector connects to K wavelength division units.
[0038] In one possible implementation, the K receiving unit groups are coupled to a wavelength division component. The wavelength division component is used to perform wavelength division processing on the received N wavelength-division optical signals to obtain N*X optical signals; wherein, one wavelength-division optical signal is divided into X optical signals with different wavelengths, and the N*X optical signals are output one-to-one to the N*X receiving units in the K receiving unit groups.
[0039] In one possible implementation, the wavelength division component is disposed inside the optical module, or the wavelength division component is disposed outside the optical module.
[0040] In one possible implementation, the wavelength division component is located outside the optical module, and the K receiving unit groups are coupled to the wavelength division component through fiber optic interface connectors.
[0041] Secondly, embodiments of this application provide an optical network device, including the optical module described in either the first or second aspect.
[0042] Based on the implementations provided in the above aspects, this application can be further combined to provide more implementations. Attached Figure Description
[0043] Figure 1A This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0044] Figure 1B This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0045] Figure 1C This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0046] Figure 2 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0047] Figure 3 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0048] Figure 4 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0049] Figure 5 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0050] Figure 6 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0051] Figure 7 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0052] Figure 8 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0053] Figure 9 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0054] Figure 10 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0055] Figure 11 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0056] Figure 12 A schematic diagram of the coupling between the first light source and the second light source is provided for an embodiment of this application;
[0057] Figure 13A This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0058] Figure 13B This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0059] Figure 14A This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0060] Figure 14B This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0061] Figure 15 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0062] Figure 16 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0063] Figure 17 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0064] Figure 18 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0065] Figure 19 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0066] Figure 20 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0067] Figure 21 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0068] Figure 22 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0069] Figure 23 This application provides a schematic diagram of the structure of an optical module 100 according to an embodiment;
[0070] Figure 24 This application provides a schematic diagram of a computing cluster architecture. Detailed Implementation
[0071] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.
[0072] In the description of this application, unless otherwise stated, "multiple" refers to two or more. Additionally, " / " indicates that the related objects are in an "or" relationship; for example, A / B can represent A or B. "And / or" in this application merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone, where A and B can be singular or plural. Furthermore, to facilitate a clear description of the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and are not necessarily different. It should also be noted that, unless specifically stated, the specific description of some technical features in one embodiment can also be used to explain the corresponding technical features mentioned in other embodiments. For example, the design example of the modulation unit in one embodiment can be applied to the modulation units in all other embodiments. Furthermore, to more clearly illustrate the relationship between components in different embodiments, this application uses the same drawing numbers to denote components with the same or similar functions in different embodiments. Additionally, it should be noted that the various embodiments of this application can be combined to provide more implementations.
[0073] The technical solutions proposed in this application can be applied to different business scenarios, including but not limited to: AI clusters, backbone optical transmission networks, optical access networks, short-distance optical interconnects, and wireless service fronthaul / backhaul.
[0074] Optical modules are crucial components of optical communication equipment, used to transmit and / or extract customer service data from optical signals. When an optical module only has a transmitting function, it is typically called a transmitter optical subassembly (TOSA). When an optical module only receives and detects optical signals, it is typically called a receiver optical subassembly (ROSA). An optical module with both transmitting and receiving functions is called a bi-directional optical subassembly (BOSA). Currently, one end of an optical module is an electrical connector for connecting to electrical connectors on a single circuit board, while the opposite side is an optical interface for connecting optical fibers to enable connections to other optical communication devices in the network, or between different circuit boards of the same device.
[0075] Optical modules communicate by being plugged into the boards of optical network equipment. These boards have electrical connectors for connecting the electrical interfaces of the optical modules. Optical network equipment includes one or more types of boards to perform functions such as processing, transmitting, and exchanging customer business data. Optical modules can be used in computing clusters. They are used to perform electro-optical conversion on the electrical signals of computing nodes for transmission to the optical switching network for data exchange. With the growth of AI computing power, the demand for optical modules continues to increase, and the capacity of optical modules has become crucial for improving the communication capabilities of computing clusters.
[0076] Based on this, embodiments of this application provide an optical module for increasing the capacity of an optical module.
[0077] See Figure 1A and Figure 1B The diagram shown is a structural schematic of an optical module provided in an embodiment of this application. The optical module 100 includes K modulation unit groups, a driving unit 120, and a beam splitting unit 130. Each of the K modulation unit groups includes X modulation units 110. To facilitate differentiation, the X modulation units 110 are referred to as modulation units 110-1 to 110-X. The driving unit 120 is connected to the K*X modulation units 110 included in the K modulation unit groups; K and X are both integers greater than 1. The beam splitting unit 130 includes X input ports and K*X output ports. The K*X output ports are connected one-to-one with the K*X modulation units 110 in the K modulation unit groups.
[0078] In some embodiments, the K*X output ports can be divided into X output port groups, each output port group including K output ports, and the K output ports in each output port group are connected to K modulation units. The K modulation units connected to the same output port group belong to different modulation unit groups, that is, the K output ports in each output port group are connected to K modulation unit groups.
