Insertion loss measurement method, controller, receiving unit, system and related devices

Abstract

This application discloses an insertion loss measurement method, controller, receiving unit, system, and related equipment, belonging to the field of communication technology. The method, applied to an insertion loss measurement controller, includes: responding to a received measurement request, controlling a transmitting unit to transmit detection light to an optical cross-connect system; sending detection light transmission information to a receiving unit, wherein the receiving unit includes a first receiving unit and a second receiving unit; the first receiving unit is disposed in a first slot on a first optical board in the optical cross-connect system, and the second receiving unit is disposed in a second slot on a second optical board in the optical cross-connect system; determining the insertion loss measurement result between the first slot and the second slot based on a first power of the detection light detected by the first receiving unit and a second power of the detection light detected by the second receiving unit. This method can reduce the internal losses of the detection equipment during insertion loss measurement and improve the accuracy of the insertion loss measurement results.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an insertion loss measurement method, controller, receiving unit, system and related equipment. Background Technology

[0002] An optical cross-connect (OXC) system is a device used for optical signal routing and switching in fiber optic communication networks. OXC systems typically use an optical cross-matrix for connection, with wavelength selective switches (WSS) or couplers on both sides, and the optical path pre-deployed in the central cross-matrix. Because the optical fibers on the cross-matrix side are easily contaminated or have poor contact, and because problems are difficult to detect directly on the cross-matrix side, it is necessary to use testing equipment to detect the insertion loss of each fiber segment to determine if there are any problems with the fiber.

[0003] Existing insertion loss measurement equipment is typically controlled by a controller, utilizing a detection optical emitting unit to emit light, a detection optical receiving unit to receive light, and automatically switching optical transmission interfaces to detect insertion loss within the fiber optic matrix. However, during the insertion loss measurement process, the optical signal transmission path passes through losses within the detection equipment, such as optical path loss between the detection optical receiving unit and the controller, leading to errors in the insertion loss measurement results. Summary of the Invention

[0004] This application provides an insertion loss measurement method, controller, receiving unit, system, and related equipment to at least solve the problem of internal loss in existing testing equipment during insertion loss measurement.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application provide an insertion loss measurement method applied to an insertion loss measurement controller, comprising: responding to a received measurement request, controlling a transmitting unit to transmit detection light to an optical cross-connect system; sending detection light transmission information to a receiving unit, wherein the receiving unit includes a first receiving unit and a second receiving unit; the first receiving unit is disposed in a first slot on a first optical board in the optical cross-connect system, and the second receiving unit is disposed in a second slot on a second optical board in the optical cross-connect system, the detection light transmission information being used to instruct the receiving unit to establish an optical path for transmitting the detection light between the first slot and the second slot; determining an insertion loss measurement result between the first slot and the second slot based on a first power of the detection light detected by the first receiving unit and a second power of the detection light detected by the second receiving unit.

[0006] Secondly, embodiments of this application provide an insertion loss measurement method applied to a receiving unit, the receiving unit including a first receiving unit and a second receiving unit; the first receiving unit is disposed in a first slot on a first optical board in the optical cross-connect system, and the second receiving unit is disposed in a second slot on a second optical board in the optical cross-connect system, comprising: acquiring detection light transmission information sent by an insertion loss measurement controller; determining a target optical receiving port among a plurality of optical receiving ports according to the detection light transmission information; receiving detection light through the target optical receiving port; detecting a first power of the detection light in the first slot and detecting a second power of the detection light in the second slot; sending the first power and the second power to the insertion loss measurement controller, wherein the insertion loss measurement controller is used to determine the insertion loss measurement result between the first slot and the second slot according to the first power and the second power.

[0007] Thirdly, embodiments of this application provide an insertion loss measurement controller, characterized in that the insertion loss measurement controller includes a processor and a memory, the memory storing programs or instructions that can run on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method described in the first or second aspect above.

[0008] Fourthly, embodiments of this application provide a receiving unit, the receiving unit including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions being executed by the processor to implement the steps of the method described in the first or second aspect above.

