A centralized light supply device

Abstract

This application provides a centralized light supply device, including: a controller, at least one light source pool, and multiple CPO switches. The controller is connected to the light source pool and the CPO switches via a bidirectional communication channel, and the light source pool and the CPO switches are connected via a hybrid optoelectronic connector. The controller is used to control the light source pool and the CPO switches. The light source pool is used to output light to the CPO switches under the control of the controller. The CPO switches are used to modulate the received light source into an optical signal under the control of the controller and output the optical signal. The light source pool can be cascaded and expanded through a single controller, which can solve the problem in related technologies where pluggable light sources on ELS panels occupy the front panel of the device and take up a lot of space. Through the hybrid optoelectronic connector, more light sources can be connected, occupying less space on the panel and greatly saving the space occupied by the panel.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a centralized light supply device. Background Technology

[0002] Currently, there are two main methods for realizing co-packaged optics (CPO) light sources: built-in light sources and external laser sources (ELS) that are pluggable panel light sources.

[0003] The main advantages of an internal light source are its shorter optical path, lower coupling loss, and higher laser efficiency. However, its disadvantages are also very clear. First, the technology is very challenging, and currently, there are only a few CPO light sources that can achieve commercial silicon-based integration. Second, because the internal light source is close to the switch chip, the ambient temperature is relatively high, which leads to increased laser power consumption, decreased luminous efficiency, and increased failure rate.

[0004] ELS panel pluggable light sources solve the technical difficulties of built-in light sources and the problem of high ambient temperature. However, they also have a fatal drawback: they occupy the front panel of the device. At the same time, since each pluggable light source is independent of the others, there are serious problems in ensuring that the light source is in case of failure.

[0005] No solution has yet been proposed to address the issue of pluggable light sources in ELS panels occupying the front panel of devices in related technologies. Summary of the Invention

[0006] This application provides a centralized light supply device to at least solve the problem in the related art where pluggable light sources of ELS panels occupy the front panel of the device. At the same time, since each pluggable light source is independent of each other, there are also serious problems in ensuring the safety of light source failure.

[0007] This application provides a centralized light supply device, which includes: a controller, at least one light source pool, and multiple CPO switches. The controller is connected to the light source pool and the CPO switches via a bidirectional communication channel, and the light source pool and the CPO switches are connected via a hybrid optoelectronic connector. The controller is used to control the light source pool and the CPO switches. The light source pool is used to output light sources to the CPO switches under the control of the controller. The CPO switches are used to modulate the received light sources into optical signals under the control of the controller and output the optical signals.

[0008] In one exemplary embodiment, the light source pool includes: a plurality of light sources and an optical cross-connect matrix, the optical cross-connect matrix being connected to the plurality of light sources and the CPO switch via optical fibers, and the plurality of light sources being connected to the controller.

[0009] In one exemplary embodiment, the controller includes a control body and an external interface, the external interface including a first interface connected to the CPO switch and a second interface connected to the light source and the optical cross-matrix.

[0010] In an exemplary embodiment, the plurality of light sources includes a plurality of normal light sources, hot standby light sources, and cold standby light sources; the optical cross-matrix includes a plurality of controllable optical switches; the CPO switch includes a plurality of CPO modules; one controllable optical switch is connected to one normal light source; the plurality of controllable optical switches are all connected to the hot standby light source and the cold standby light source; one controllable optical switch is connected to one CPO module; the controllable optical switches are used to arbitrarily switch between input light sources and output light sources and to protect the light sources.

[0011] In one exemplary embodiment, the controller is further configured to, after power-on, shut down the optical cross-connect matrix; after completing a handshake and confirmation with the target CPO module in the CPO switch, control the start of the light source corresponding to the target CPO module; the target CPO module is configured to, after handshake and confirmation with the controller, send light source connection status information to the controller.

[0012] In an exemplary embodiment, the target CPO module is further configured to write the light source connection status information into a status register; the controller is configured to obtain the light source connection status information of the target CPO module by polling the status register, and after determining that the target CPO module indicates that the light source should be turned on, control the opening of the controllable light switch corresponding to the target CPO module to start the light source.

[0013] In an exemplary embodiment, the CPO module is further configured to store information about a faulty light source in a status register if it detects that the received light source is unstable or no light source is received; the controller obtains and notifies the light source pool of the information about the faulty light source by polling the status register; the light source pool is configured to switch the hot standby light source to the faulty light source after confirming the information about the faulty light source, and at the same time change the cold standby light source to the hot standby light source, and send an early warning signal to the controller; the controller is further configured to maintain the light sources in the light source pool according to the early warning signal.