[0079] In one possible implementation, the first light source 210 can be built inside the optical module 100 or disposed outside the optical module 100. See also Figure 1A As shown, taking an example where the first light source 210 is disposed outside the optical module 100. See [link / reference] Figure 1B As shown, the first light source 210 is disposed inside the light module 100.
[0080] It should be noted that the “connection” or “linking” mentioned in the embodiments of this application includes direct or indirect connection. It can be a port connection or an optical path connection. Those skilled in the art will understand that specific optical devices may not necessarily have a substantial physical contact connection, but the spatial position of these optical devices and their own device characteristics make them constitute an optical path connection.
[0081] In some embodiments, the first light source 210 is disposed outside the optical module 100, and the first light source 210 can be hot-swapped with the optical module 100. Using a hot-swappable connection, the first light source can be inserted into or removed from the optical module without interrupting the power supply to the device, and this does not affect the normal operation of other components of the device. As the weakest component in the optical module, the light source's reliability is improved by employing a hot-swappable connection, allowing for replacement in case of light source failure.
[0082] In some embodiments, see Figure 1C As shown, an optoelectronic composite connector 310 can be provided in the optical module 100. The first light source 210 is connected to the optical module 100 through the optoelectronic composite connector 310. The optoelectronic composite connector 310 has both electrical and optical ports. The optical module 100 can supply power to the first light source 210 or transmit other electrical signals through the electrical port. The optical module 100 receives X-channel optical signals from the first light source 210 through the optical port. Exemplarily, the optoelectronic composite connector has the optical port and electrical port on the same side, and the optical port is connected before the electrical port; the optical port type includes, but is not limited to, a small square connector (Lucent Connector, LC), MPO, etc., and the number is one or more. The first power source 210 is connected to the optical module 100 through the optoelectronic composite connector 310, which does not require external fiber splicing, simplifies operation, and further improves the maintainability of the optical module.
[0083] For example, the first light source 210 may be an optical frequency comb generator or a laser array, etc., capable of emitting continuous light energy.
[0084] In other embodiments, the beam splitting unit 130 may include X beam splitting sub-units. Each of the X beam splitting sub-units is connected to K modulation units. The K modulation units connected to the same beam splitting sub-unit belong to different modulation unit groups, and different beam splitting sub-units are connected to different modulation units. Any one of the X beam splitting sub-units is used to split one optical signal from the first light source 210 into K optical signals, and send the K optical signals one by one to the K modulation units connected to it. Alternatively, each beam splitting sub-unit may include one input port and K output ports. The K output ports of each beam splitting sub-unit are connected to the K modulation units, and the K modulation units connected to the same beam splitting sub-unit belong to different modulation unit groups.
[0085] The beam splitter 130 is used to split the X-channel optical signals with different wavelengths output from the first light source 210 into K channels. Specifically, the beam splitter 130 receives the X-channel first optical signals from the first light source 210 through X input ports, each with a different wavelength. The beam splitter 130 splits each of the X-channel first optical signals into K second optical signals. The K second optical signals split from the same first optical signal are output to K modulation units 110, and the K modulation units 110 belong to different modulation unit groups. The second optical signals split from different first optical signals enter different modulation units 110. In other words, an optical signal of one wavelength is split into K optical signals by the beam splitter 130 and enters the K modulation unit groups.
[0086] As an example, see Figure 1A As shown, the first light source 210 emits X optical signals with wavelengths of λ1, λ2, ..., λX. The beam splitter 130 splits the optical signal with wavelength λ1 into K optical signals, which are then output to the modulation units 110-1 in the K modulation unit groups. Similarly, the beam splitter 130 splits the optical signal with wavelength λ2 into K optical signals, which are then output to the modulation units 110-2 in the K modulation unit groups. And so on, the beam splitter 130 splits the optical signal with wavelength λX into K optical signals, which are then output to the modulation units 110-X in the K modulation unit groups.
[0087] The driving unit 120 sends N*X service signals one-to-one to N*X modulation units 110 out of K*X modulation units 110, where N is a positive integer less than or equal to K. In some embodiments, the driving unit 120 may also be integrated with the K*X modulation units 110 into a single chip.
[0088] The modulation unit 110 can be an optical modulator used to load an electrical signal onto optical energy and output optical energy with a signal (also referred to as an optical signal). Specifically, the specific form in which the electrical signal is loaded onto the optical energy can change the phase, amplitude, etc. of the optical energy. For example, the modulation unit 110 can use a Mach-Zehnder interferometer (MZI) modulator, or other modulators, which are not specifically limited in this application embodiment.
[0089] Any one of the N*X modulation units 110 is used to modulate (or load) a received service signal (which can also be understood as an electrical signal carrying service data) onto (or onto) an optical signal to obtain a modulated optical signal. Thus, the N*X modulation units 110 output N*X modulated optical signals.