[0009] Fifthly, embodiments of this application provide an insertion loss measurement system, including an insertion loss measurement controller as described in the first aspect above, and a transmitting unit and a receiving unit as described in the second aspect above, which are respectively communicatively connected to the insertion loss measurement controller; the transmitting unit includes multiple optical transmitting ports, which are used to transmit detection light of different frequencies; the receiving unit includes an optical power detection device and multiple optical receiving ports, the optical power detection device is used to detect the power of the detection light in the slot where the receiving unit is located, and the multiple optical receiving ports correspond to the multiple optical transmitting ports, which are used to receive detection light of different frequencies.

[0010] Sixthly, embodiments of this application provide an optical network device, which includes an optical cross-connect system and an insertion loss measurement system as described in the fifth aspect above; the optical cross-connect system includes a first optical board and a second optical board, a first slot on the first optical board is provided with a first receiving unit of the insertion loss measurement system, and a second slot on the second optical board is provided with a second receiving unit of the insertion loss measurement system.

[0011] In a seventh aspect, embodiments of this application provide a computer-readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first or second aspect above.

[0012] Eighthly, embodiments of this application provide a computer program product, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, which, when executed by a computer, cause the computer to perform the steps of the method described in the first or second aspect above.

[0013] In this embodiment, the insertion loss measurement controller, in response to a received measurement request, controls the transmitting unit to transmit detection light to the optical cross-connect system; and sends detection light transmission information to the receiving unit, wherein the receiving unit includes a first receiving unit and a second receiving unit; the first receiving unit is disposed in a first slot on a first optical board in the optical cross-connect system, and the second receiving unit is disposed in a second slot on a second optical board in the optical cross-connect system; based on the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit, the insertion loss measurement result between the first slot and the second slot is determined. Thus, by separately setting detection light receiving units in slots on different optical boards in the optical cross-connect system, and determining the insertion loss measurement result based on the power detected by the two receiving units, the optical path loss between the insertion loss measurement controller and the receiving unit can be effectively separated from the measurement result, thereby reducing the internal loss of the detection equipment and improving the accuracy of the insertion loss measurement result.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0016] Figure 1 A schematic flowchart of an insertion loss measurement method provided in an embodiment of this application is shown; Figure 2 A subframe block diagram of the optical cross-connect system provided in an embodiment of this application is shown; Figure 3 This paper illustrates a subrack cascading scenario of the optical cross-connect system provided in an embodiment of this application. Figure 4 This paper illustrates another flowchart of the insertion loss measurement method provided in an embodiment of this application; Figure 5A flowchart illustrating the insertion loss measurement method within a subframe provided in an embodiment of this application is shown. Figure 6 A flowchart illustrating the insertion loss measurement method in a subrack cascading scenario provided in this application embodiment is shown. Figure 7 A schematic diagram of the hardware structure of the insertion loss measurement controller provided in an embodiment of this application is shown; Figure 8 A schematic diagram of the hardware structure of the receiving unit provided in an embodiment of this application is shown; Figure 9 A schematic diagram of the insertion loss measurement controller provided in an embodiment of this application is shown; Figure 10 A schematic diagram of the receiving unit provided in an embodiment of this application is shown. Detailed Implementation

[0017] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0018] Optical cross-connect (OXC) is a method for achieving high-speed cross-connection of optical signals and is widely used in fiber optic network nodes. By optically cross-connecting signals, OXC enables flexible and efficient management of fiber optic transmission networks and provides crucial support for network protection, recovery, automatic distribution, and monitoring. Fiber insertion loss is a key indicator of optical transmission quality in the communications field, directly affecting the transmission effect and quality of optical signals. In OXC systems, optical fibers are typically integrated within the subrack backplane and connected using an optical cross-connect matrix.

[0019] To facilitate convenient and rapid measurement of fiber insertion loss within optical cross-connect matrices, existing insertion loss measurement equipment is typically controlled by a controller. This involves detecting light emission from a detection optical transmitter, receiving light from a detection optical receiver, and automatically switching optical transmission interfaces to detect insertion loss within the fiber matrix. During the insertion loss measurement process, the optical signal transmission path passes through losses within the detection equipment, such as optical path loss between the detection optical receiver and the controller, leading to errors in the insertion loss measurement results.