[0014] In an exemplary embodiment, the CPO module is configured to acquire fault information of the target light source, adjust the flow rate according to the fault information of the target light source, and write the fault information of the target light source into a status register. The fault information of the target light source is determined in advance by the controller based on the historical usage data of the light source and the status data of the optical cross matrix and written into the register. The controller is further configured to acquire the fault information of the target light source by polling the status register and notify the controllable light switch corresponding to the CPO module to switch the light source.

[0015] In one exemplary embodiment, the CPO module is configured to detect a disconnection from the optoelectronic hybrid connector and write the corresponding light source absence information into a status register; the controller is further configured to obtain the light source absence information corresponding to the CPO module by polling the status register and control the light source corresponding to the CPO module to be turned off.

[0016] In one exemplary embodiment, the plurality of light sources and the light cross matrix in the light source pool are integrated into a single module, and the light source pool has a built-in internal controller.

[0017] In one exemplary embodiment, the optoelectronic hybrid connector includes an optical signal coupling point, an electrical signal connection point, and a positioning pin; or, the optoelectronic hybrid connector includes an optical signal coupling point, an electrical signal connection point, and a positioning hole, wherein the optical signal coupling point is used to transmit a light source to the CPO switch; the electrical signal connection point and the positioning pin are used to connect to the controller; or, the electrical signal connection point and the positioning hole are used to connect to the controller.

[0018] The centralized light supply device of this application embodiment includes: a controller, at least one light source pool, and multiple CPO switches. The controller is connected to the light source pool and the CPO switches, and the light source pool and the CPO switches are connected via a hybrid optoelectronic connector. Under the control of the controller, the light source pool outputs light to the CPO switch. Under the control of the controller, the CPO switch modulates the received light source into an optical signal and outputs the optical signal. The light source pool can be cascaded and expanded through a controller, which can solve the problem in related technologies that pluggable light sources on ELS panels occupy the front panel of the device and take up a lot of space. Through the hybrid optoelectronic connector, more light sources can be connected, occupying less space on the panel and greatly saving the space occupied by the panel. Attached Figure Description

[0019] Figure 1 This is a block diagram of a centralized light supply device according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of a centralized light supply device according to an embodiment of this application. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of a centralized light supply device according to an embodiment of this application. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of a light source optoelectronic hybrid connector according to an embodiment of this application. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of a light source optoelectronic hybrid connector according to an embodiment of this application. Figure 2 . Detailed Implementation

[0024] The embodiments of this application will be described in detail below with reference to the accompanying drawings and examples.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0026] This application provides a centralized light supply device. Figure 1 This is a block diagram of a centralized light supply device according to an embodiment of this application, such as... Figure 1 As shown, the centralized light supply device includes: a controller, at least one light source pool, and multiple CPO switches. The controller is connected to the light source pool and CPO switches via a bidirectional communication channel, and the light source pool and CPO switches are connected via a hybrid optoelectronic connector. The controller controls the light source pool and CPO switches. The controller supports the operation of the light source pool by connecting to the light source pool and CPO switches via the bidirectional communication channel. Under the control of the controller, the light source pool outputs light to the CPO switch. Under the control of the controller, the CPO switch modulates the received light source into an optical signal and outputs the optical signal. That is, after receiving the light source, the CPO switch modulates it into an optical signal to realize the data connection of the switch to the outside world. The hybrid optoelectronic connector in this embodiment can use a high-density connector, such as a 256-fiber or 3456-fiber connector.

[0027] Specifically, the light source pool can perform three functions: outputting light sources to the switch; notifying the CPO module in the CPO switch of the warning light source information and then switching the light source; and receiving fault information from the CPO module and switching the faulty light source.

[0028] To achieve the above functions, a hybrid optoelectronic connector is needed to connect the light source pool and the CPO switch, an optical connector is needed to connect the light source pool to the outside world, and an electrical connector is needed to connect the control system and the CPO switch to the light source pool.

[0029] This application can be applied to data center (DC) switches and distributed disaggregated chassis (DDC) routers, typically in DC server rooms or service provider server rooms. In such environments, integrated optical supply is more convenient, similar to centralized water cooling; in this case, centralized optical supply can be considered an infrastructure. The specific implementation of CPO switches and DDC routers simply involves connecting the optoelectronic hybrid connector of the light source to the CPO optoelectronic hybrid connector of the user device. The switches in this embodiment can specifically be DC switches, DDC routers, or general-purpose switches.