[0090] In this embodiment, the K*X modulation units can employ a unified modulation scheme or different modulation schemes. Each modulation unit group can correspond to a unified top-level modulation signal. There is a one-to-one correspondence between the K modulation unit groups and the K top-level modulation signals. At least one of the X service signals in each of the K modulation unit groups carries the corresponding top-level modulation signal. The top-level modulation signal is used to carry system monitoring information, module performance parameters, and other information. By carrying the top-level modulation signal in the service signals input to each modulation unit group, a top-level modulation operation and maintenance channel can be established, enabling system-level management and fault location. In some implementation scenarios, each modulation unit has two or more service signals carrying the top-level modulation signal to protect the information carried by the top-level modulation signal, preventing information loss due to the loss or failure of one of the signals carrying the top-level modulation signal, thereby further improving the reliability of the optical module.
[0091] In some embodiments, the X modulation units 110 included in the modulation unit group can be integrated within the optical module 100, or they can be individually disposed within the optical module 100.
[0092] In some possible embodiments, K = N, and all modulation units in the N modulation unit groups can function as working modulation units. See also Figure 2 As shown, N modulation unit groups are in operation, and the driving unit 120 sends N*X service signals one-to-one to the N*X modulation units included in the N modulation unit groups. Any one of the N*X modulation units 110 modulates one of the received service signals onto one optical signal to obtain one modulated optical signal. Thus, the N*X modulation units 110 output N*X modulated optical signals.
[0093] In other possible embodiments, see Figure 3 As shown, K>N, the K modulation unit groups include N working modulation unit groups and M protection modulation unit groups; N+M is less than or equal to K, and N is greater than or equal to M. When the N working modulation unit groups are in working state, the drive unit 120 sends N*X service signals one-to-one to the N*X modulation units 110 included in the N working modulation unit groups.
[0094] In one possible implementation, the drive unit 120 may receive a first switching control signal. This first switching control signal instructs the drive unit 120 to send the service signal to be sent to the first modulation unit to the target modulation unit of the M protection modulation unit groups. The drive unit 120 sends the service signal to be sent to the first modulation unit to the target modulation unit according to the first switching control signal. The first modulation unit is one of the N working modulation unit groups, and the target modulation unit is one of the M protection modulation unit groups.
[0095] The first switching control signal can be generated by either active or passive switching. Passive switching can occur when a fault occurs in the transmission link where the first modulation unit is located, such as a fault in the first modulation unit itself, a fault in the output link of the first modulation unit, or a fault in the receiving link of the first modulation unit. Active switching can be generated by the network management device planning the path or by other active switching methods.
[0096] In another possible implementation, the drive unit 120 may receive a second switching signal. This second switching control signal instructs the drive unit 120 to send the X service signals to be sent to the first modulation unit group to the X modulation units in the target modulation unit group. Thus, the drive unit 120 sends the X service signals intended for the first modulation unit group to the X modulation units in the target modulation unit group according to the second switching control signal. The first modulation unit group is any one of the N working modulation unit groups, and the target modulation unit group is one of the M protection modulation unit groups.
[0097] In some embodiments, to improve data transmission efficiency and quality, optical signals of multiple wavelengths can be multiplexed before output. The device used for multiplexing can be configured inside or outside the optical module and connected to the optical module.
[0098] In one possible implementation, see Figure 4 As shown, the optical module 100 may further include K multiplexing units 140. The K multiplexing units 140 are connected one-to-one with the K modulation unit groups. Each multiplexing unit performs multiplexing on the X-channel modulated optical signals output by the modulation unit group it is connected to, so as to obtain a single multiplexed optical signal. Figure 4 Each modulation unit group includes X modulation units, which are connected one-to-one with a multiplexing unit 140. For example, the multiplexing unit 140 can be an arrayed waveguide device, an optical fiber coupled device, or a space optical device; this application embodiment does not limit this.
[0099] In some embodiments, the multiplexing unit 140 and the corresponding modulation unit group comprising K modulation units can be integrated within the optical module 100. For example, see... Figure 5 As shown.
[0100] Taking K=N as an example, all N multiplexing units 140 function as working multiplexing units. The N*X modulated optical signals output from the N modulation unit groups are multiplexed into N multiplexed optical signals. The N multiplexing units 140 in the optical module 100 are connected one-to-one with the N modulation unit groups. Any multiplexing unit 140 multiplexes the X modulated optical signals output from the connected modulation unit group to obtain a single multiplexed optical signal.
[0101] Taking a value greater than N as an example, N multiplexing units 140 are used as working multiplexing units, and M multiplexing units 140 are used as protection multiplexing units. See also Figure 6 As shown, when the drive unit 120 switches the service signal from the output to a certain working modulation unit group to the output to the protection modulation unit group, the multiplexing unit 140 corresponding to the protection modulation unit group will receive the X-channel modulated optical signal and thus perform the multiplexing operation.
[0102] In another possible implementation, see Figure 7 As shown, a multiplexing component 310 is installed inside the optical module 100. K modulation unit groups are respectively connected to the multiplexing component 310. Figure 7 Each modulation unit group includes X modulation units connected to the multiplexing component 310.