[0020] To address the problems existing in the insertion loss measurement equipment during the insertion loss detection process, this application provides an insertion loss detection method. This method involves setting up receiving units for detection light in the slots of different optical boards in the optical cross-connect system, and determining the insertion loss measurement result based on the power detected by the two receiving units. This separates the optical path loss between the insertion loss measurement controller and the receiving unit from the measurement result, thereby reducing the internal loss of the detection equipment and improving the accuracy of the insertion loss measurement result.

[0021] Please see Figure 1 , Figure 1 A schematic flowchart of an insertion loss measurement method provided in an embodiment of this application is shown. The execution entity of this method can be an insertion loss measurement controller. As shown in the figure, the insertion loss measurement method 100 may include the following steps: Step 101: In response to the received measurement request, control the transmitting unit to transmit detection light to the optical cross-connect system.

[0022] In practical implementation, when the insertion loss measurement controller receives a measurement request, it controls the transmitting unit to emit detection light to the optical cross-connect (OXC) system. To avoid interference with the main signal during transmission, the detection light can be selected as out-of-band light to ensure the accuracy of the measurement process. The transmitting unit can be integrated into the insertion loss measurement controller, which directly controls its emission of detection light to the OXC system. Alternatively, the transmitting unit can communicate with the insertion loss measurement controller, which sends control commands to the transmitting unit to control its emission of detection light to the OXC system.

[0023] Step 102: Send detection light transmission information to the receiving unit, wherein the receiving unit includes a first receiving unit and a second receiving unit; the first receiving unit is disposed in a first slot on a first optical board in the optical cross-connect system, and the second receiving unit is disposed in a second slot on a second optical board in the optical cross-connect system, and the detection light transmission information is used to instruct the receiving unit to open the optical path between the first slot and the second slot for transmitting the detection light.

[0024] In practical implementation, the insertion loss measurement controller sends detection light transmission information to the receiving unit. This detection light transmission information may include slot information, wavelength information of the detection light, etc. The first receiving unit, located in the first slot on the first optical board of the OXC system, and the second receiving unit, located in the second slot on the second optical board of the OXC system, after acquiring the detection light transmission information, establish the optical path for transmitting the detection light between the first and second slots to facilitate the acquisition of the detection light power at the corresponding slot.

[0025] Step 103: Determine the insertion loss measurement result between the first slot and the second slot based on the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit.

[0026] In a specific implementation, the insertion loss measurement controller acquires the first power detected by the first receiving unit and the second power detected by the second receiving unit, and determines the insertion loss measurement result between the two slots based on the first power and the second power. For example, the difference between the first power and the second power can be determined as the insertion loss measurement result.

[0027] Through the above steps, a first receiving unit is set in the slot of the first optical board in the optical cross-connect system, and a second receiving unit is set in the slot of the second optical board in the optical cross-connect system. The insertion loss measurement result is determined based on the power of the detection light detected by the two receiving units. This can effectively separate the optical path loss between the insertion loss measurement controller and the receiving unit from the measurement result, thereby reducing the loss inside the detection equipment and improving the accuracy of the insertion loss measurement result.

[0028] In one possible implementation, step 101 above, controlling the transmitting unit to emit detection light to the optical cross-connect system, includes: The system acquires the band information of the receiving unit in the optical cross-connect system; determines the target frequency of the detection light based on the band information of the receiving unit; and controls the transmitting unit to send the detection light of the target frequency to the optical cross-connect system.

[0029] Due to limitations in hardware structure, existing insertion loss measurement devices can only monitor C-band detection light. Therefore, these devices are limited to measuring insertion loss of backplane optical fibers in C-band OXC systems. In this embodiment, the insertion loss measurement controller acquires the band information of the receiving units in the OXC system (e.g., the first receiving unit supports C-band, and the second receiving unit supports C+L band). Based on this band information, it determines the target frequency of the detection light and then controls the transmitting unit to send the detection light at the target frequency to the OXC system. The band information of the receiving units can be pre-stored in a storage area corresponding to the insertion loss measurement controller. The controller retrieves the band information by querying the storage area. Alternatively, the controller can send a query command to the receiving units to obtain their band information.

[0030] In practical applications, the transmitting unit can be a controllable detection optical transmitter, which includes multiple optical transmission ports to support the transmission of out-of-band wavelengths in the C+L band, and the output power can be adjusted. In this way, the insertion loss measurement controller can control the transmitting unit to transmit detection light that is compatible with the band information of the receiving unit to the OXC system, thereby making it applicable to OXC systems in the C+L band and expanding the application scenarios of this insertion loss measurement method.