[0030] Figure 2 This is a schematic diagram of a centralized light supply device according to an embodiment of this application. Figure 1 ,like Figure 2 As shown, each light source pool includes: multiple light sources and an optical cross-connect matrix. The optical cross-connect matrix is ​​connected to the multiple light sources and a CPO switch via optical fibers. The multiple light sources are connected via integrated circuits (Inter-Integrated Circuits, abbreviated as I). 2 C) The bus is connected to the controller.

[0031] Figure 2 The light source pool contains light sources, each of which can consist of a group of multiple light sources or a single light source. For ease of explanation, this embodiment uses 18 light sources as an example. Each of the 18 light sources contains 4 individual light sources, and in this embodiment, each light source consists of 4 single light sources. The light sources are configured in a 16+2 configuration, with 16 being normally operating light sources, 1 being a hot standby light source, and 1 being a cold standby light source. All light sources can be connected to the optical switch matrix via plug-and-play connections.

[0032] In this embodiment, a 16+2 light source backup can be used to provide centralized light supply to a CPO switch with 16 CPOs. Specifically, the light source pool includes light sources and an optical switch matrix. In this embodiment, the light sources can adopt the following specifications: single-wavelength and four-wavelength light sources with a wavelength of 1310nm and a center wavelength of 1271-1291-1311-1331nm, connected via optical fiber and an optical switch matrix. All light sources can be connected via I... 2 The C bus is connected to the controller.

[0033] The optical switch matrix includes 18*16*4 controllable optical switches, enabling arbitrary switching between 18 input and 16 output light sources and providing protection for the light sources. The optical switch matrix supplies the light sources to the CPO switch via light source optical connectors.

[0034] The controller includes a control unit and external interfaces. The external interfaces include those connecting to the CPO switch and those connecting to the light source and optical switch matrix. The control relationship between the actual light source pool and the CPO switch is also described.

[0035] The CPO switch is connected to the optical switch matrix of the light source pool through the CPO optoelectronic hybrid connector. After the light source enters the CPO, it is modulated to realize the optical transmission of data.

[0036] Figure 3 This is a schematic diagram of a centralized light supply device according to an embodiment of this application. Figure 2 ,like Figure 3 As shown, the multiple light sources and light cross-matrix in this light source pool are integrated into a single module. The light source pool has a built-in internal controller, which simplifies the overall control of the light source pool. For example... Figure 3 The centralized light supply device shown includes a controller, a light source, an optical switch matrix, and a CPO switch. Figure 2 The difference between the illustrated implementation schemes lies in the following: the light source pool adopts a scheme that integrates the light source and optical switch matrix into one; the light source pool supports configuration across CPO switches, and also supports cascading of multiple light sources, meaning one light source pool can support multiple DC switches, and multiple light source pools can be cascaded and expanded through a single controller. The integrated light source and switch matrix scheme allows for a built-in controller within the light source pool, simplifying overall control. When cascading multiple light source pools to achieve m+n backup inclusion, protection within the local optical switch matrix needs to be considered.

[0037] In one exemplary embodiment, the controller includes a control body and an external interface, the external interface including a first interface connected to the CPO switch and a second interface connected to the light source and the optical cross-matrix.

[0038] In an exemplary embodiment, the plurality of light sources includes a plurality of normal light sources, hot standby light sources, and cold standby light sources. The optical cross-matrix includes a plurality of controllable optical switches, and the CPO switch includes a plurality of CPO modules. One controllable optical switch is connected to one normal light source. All of the plurality of controllable optical switches are connected to the hot standby light source and the cold standby light source. One controllable optical switch is connected to one CPO module. The controllable optical switch is used to arbitrarily switch between the input light source and the output light source and to protect the light source.

[0039] In one exemplary embodiment, the controller is further configured to, after power-on, shut down the optical cross-connect matrix; after completing a handshake and confirmation with the target CPO module in the CPO switch, control the activation of the light source corresponding to the target CPO module; the target CPO module is configured to, after handshaking and confirming with the controller, send light source connection status information to the controller. After power-on, the controller shuts down the optical switch matrix and turns on any one light source; after a CPO module and the controller complete a handshake and confirmation, the controller activates that light source, and then connects the activated light source to the CPO module through the optical switch matrix, completing the activation process of the light source for that CPO module. After the light source connection is completed, the CPO module notifies the controller of its own light source connection status information. This communication process is handled by I in this embodiment. 2 This can be accomplished using the C protocol, but in a broader sense, it can also be accomplished using other protocols. (Through I...) 2 The process performed by the CPO module is as follows: The CPO module writes its own status information into a register. The controller, through polling, sees the status information of the CPO module and then writes it into the register indicating whether the light source can be turned on. After receiving the information, the CPO module replies that the light source can be turned on. The controller, through polling, if it finds the confirmation information from the CPO module, starts one of the power supplies and then opens the optical path in the optical matrix switch. The connection process of other optical paths in the system repeats the above process until all optical paths are open, and then the monitoring phase begins.