[0103] The multiplexing component 310 combines the N*X modulated optical signals output from the N*X modulation units to obtain N combined optical signals. One combined optical signal is formed by combining X modulated optical signals with different wavelengths, and different combined optical signals are formed by combining different modulated optical signals. For example, the multiplexing component 310 can be an arrayed waveguide device, an optical fiber coupled device, or a space optical device; this embodiment does not limit the specific type of device used.
[0104] In one example, taking K=N as an example, the multiplexing component 310 combines the N*X modulated optical signals output by the N modulation unit groups into N combined optical signals.
[0105] In another example, taking K as greater than N, N modulation unit groups are used as working modulation unit groups, and M modulation unit groups are used as guard modulation unit groups.
[0106] For example, the drive unit 120 receives a first switching control signal. When the drive unit 120 sends the service signal to be sent to the first modulation unit in the protection modulation unit group to the target modulation unit in the protection modulation unit group according to the first switching control signal, the multiplexing component 310 will not receive a modulated optical signal from the first modulation unit, but will receive a modulated optical signal from the target modulation unit. For example, the multiplexing component 310 can perform multiplexing processing on this modulated optical signal and the modulated optical signal output by the modulation unit in the modulation unit group where the first modulation unit is located.
[0107] For example, the drive unit 120 can receive a second switching signal. Therefore, the drive unit 120, according to the second switching control signal, sends the X service signals sent to the first modulation unit group to the X modulation units in the target modulation unit group among the M protection modulation unit groups. Further, the multiplexing component 310 does not receive modulated optical signals from the first modulation unit group, but instead receives modulated optical signals from the target modulation unit group. Then, it performs multiplexing processing on the modulated optical signals output from the target modulation unit group.
[0108] In another example, the multiplexing component 310 can also be disposed outside the optical module 100, see [reference needed]. Figure 8 As shown, the K modulation unit groups are connected to the multiplexing component 310.
[0109] In some implementation scenarios, the optical module 100 can also be equipped with a fiber optic interface connector, such as a multi-fiber push-on (MPO) connector.
[0110] For example, see Figure 9 The diagram shown is a structural schematic of an optical module 100. Figure 4 On the basis Figure 9 The optical module 100 shown also includes an MPO 150. The MPO 150 outputs the N multiplexed optical signals from the N multiplexing units 140 to the outside of the optical module 100.
[0111] For example, see Figure 10 The diagram shown is a structural schematic of an optical module 100. Figure 7 On the basis Figure 10 The optical module 100 shown also includes an MPO 150. The MPO 150 outputs the N-channel multiplexed optical signals from the multiplexing component 310 to the outside of the optical module 100.
[0112] For example, see Figure 10 The diagram shown is a structural schematic of an optical module 100. Figure 8 On the basis Figure 11 The optical module 100 shown also includes an MPO 150. The MPO 150 is connected to the multiplexing assembly 310. The MPO 150 outputs N*X modulated optical signals from the N*X modulation units 110 in the K*X modulation units 110 to the multiplexing assembly 310. The multiplexing assembly then performs multiplexing processing on the N*X modulated optical signals and outputs N multiplexed optical signals.
[0113] In the above scheme, the wavelength sequence of different modulation units can be combined using the multiplexing component 310, realizing some simple optical service scheduling and cross-connect functions. The flexible and configurable rate reduces the dependence on the back-end switch, avoids secondary switching in the electrical domain, and achieves low latency characteristics.
[0114] Currently, optical modules typically operate by inserting into electrical connectors on a single board. If an optical module fails, it can be removed and replaced with a new one to restore the optical communication equipment to normal operation. This method is mainly suitable for optical modules with a low number of channels (or capacity), such as single-channel or dual-channel modules. With the development of silicon photonics technology, the number of channels in optical modules is gradually increasing. The traditional method of directly discarding failed optical modules has certain limitations. First, with the increase in the number of channels, the number of components (e.g., optical modulators) in the optical module must also increase accordingly, thus increasing the cost of the optical module and significantly increasing the cost of discarding it. Second, research has found that the failure rates of different components in an optical module vary considerably, making components with higher failure rates a bottleneck to the module's lifespan. The failure rate of the light source in an optical module is significantly higher than that of other components (e.g., modulators). Because of the increased number of channels, light source failure becomes the main cause of optical module failure. Third, packaging different components into a single module leads to increased operating temperatures of the components within the module, reducing the lifespan of the components (especially the light source).
[0115] In one embodiment, a hot-swappable method is used between the light source and the optical module, which allows for timely replacement of the light source in the event of a failure.
[0116] In other embodiments, a second light source 220 may also be provided in the optical module 100. Of course, the second light source 220 may also be located outside the optical module 100. The connection method between the second light source 220 and the optical module 100 may be the same as or different from the connection method between the first light source 210 and the optical module 100. For example, the second light source 220 may be hot-swapped with the optical module 100. Alternatively, the second light source 220 may be connected to the optical module 100 via a photoelectric composite connector.
[0117] In one example, the second light source 220 can emit light simultaneously with the first light source 210, jointly providing optical signals to the optical module 100, thereby increasing optical power. Of course, if the first light source 210 fails, the second light source 210 continues to provide optical signals to the optical module 100 to prevent optical signal interruption, thereby improving the lifespan of the optical module.