[0031] The acquisition of the band information of the receiving unit in the optical cross-connect system mentioned above includes: Send a band query request to the receiving unit in the optical cross-connect system; obtain the band information of the receiving unit based on the band query response returned by the receiving unit.

[0032] In this embodiment, the insertion loss measurement controller sends a band query request to the receiving unit to obtain the band information of the receiving unit. Upon receiving the band query request, the receiving unit extracts the band information from its storage unit and encapsulates this band information into a band query response. The receiving unit then sends the band query response back to the insertion loss measurement controller to complete the transmission of the band information.

[0033] In this way, the insertion loss measurement controller can dynamically acquire the band information of the receiving unit and adjust the frequency of the detection light according to the latest band information of the receiving unit, thereby improving the efficiency of insertion loss measurement.

[0034] The aforementioned determination of the target frequency of the detection light based on the band information of the receiving unit includes: Obtain the target band from the band information of the receiving unit; determine the frequency corresponding to the target band according to the preset correspondence between bands and frequencies, and determine the frequency as the target frequency for the detection light.

[0035] In one exemplary embodiment, the target band in the band information of the receiving unit is obtained. For example, the band information of the first receiving unit is C, and the band information of the second receiving unit is C+L. Based on a preset correspondence between bands and frequencies, the frequency corresponding to the target band is determined. For example, if the band information of both receiving units is C, it corresponds to a frequency of 196.75 Hz; if the band information of both receiving units is L, it corresponds to a frequency of 190.45 Hz; if the band information of both receiving units is C+L, it corresponds to a frequency of 196.75 Hz; if the band information of one receiving unit is C and the band information of the other receiving unit is C+L, it corresponds to a frequency of 196.75 Hz; if the band information of one receiving unit is L and the band information of the other receiving unit is C+L, it corresponds to a frequency of 190.45 Hz; if the band information of one receiving unit is C and the band information of the other receiving unit is L, this scenario cannot be measured. Based on the preset correspondence between bands and frequencies, the frequency corresponding to the target band is determined to be 196.75 GHz, and this frequency is set as the target frequency for the detection light.

[0036] In this way, by selecting the appropriate detection optical frequency for measurement based on the different band information of the receiving unit, the insertion measurement can cover OXC systems with multiple different bands, thus improving the flexibility of insertion loss measurement.

[0037] In one possible implementation, step 103 above, determining the insertion loss measurement result between the source slot and the destination slot based on the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit, includes: The difference between the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit is determined as the insertion loss measurement result between the source slot and the destination slot.

[0038] This method can separate the optical path loss between the insertion loss measurement controller and the receiving unit from the measurement results, thereby reducing the internal loss of the detection equipment and improving the accuracy of the insertion loss measurement results.

[0039] In one possible implementation, step 103 above, determining the insertion loss measurement result between the source slot and the destination slot based on the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit, includes: The total insertion loss of the optical path assignment device is determined based on the first insertion loss value of the optical path assignment device corresponding to the first receiving unit and the second insertion loss value of the optical path assignment device corresponding to the second receiving unit. The result obtained by subtracting the total insertion loss of the optical path assignment device from the difference between the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit is determined as the insertion loss measurement result between the source slot and the destination slot.

[0040] In an exemplary embodiment, the insertion loss measurement result can be determined by the following formula: S = P1 - P2 - (L1 + L2); Where S is the insertion loss measurement result, P1 is the first power of the detection light, P2 is the second power of the detection light, L1 is the first insertion loss value, and L2 is the second insertion loss value.

[0041] In this way, by calculating the power difference detected by the first receiving unit and the second receiving unit, and subtracting the total insertion loss of the optical path assignment device, the insertion loss error caused by the optical path assignment device can be eliminated, further improving the accuracy and reliability of the insertion loss measurement results.

[0042] In one possible implementation, the aforementioned optical cross-connect system includes a first optical cross-connect subframe, which includes a first slot and a second slot.