[0040] In an exemplary embodiment, the target CPO module further includes a status register. The target CPO module is also used to write the light source connection status information into the status register. The controller is used to obtain the light source connection status information of the target CPO module by polling the status register. After determining that the target CPO module indicates that the light source should be turned on, the controller controls the controllable light switch corresponding to the target CPO module to start the light source. That is, if the CPO detects that the input modulated light source is unstable or has no light input, it stores this information in its status register. The controller learns about this information through a polling method and then notifies the light source pool. After confirming this information, the light source pool immediately switches the hot standby light source to the faulty light source, and simultaneously changes the cold standby light source to a hot standby light source, sending a warning signal to the controller to prompt maintenance of the light source pool. Furthermore, the CPO module is also used to store the information of the faulty light source in the status register if it is found that the received light source is unstable or no light source is received; the controller obtains the information of the faulty light source by polling the status register and notifies the light source pool of the information of the faulty light source; the light source pool is used to switch the hot standby light source to the faulty light source after confirming the information of the faulty light source, and at the same time change the cold standby light source to the hot standby light source, and send an early warning signal to the controller; the controller is also used to maintain the light source of the light source pool according to the early warning signal.

[0041] In one exemplary embodiment, the CPO module is configured to acquire fault information of a target light source, adjust the flow rate according to the fault information, and write the fault information of the target light source into a status register. The fault information of the target light source is determined in advance by the controller based on historical usage data of the light source and the status data of the optical cross-matrix, and then written into the register. The controller is further configured to acquire the fault information of the target light source by polling the status register and notify the controllable optical switch corresponding to the CPO module to switch the light source. The controller pre-determines light sources that may malfunction based on historical usage data and the status data of the optical switch matrix. Once confirmed, the controller writes this information into the I / O register of the CPO module. 2 After the C register is activated, the CPO module adjusts its own flow rate. Once ready, it writes this information into the register. When the controller receives this information, it notifies the light source pool to switch the light source.

[0042] In one exemplary embodiment, the CPO module is configured to detect a disconnection from the optoelectronic hybrid connector and write the corresponding light source absence information into a status register. The controller is further configured to obtain the light source absence information corresponding to the CPO module by polling the status register and control the shutdown of the light source corresponding to the CPO module. This achieves eye safety for the light source; that is, after the light source optoelectronic hybrid connector and the CPO optoelectronic hybrid connector are connected, the controller and CPO perform a handshake to confirm the connection, and the light source in the light source pool is turned on. When a light source is found not to be connected to the CPO module, i.e., the CPO module is not connected to the optoelectronic hybrid connector, the CPO module detects the corresponding light source absence, the controller shuts down the optical switch matrix corresponding to that light source, and simultaneously shuts down the light source corresponding to that CPO module. The power supply will not be turned on until confirmation information from the CPO module connected to the light source is found.

[0043] Figure 4 This is a schematic diagram of a light source optoelectronic hybrid connector according to an embodiment of this application. Figure 1 ,like Figure 4 As shown, the optoelectronic hybrid connector includes an optical signal coupling point, an electrical signal connection point, and a positioning pin; Figure 5 This is a schematic diagram of a light source optoelectronic hybrid connector according to an embodiment of this application. Figure 2 ,like Figure 5 As shown, the optoelectronic hybrid connector includes an optical signal coupling point, an electrical signal connection point, and a positioning hole. The optical signal coupling point is used to transmit light to the CPO switch; the electrical signal connection point and the positioning pin are used to connect to the controller; or, the electrical signal connection point and the positioning hole are used to connect to the controller.

[0044] This application's embodiments primarily focus on optimizing centralized lighting supply for CPOs (Concentrated Optical Probes). Firstly, regarding light source failure switching, once the CPO detects a missing or lost input light source, it immediately notifies the controller to switch to the existing light source, enabling hot switching and significantly reducing packet loss. Secondly, based on the health status of the light sources, the controller predicts potential anomalies in certain sources and, after notifying the CPO, automatically switches to backup light sources. Thirdly, an m+n backup scheme is implemented for the light source pool, meaning m light sources are in operation while n light sources are in backup mode, with a certain amount of hot and cold backup configured among these n backups. This application's embodiments can achieve zero light source failures.