[0118] In another example, the second light source 220 can serve as a backup light source for the first light source. When the first light source 210 is in operation, the second light source 220 is in a non-operational state. When the first light source 210 fails, the second light source 220 is in operation, continuing to provide light to the optical module.
[0119] For example, the second light source 220 may be an optical frequency comb generator or a laser array, etc.
[0120] The following example assumes that both the first light source 210 and the second light source 220 are located outside the optical module 100. The first light source 210 and the second light source 220 are connected through a coupling unit, and then connected to the beam splitting unit 130 in the optical module 100 through the coupling unit. The coupling unit 230 can be located inside or outside the optical module 100. It should be noted that if both the first light source 210 and the second light source 220 are located inside the optical module 100, the coupling unit 230 is also located inside the optical module 100.
[0121] See Figure 12 As shown, the coupling unit 230 includes X first input ports, X second input ports, and X output ports. The X output ports of the coupling unit 230 are connected one-to-one with the X input ports of the beam splitting unit; the X first input ports of the coupling unit 230 are connected to the first light source 210, and the X second input ports of the coupling unit 230 are connected to the second light source 220. The coupling unit 230 is used to couple an optical signal input from one of the first input ports and an optical signal input from one of the second input ports to an output port. The optical signals from the first input ports and the optical signals from the second input ports undergoing the coupling operation have the same wavelength.
[0122] For example, the wavelengths of the X-ray signals emitted by the first light source 210 are λ1, λ2, ..., λX. The wavelengths of the X-ray signals emitted by the second light source 220 are λ1, λ2, ..., λX. Then, the coupling unit 230 couples the light signal with wavelength λ1 from the first light source 210 and the light signal with wavelength λ1 from the second light source 220 into one light signal. The coupling unit 230 couples the light signal with wavelength λ2 from the first light source 210 and the light signal with wavelength λ2 from the second light source 220 into one light signal, and so on. The coupling unit 230 couples the light signal with wavelength λX from the first light source 210 and the light signal with wavelength λX from the second light source 220 into one light signal.
[0123] See Figure 13A As shown, taking the coupling unit 230 disposed inside the optical module 100 as an example, and the first light source 210 and the second light source 220 disposed inside the optical module 100 as an example.
[0124] See Figure 13B As shown, taking the example where the first light source 210, the second light source 220, and the coupling unit 230 are all located inside the optical module 100.
[0125] The coupling unit 230 mentioned in the embodiments of this application can be any of the following: multimode coupler, Y-branch coupler, directional coupler, or MEMS (micro-electr-mechanical systems). Any device that can realize the function of the coupling unit of this application can be used in the optical module provided in this application, and this application is not limited thereto.
[0126] The above describes the function of the optical module as a transmitter. In some possible implementations, the optical module 100 can perform both signal transmission and signal reception. That is, the optical module may include both a transmitter and a receiver. In some implementation scenarios, the transmitter and receiver can be deployed separately in two modules. The following explanation uses an optical module that deploys both a transmitter and a receiver as an example. See [link to documentation]. Figure 14A As shown, the optical module 100 may further include K receiving unit groups. Each receiving unit group includes X receiving units 410. The X receiving units 410 are respectively receiving units 410-1 to receiving units 410-X. Exemplarily, any one of the K receiving unit groups is used to receive X optical signals and convert the X optical signals into electrical signals, wherein the X optical signals have different wavelengths.
[0127] In some embodiments, different receiving units may employ different operating modes (or receiving methods) or different receiving methods. In some implementation scenarios, receiving units within the same receiving unit group may use the same operating module, or they may employ different operating modes.
[0128] In some embodiments, see Figure 14B As shown, the optical module 100 may also include an amplifier 420. The amplifier 420 amplifies and outputs the N*X electrical signals output one-to-one from the N*X receiving units in the K receiving unit group, where N is an integer less than or equal to K. For example, the amplifier 420 may be a trans-impedance amplifier (TIA), or other types of amplifiers; this embodiment does not limit the specific type of amplifier used.
[0129] In some embodiments, the receiving unit 410 may also have an amplification function. For example, the receiving unit 410 may be a PIN-TIA optical receiver, which is a detection device that converts weak optical signals into electrical signals and amplifies the signals with low noise at a certain intensity.
[0130] It is understandable that K receiver unit groups can correspond to K modulation unit groups. When K=N, all N receiver unit groups are in working condition. When K>N, N receiver unit groups are the working receiver unit groups, and M receiver unit groups are the protection receiver unit groups. The K receiver unit groups can achieve protection switching through the configuration of an external optical switching network. The optical module 100 is applied to optical network equipment and can receive optical signals through switching. Switching can be active switching or passive switching, such as fault-triggered switching.
[0131] In some embodiments, to improve data transmission efficiency and quality, optical signals of multiple wavelengths can be multiplexed before transmission. At the receiving side, a device for wavelength division multiplexing can be used to receive the data. The device for wavelength division can be configured inside or outside the optical module and connected to it.