[0043] In one exemplary embodiment, such as Figure 2 As shown, the optical cross-connect system includes a first optical cross-connect subframe 200, which includes an auxiliary optical board slot 201 and multiple optical board slots 202. The transmitting unit and insertion loss measurement controller can be integrated on an M2OXM board, and the receiving unit is integrated on an M2OXL board. The M2OXM board is located in the auxiliary optical board slot 201 of the first optical cross-connect subframe 200. Any two of the multiple optical board slots 202 are selected as the first slot and the second slot, and M2OXL boards are respectively installed in the first slot and the second slot. The insertion loss measurement controller determines the insertion loss measurement result between the first slot and the second slot based on the detected optical power detected by the receiving unit installed in the first slot and the second slot.

[0044] This method allows for the measurement of fiber insertion loss within the same optical cross-connect subrack.

[0045] In one possible implementation, the aforementioned optical cross-connect system includes a second optical cross-connect subrack and a third optical cross-connect subrack, which are cascaded together and dynamically configured via inter-network element board communication; the second optical cross-connect subrack includes the first slot, and the third optical cross-connect subrack includes the second slot.

[0046] In one exemplary embodiment, a single M2OXC subrack supports optical cross-connection in up to 16 directions, and two stacked M2OXC subracks support optical cross-connection in 32 directions. The OXC boards on the subrack are fixed at 32 dimensions. Ports 1-16 of the OXC board backplane module on the main network element implement the optical cross-connection function within the subrack, and ports 17-32 are connected to the subrack backplane on the slave network element via external optical fibers, forming an OXC32 system. Two subracks can be connected via Multi-fiber Push-On (MPO) connectors, and the ports used for connecting the optical fibers are fixed. Figure 3 As shown, the optical cross-connect system includes a second optical cross-connect subrack 310 and a third optical cross-connect subrack 320. The second optical cross-connect subrack 310 and the third optical cross-connect subrack 320 are cascaded with each other through port 313 and the dynamic configuration of the optical path is realized through cross-network element board communication. The second optical cross-connect subrack 310 includes a first slot 312 and the third optical cross-connect subrack 320 includes a second slot 322. The first slot 312 can be a slot on any optical board in the second cross-connect subrack 310, and the second slot 322 can be a slot on any optical board in the third cross-connect subrack 320.

[0047] Since existing insertion loss measurement equipment is usually controlled by a controller, it uses a detection optical emitting unit to emit light, a detection optical receiving unit to receive light, and automatically switches the optical transmission interface to detect insertion loss within the fiber matrix. Message transmission between insertion loss measurement equipment does not support cross-subrack transmission. Therefore, existing insertion loss measurement equipment can only measure fiber insertion loss within the same cross-connect subrack. The method provided in this application embodiment can be applied to cascaded subrack scenarios in OXC systems, and its application scenarios are more extensive compared to existing insertion loss measurement equipment.

[0048] In one possible implementation, after determining the insertion loss measurement result between the first slot and the second slot based on the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit in step 103 above, the method further includes: In response to a measurement result query request sent by the network management server, the insertion loss measurement result is sent to the network management server.

[0049] In this embodiment, the user can send a measurement result query request through the network management server, and the insertion loss measurement controller will return the calculated insertion loss measurement result to the network management server.

[0050] Please see Figure 4 , Figure 4This paper illustrates another flowchart of the insertion loss measurement method provided in an embodiment of this application. The execution entity of this method can be a receiving unit, which includes a first receiving unit and a second receiving unit; the first receiving unit is disposed in a first slot on a first optical board in the optical cross-connect system, and the second receiving unit is disposed in a second slot on a second optical board in the optical cross-connect system; as shown in the figure, the insertion loss measurement method 400 may include the following steps: Step 401: Obtain the detection optical transmission information sent by the insertion loss measurement controller.

[0051] The detection light transmission information includes slot information, wavelength information of the detection light, etc.

[0052] Step 402: Based on the detected optical transmission information, determine the target optical receiving port among multiple optical receiving ports.

[0053] The first receiving unit and the second receiving unit determine the target optical receiving port among multiple optical receiving ports by configuring a wavelength selective switch (WSS) based on the detection light transmission information, thereby opening up the optical path between two slots in the slot information for transmitting detection light.

[0054] Step 403: Receive detection light through the target light receiving port.

[0055] Step 404: Detect the first power of the detection light in the first slot and the second power of the detection light in the second slot.

[0056] Step 405: Send the first power and the second power to the insertion loss measurement controller.