[0045] The light source pool system described in this application can be horizontally expanded, meaning that multiple light source pools can be horizontally expanded using a single controller, enabling unified management and control of multiple light source pools. The controller itself can only be expanded via expansion slots.

[0046] In this embodiment, a hybrid optoelectronic connector similar to the CPO is used to achieve the aforementioned information handshake and reduce panel space, allowing a 1RU space panel to connect more optical fibers using the hybrid optoelectronic connector in this embodiment. The electrical channel enables information exchange between the CPO and the light source pool, while the optical path enables the coupled transmission of optical signals.

[0047] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A centralized light supply device, characterized by, The centralized light supply device includes: a controller, at least one light source pool, and multiple co-packaged optical CPO switches. The controller is connected to the light source pool and the CPO switches through a bidirectional communication channel. The light source pool and the CPO switches are connected through a hybrid optoelectronic connector. The controller is used to control the light source pool and the CPO switch; The light source pool is used to output the light source to the CPO switch under the control of the controller; The CPO switch is used to modulate the received light source into an optical signal under the control of the controller, and output the optical signal; The light source pool includes: multiple light sources and an optical cross-connect matrix. The optical cross-connect matrix is ​​connected to the multiple light sources and the CPO switch via optical fibers. The multiple light sources are connected to the controller. The multiple light sources and the optical cross-connect matrix in the light source pool are integrated into a single module. The light source pool has a built-in internal controller.

2. The centralized light supply device according to claim 1, characterized in that, The controller includes a control unit and an external interface. The external interface includes a first interface connected to the CPO switch and a second interface connected to the light source and the optical cross-matrix.

3. The centralized light supply device according to claim 1, characterized in that, The multiple light sources include multiple normal light sources, hot standby light sources, and cold standby light sources. The optical cross-matrix includes multiple controllable optical switches. The CPO switch includes multiple CPO modules. One controllable optical switch is connected to one normal light source. All of the multiple controllable optical switches are connected to the hot standby light source and the cold standby light source. One controllable optical switch is connected to one CPO module. The controllable optical switches are used to arbitrarily switch between the input light source and the output light source and to protect the light source.

4. The centralized light supply device according to claim 3, characterized in that, The controller is also used to shut down the optical cross-connect matrix after power-on; and to control the start of the light source corresponding to the target CPO module after handshaking and confirmation with the target CPO module in the CPO switch. The target CPO module is used to send light source connection status information to the controller after handshaking and confirming with the controller.

5. The centralized light supply device according to claim 4, characterized in that, The target CPO module is also used to write the light source connection status information into a status register; The controller is configured to obtain the light source connection status information of the target CPO module by polling the status register, and after determining that the target CPO module indicates that the light source is to be turned on, control the opening of the controllable light switch corresponding to the target CPO module to start the light source.

6. The centralized light supply device according to claim 3, characterized in that, The CPO module is also used to store information about the faulty light source in the status register if it is found that the received light source is unstable or no light source is received. The controller obtains and notifies the light source pool of information about the faulty light source by polling the status register. The light source pool is used to switch the hot standby light source to the faulty light source after confirming the information of the faulty light source, and at the same time change the cold standby light source to the hot standby light source, and send a warning signal to the controller. The controller is also used to maintain the light source of the light source pool according to the warning signal.

7. The centralized light supply device according to claim 3, characterized in that, The CPO module is used to acquire fault information of the target light source, adjust the flow rate according to the fault information of the target light source, and write the fault information of the target light source into the status register. The fault information of the target light source is determined in advance by the controller based on the historical usage data of the light source and the status data of the optical cross matrix and written into the register. The controller is also used to obtain fault information of the target light source by polling the status register, and to notify the controllable light switch corresponding to the CPO module to switch the light source.

8. The centralized light supply device according to claim 3, characterized in that, The CPO module is used to detect when the connection with the optoelectronic hybrid connector is lost and write the corresponding light source absence information into the status register; The controller is also configured to obtain information about the absence of the light source corresponding to the CPO module by polling the status register, and control the light source corresponding to the CPO module to be turned off.

9. The centralized light supply device according to any one of claims 1 to 8, characterized in that, The optoelectronic hybrid connector includes an optical signal coupling point, an electrical signal connection point, and a positioning pin; alternatively, the optoelectronic hybrid connector includes an optical signal coupling point, an electrical signal connection point, and a positioning hole. The optical signal coupling point is used to transmit the light source to the CPO switch; The electrical signal connection point and positioning pin are used to connect to the controller; or, the electrical signal connection point and positioning hole are used to connect to the controller.

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