[0132] In one possible implementation, see Figure 15 As shown, the optical module 100 may further include K wavelength division units 430. Each of the K wavelength division units 430 is connected to one of the K receiving unit groups. Each wavelength division unit 430 is used to receive one multiplexed optical signal and then divide it into X optical signals, which are output to the X receiving units 410 in the corresponding receiving unit group. For example, the wavelength division unit 430 may be an arrayed waveguide device, an optical fiber coupled device, or a space optical device; this embodiment does not limit the specific type of device used.
[0133] In some embodiments, the wavelength division unit 430 and the corresponding modulation unit group comprising K modulation units can be integrated within the optical module 100. For example, see... Figure 16 As shown.
[0134] Taking K=N as an example, all N wavelength division units 430 function as multiplexing units. The N wavelength division units 430 in the optical module 100 are connected one-to-one with the N receiving unit groups. Any multiplexing unit 140 receives one multiplexed optical signal and splits it into X optical signals, which are then output to the X receiving units 410 in the corresponding receiving unit group.
[0135] Taking K greater than N as an example, then N subwavelength sub-units 430 are used as working subwavelength sub-units, and N subwavelength sub-units 430 are used as protection subwavelength sub-units.
[0136] In another possible implementation, see Figure 17 As shown, a wavelength division multiplexing (WDM) component 440 is installed inside the optical module 100. K receiving unit groups are respectively connected to the WDM component 440. Figure 17Each receiving unit group includes X receiving units, each connected to a wavelength division component 440. The wavelength division component 440 is used to perform wavelength division processing on the received N wavelength division optical signals to obtain N*X optical signals; wherein, one wavelength division optical signal is divided into X optical signals with different wavelengths, and the N*X optical signals are output one-to-one to the N*X receiving units in the K receiving unit groups.
[0137] In another possible implementation, the wavelength division multiplexing component 440 can also be disposed outside the optical module 100, see [link to relevant documentation]. Figure 18 As shown, the K receiving unit groups are each connected to the demultiplexing component 440.
[0138] In some implementation scenarios, the optical module 100 can also be equipped with fiber optic interface connectors, such as multi-fiber push-on (MPO) connectors. Signal transmission and reception of the optical module can be achieved through the same fiber optic interface connector or through different fiber optic interface connectors.
[0139] For example, see Figure 19 The image shown is a structural schematic diagram of an optical module 100. Figure 15 On the basis Figure 19 The optical module 100 shown also includes an MPO 150. The MPO 150 is connected to K wavelength division units 430 and K wavelength multiplexing units 140. The MPO 150 sends the received N multiplexed optical signals to the N wavelength division units 430.
[0140] For example, see Figure 20 The image shown is a structural schematic diagram of an optical module 100. Figure 17 On the basis Figure 20 The optical module 100 shown also includes an MPO 150. The MPO 150 is connected to the wavelength division multiplexing component 440 and the wavelength multiplexing component 310. The MPO 150 sends the received N-channel multiplexed optical signals to the wavelength division multiplexing component 440.
[0141] For example, see Figure 21 The image shown is a structural schematic diagram of an optical module 100. Figure 18 On the basis Figure 21 The optical module 100 shown also includes an MPO 150. The MPO 150 receives the K*N modulated optical signals output from the wavelength division multiplexing (WDM) component 440 and sends them to K*N receiving units 410. In some embodiments, the WDM component 440 and the multiplexing component 310 can be integrated onto a single chip or board. In other embodiments, the functions of the WDM component 440 and the WDM component 310 can be implemented by a single device.
[0142] The optical module 100 provided in this application embodiment can be applied to optical network equipment, for example, by being plugged into a single board of the optical network equipment for communication. The single board has electrical connectors for connecting the electrical interface of the optical module. The optical network equipment includes one or more types of single boards to perform functions such as processing, transmitting, and exchanging customer service data.
[0143] The solution provided in this application embodiment is described below with reference to specific examples. Taking X=4 and N=K=8 as an example, both the first light source 210 and the second light source 220 emit optical signals of four wavelengths, λ1, λ2, λ3, and λ4, respectively. Taking N multiplexing units 140 deployed within the optical module 100 as an example, for the transmitting side, see... Figure 22 As shown, the optical signals with wavelengths λ1, λ2, λ3, and λ4, after being combined by the coupling unit 230, enter the beam splitting unit 130. The beam splitting unit 130 splits the optical signal of each wavelength into eight optical signals. For example, the eight optical signals after splitting wavelength λ1 enter the eight modulation units 110-1 in the eight modulation unit groups; the eight optical signals after splitting wavelength λ2 enter the eight modulation units 110-2 in the eight modulation unit groups; the eight optical signals after splitting wavelength λ3 enter the eight modulation units 110-3 in the eight modulation unit groups; and the eight optical signals after splitting wavelength λ4 enter the eight modulation units 110-4 in the eight modulation unit groups. The driving unit 120 sends 32 electrical signals (or service signals) carrying service data to the 32 modulation units 110. The modulation units 110 then modulate the service signals onto the received optical signals to obtain modulated optical signals. Then, the multiplexing unit 140 multiplexes the modulated optical signals with wavelengths λ1, λ2, λ3, and λ4, outputting one multiplexed optical signal. The eight multiplexing units output eight multiplexed optical signals, which are then output outside the optical module via the MPO150. On the receiving side, the MPO150 receives eight optical signals, and the eight wavelength division units 430 each divide the received optical signal into four optical signals with different wavelengths, distributing them to the corresponding receiving unit 410. The receiving unit 410 then performs photoelectric conversion on the received signals.