[0057] The insertion loss measurement controller is used to determine the insertion loss measurement result between the first slot and the second slot based on the first power and the second power.

[0058] In this way, by setting up receiving units for detection light in the slots of different optical boards in the optical cross-connect system, and determining the insertion loss measurement results based on the power detected by the two receiving units, the optical path loss between the insertion loss measurement controller and the receiving unit can be effectively separated from the measurement results, thereby reducing the internal loss of the detection equipment and improving the accuracy of the insertion loss measurement results.

[0059] In one possible implementation, before obtaining the detection optical transmission information sent by the insertion loss measurement controller in step 401 above, the method further includes: In response to a band query request sent by the insertion loss measurement controller, the band information of the receiving unit is obtained; a band query response is sent to the insertion loss measurement controller, the band query response including the band information of the receiving unit.

[0060] In this way, the band information of the receiving unit is sent to the insertion loss measurement controller, so that the insertion loss measurement controller can determine the target frequency of the detection light based on the band information of the receiving unit, thereby controlling the transmitting unit to emit detection light that matches the band information of the receiving unit.

[0061] In an exemplary embodiment, for a subrack insertion loss measurement scenario, taking the integration of the transmitting unit and insertion loss measurement controller on an OXM board and the receiving unit on an OXL board as an example, the above-mentioned insertion loss measurement method will be described, as follows: Figure 5 As shown, the insertion loss measurement method includes the following steps: Step 501: The user initiates a measurement request through the network management server; Step 502: The main controller determines the corresponding OXM based on the measurement request and transmits the measurement request to the OXM; Step 503: The OXM turns on the emitting unit, such as a laser, to emit detection light into the OXM system; Step 504: OXM sets the WSS of the slot to be tested, that is, sends detection light transmission information to the first OXL and the second OXL so that the first OXL and the second OXL open the optical path for transmitting detection light between the slots to be tested. The detection light transmission information includes the slot information of the two OXLs and the wavelength information of the detection light. Step 505: The first OXL and the second OXL connect the optical path for transmitting detection light between the two slots by setting the WSS; Step 506: The first OXL and the second OXL read the corresponding photodetector (PD) detection points and obtain the power value of the detection light detected at the PD detection point, wherein the first power PDA measurement value of the detection light detected by the first OXL and the second power PDB measurement value of the detection light detected by the second OXL. Step 507: The first OXL and the second OXL return the PD measurement values ​​to the OXM respectively, wherein the PD measurement values ​​include the PD A measurement value and the PD B measurement value; Step 508: OXM calculates insertion loss based on the PDA and PDB measurements; Step 509: The user sends a measurement result query request through the network management server, and the main controller transmits the query request to OXM; Step 510: OXM responds that the measurement has been completed and returns the insertion loss measurement results to the network management server.

[0062] This method allows for the measurement of fiber insertion loss within the same optical cross-connect subrack.

[0063] In an exemplary embodiment, for a subrack cascading scenario, taking the integration of the transmitting unit and insertion loss measurement controller on an OXM board and the receiving unit on an OXL board as an example, the above-mentioned insertion loss measurement method will be described, as follows: Figure 6 As shown, the insertion loss measurement method includes the following steps: Step 601: The user initiates a measurement request through the network management server; Step 602: The main controller determines the corresponding OXM based on the measurement request and transmits the measurement request to the OXM; Step 603: The OXM turns on the emitting unit, such as a laser, to emit detection light into the OXM system; Step 604: The OXM sets the WSS of the slot under test, that is, sends detection light transmission information to the master network element OXL and the slave network element OXL, so that the master network element OXL and the slave network element OXL can establish the optical path for transmitting detection light between the slots under test. The detection light transmission information includes the slot information of the two OXLs and the wavelength information of the detection light; wherein, the OXM can send the detection light transmission information to the slave network element OXL through cross-network element board communication; Step 605: The master network element OXL and the slave network element OXL connect the optical path between the two slots for transmitting detection light by setting WSS; Step 606: The master network element OXL and the slave network element OXL read the corresponding photodetector (PD) detection points and obtain the power value of the detection light detected at the PD detection point. Among them, the first power PDA measurement value of the detection light detected by the master network element OXL and the second power PDB measurement value of the detection light detected by the slave network element OXL are obtained. Since there is a time delay in the communication between network element boards, in order to ensure the consistency of power detection between the master network element OXL and the slave network element OXL, the master network element OXL can delay for a preset time, such as 5 seconds, before reading the PDA measurement value. Step 607: The master network element OXL and the slave network element OXL return the PD measurement values ​​to the OXM respectively, wherein the PD measurement values ​​include the PD A measurement value and the PD B measurement value; Step 608: OXM calculates insertion loss based on the PDA and PDB measurements; Step 609: The user sends a measurement result query request through the network management server, and the main controller transmits the query request to OXM; Step 610: OXM responds that the measurement has been completed and returns the insertion loss measurement results to the network management server.