[0144] See Figure 23 As shown, taking M=1, N=8, X=4 as an example. For the transmitting side, see [link to relevant documentation]. Figure 23As shown, the optical signals with wavelengths λ1, λ2, λ3, and λ4, after being combined by the coupling unit 230, enter the beam splitting unit 130. The beam splitting unit 130 splits the optical signal of each wavelength into nine optical signals. For example, the nine optical signals after splitting wavelength λ1 enter modulation units 110-1 in a group of nine modulation units; the nine optical signals after splitting wavelength λ2 enter modulation units 110-2; the nine optical signals after splitting wavelength λ3 enter modulation units 110-3; and the nine optical signals after splitting wavelength λ4 enter modulation units 110-4. The driving unit 120 sends 32 electrical signals (or service signals) carrying service data to the 32 modulation units 110. The modulation units 110 then modulate the service signals onto the received optical signals to obtain modulated optical signals. Then, the multiplexing unit 140 multiplexes the modulated optical signals with wavelengths λ1, λ2, λ3, and λ4, and outputs one multiplexed optical signal. The eight multiplexing units output eight multiplexed optical signals, which are then output to the outside of the optical module via the MPO150. When a modulation unit (such as modulation unit 110-1 in the first modulation unit group) fails and needs to be switched over, or when the network management triggers an active switchover, the drive unit 120 sends the four service signals from the first modulation unit group to the four modulation units in the last protected modulation unit group. This allows the multiplexing unit 140 corresponding to the protected modulation unit group to multiplex the four modulated optical signals.
[0145] For example, in the above scheme, the electrical port of the optical module can adopt the Serial Computer Extended Bus standard (PPCIe) 6 protocol. For instance, if the single-channel rate is 64G, then the overall capacity of the optical module can reach 32*64 = 2.304Tb through the above scheme. Of course, the capacity of the optical module can be further increased by increasing the number of wavelengths or the number of modulation unit groups / receiver unit groups. The scheme provided in this application embodiment also supports the evolution of the PCIe protocol.
[0146] The above example only uses the optical module supporting the PCIE protocol. The optical module can also support the Ethernet (ETH) protocol or other proprietary protocols. This application does not limit this.
[0147] The above scheme takes setting up K multiplexing units in the optical module as an example. Of course, multiplexing components can also be used, as described above, and will not be listed here.
[0148] Optical modules can be used in computing cluster scenarios. They are used to convert electrical signals from computing nodes into optical signals for transmission to an optical switching network for data exchange. With the growth of AI computing power, the demand for optical modules continues to increase, making their capacity crucial for improving the communication capabilities of computing clusters. See also Figure 24 The diagram illustrates a possible computing cluster structure. The computing cluster includes multiple computing nodes and multiple optical switching devices. Each computing node may include multiple computing units and at least one optical module 100 provided in this embodiment. The optical module 100 is used to perform electro-optical conversion processing on the data from the computing units. Exemplarily, the computing unit may be a graphics processing unit (GPU), a neural network processing unit (NPU), or a central processing unit (CPU). The computing unit may be a computing chip used in high-performance computing (HPC), artificial intelligence (AI), or other application scenarios for processing services within the cluster. The optical switching device may be an optical cross-connect (OXC) using port-level optical switching technology, or an OXC using wavelength-level optical switching technology. For example, a wavelength-level OXC may be a WSS, such as liquid crystal on silicon (LCoS), liquid crystal (LC), or micro-electro-mechanical system (MEMS). Port-level OXC (or port-level OCS), such as those using MEMS, LC, piezoelectric ceramics, or waveguides.
[0149] This application embodiment can also be applied to communication clusters, such as communication clusters including one or more communication nodes and one or more switching devices. Multiple communication nodes can adopt the structure of the communication nodes provided above, which will not be elaborated further. Each communication node includes multiple communication chips and at least one optical module 100. The communication chips can be OTN chips or Ethernet service processing chips, etc. The optical module 100 is used to perform electro-optical conversion processing on the data from the communication chips.
[0150] The technical architecture provided in this application, which integrates multiple computing nodes (servers, GPUs / CPUs, etc.) into a unified resource pool using a high-capacity, high-reliability optical module, enables large-scale collaborative computing and efficient resource utilization. It also features high reliability, avoiding the cost waste of replacing the entire optical module due to a single-path failure, reducing service latency caused by optical module failures in optical networks, and improving the availability of computing networks.
[0151] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. An optical module, characterized in that, It includes a driving unit, a beam splitting unit, and K modulation unit groups; each modulation unit group includes X modulation units; the driving unit is connected to the K*X modulation units in the K modulation unit groups; K and X are both integers greater than 1; the beam splitting unit includes X input ports and K*X output ports; the K*X output ports are connected one-to-one with the K*X modulation units in the K modulation unit groups; The beam splitting unit receives X first optical signals from the first light source through the X input ports, each corresponding to a different wavelength. Each of the X-channel first optical signals is split into K channels of second optical signals. The K channels of second optical signals split from the same first optical signal are output to K modulation units in a one-to-one correspondence, and the K modulation units belong to different modulation unit groups; the second optical signals split from different channels of first optical signals enter different modulation units. The driving unit is used to send N*X service signals one-to-one to N*X modulation units among the K*X modulation units, where N is a positive integer less than or equal to K; Any one of the N*X modulation units is used to modulate one received service signal onto one optical signal to obtain a modulated optical signal.
2. The optical module as described in claim 1, characterized in that, K>N, the K modulation unit groups include N working modulation unit groups and M protection modulation unit groups; N+M is less than or equal to K, and N is greater than or equal to M; The driving unit is further configured to receive a first switching control signal and, according to the first switching control signal, send the service signal to be sent to the first modulation unit to the target modulation unit; the first modulation unit is one of the N working modulation unit groups, and the target modulation unit is one of the M protection modulation unit groups; or... The driving unit is further configured to receive a second switching control signal and, according to the second switching control signal, send X service signals sent to the first modulation unit group to X modulation units in the target modulation unit group. The first modulation unit group is any one of the N working modulation unit groups, and the target modulation unit group is one of the M protection modulation unit groups.
3. The optical module as described in claim 1 or 2, characterized in that, The first light source and the optical module are hot-swappable.
4. The optical module as described in any one of claims 1-3, characterized in that, The optical module also includes an optoelectronic composite connector, through which the first light source is connected to the optical module.
5. The optical module as described in claim 1 or 2, characterized in that, The first light source is located inside the optical module.
6. The optical module according to any one of claims 1-5, characterized in that, It also includes K multiplexing units; the K multiplexing units are connected one-to-one with the K modulation unit groups; each multiplexing unit is used to multiplex the X-channel modulated optical signals output by the connected modulation unit group to obtain a single multiplexed optical signal.
7. The optical module as described in claim 6, characterized in that, It also includes a multi-core fiber optic connector; the multi-core fiber optic connector is connected to the K multiplexing units.
8. The optical module according to any one of claims 1-5, characterized in that, The K modulation unit groups are coupled to the multiplexing component; The multiplexing component is used to multiplex the N*X modulated optical signals output by the N*X modulation units to obtain N multiplexed optical signals; wherein, one multiplexed optical signal is formed by multiplexing X modulated optical signals with different wavelengths, and different multiplexed optical signals are formed by multiplexing different modulated optical signals.
9. The optical module as described in claim 8, characterized in that, The multiplexing component can be located inside the optical module or outside the optical module.
10. The optical module as described in claim 9, characterized in that, The multiplexing component is disposed outside the optical module, and the optical module also includes an optical fiber connector; The multiplexing component is connected to the K modulation unit groups via the optical fiber connector.
11. The optical module according to any one of claims 1-10, characterized in that, The K modulation unit groups correspond one-to-one with the K modulation top signals, and at least one of the X-channel service signals in each of the K modulation unit groups carries the corresponding modulation top signal.
12. The optical module as described in claim 11, characterized in that, It also includes a coupling unit, which includes X first input ports, X second input ports, and X output ports; the X output ports of the coupling unit are connected one-to-one with the X input ports of the beam splitting unit; the X first input ports of the coupling unit are connected to the first light source, and the X second input ports of the coupling unit are connected to the second light source. The coupling unit is used to couple an optical signal input from a first input port and an optical signal input from a second input port to an output port for output. The optical signals from the first input port and the optical signals from the second input port that are used for coupling have the same wavelength.
13. The optical module as described in claim 12, characterized in that, The second light source is located inside the optical module.
14. The optical module according to any one of claims 1-13, characterized in that, It also includes K groups of receiving units, each of which includes X receiving units; Any one of the K receiving unit groups is used to receive X-channel optical signals and convert the X-channel optical signals into electrical signals, wherein the X-channel optical signals have different wavelengths.
15. The optical module as described in claim 14, characterized in that, It also includes K wavelength division units; the K wavelength division units are connected one-to-one with the K receiving unit groups; each wavelength division unit is used to receive one multiplexed optical signal and divide it into X optical signals, and output them one-to-one to the X receiving units in the corresponding receiving unit group.
16. The optical module as described in claim 14, characterized in that, The K receiving unit groups are coupled to the wavelength division component; The wavelength division component is used to perform wavelength division processing on the received N wavelength division optical signals to obtain N*X optical signals; wherein, one wavelength division optical signal is divided into X optical signals with different wavelengths, and the N*X optical signals are output one-to-one to the N*X receiving units in the K receiving unit group.
17. The optical module as described in claim 16, characterized in that, The wavelength division component can be located inside the optical module or outside the optical module.
18. An optical network device, characterized in that, Includes the optical module as described in any one of claims 1-17.