[0064] This method enables the measurement of fiber optic insertion loss in scenarios where OXC system subracks are cascaded.

[0065] Figure 7This diagram illustrates the hardware structure of the insertion loss measurement controller 700 implementing the embodiments of this application. Referring to the diagram, at the hardware level, the insertion loss measurement controller 700 includes a processor 710, and optionally includes an internal bus 720, a network interface 730, and a memory 740. The memory 740 may include RAM 741, such as high-speed random-access memory (RAM), and may also include non-volatile memory 742, such as at least one disk storage device. Of course, the insertion loss measurement controller 700 may also include other hardware required for other services.

[0066] The processor 710, network interface 730, and memory can be interconnected via an internal bus 720. This internal bus 720 can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be categorized as an address bus, data bus, control bus, etc. For ease of illustration, only a single bidirectional arrow is used in this diagram, but this does not imply that there is only one bus or one type of bus.

[0067] Memory 740 stores programs. Specifically, the program may include program code, which includes computer operation instructions. Memory 740 may include main memory 741 and non-volatile memory 742, and provides instructions and data to processor 710.

[0068] The processor 710 reads the corresponding computer program from the non-volatile memory 742 into memory and then runs it, forming a device for locating the target user at the logical level. The processor 710 executes the program stored in memory and specifically performs the following: Figure 1 or Figure 4 The methods disclosed in the embodiments shown achieve the functions and beneficial effects of the methods described in the preceding method embodiments, and will not be repeated here.

[0069] Of course, in addition to the software implementation, the insertion loss measurement controller 700 of this application does not exclude other implementation methods, such as logic devices or a combination of hardware and software, etc. In other words, the execution subject of the following processing flow is not limited to each logic unit, but can also be hardware or logic devices.

[0070] Figure 8The diagram illustrates the hardware structure of the receiving unit provided in this application embodiment. Referring to the diagram, at the hardware level, the receiving unit 800 includes a processor 810, and optionally includes an internal bus 820, a network interface 830, and a memory 840. The memory 840 may include main memory 841, such as high-speed random-access memory (RAM), and may also include non-volatile memory 842, such as at least one disk storage device. Of course, the receiving unit 800 may also include other hardware required for other services.

[0071] The processor 810, network interface 830, and memory can be interconnected via an internal bus 820. This internal bus 820 can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be categorized as an address bus, data bus, control bus, etc. For ease of illustration, only a single bidirectional arrow is used in this diagram, but this does not imply that there is only one bus or one type of bus.

[0072] Memory 840 stores programs. Specifically, the program may include program code, which includes computer operation instructions. Memory 840 may include main memory 841 and non-volatile memory 842, and provides instructions and data to processor 810.

[0073] The processor 810 reads the corresponding computer program from the non-volatile memory 842 into memory and then runs it, forming a device for locating the target user at the logical level. The processor 810 executes the program stored in memory and specifically performs the following: Figure 1 or Figure 4 The methods disclosed in the embodiments shown achieve the functions and beneficial effects of the methods described in the preceding method embodiments, and will not be repeated here.

[0074] Of course, in addition to the software implementation, the receiving unit 800 of this application does not exclude other implementation methods, such as logic devices or a combination of hardware and software, etc. In other words, the execution subject of the following processing flow is not limited to each logic unit, but can also be hardware or logic devices.

[0075] This application also proposes an insertion loss measurement system, including the insertion loss measurement controller described above, and a transmitting unit and a receiving unit that are respectively communicatively connected to the insertion loss measurement controller. The transmitting unit includes multiple optical transmission ports, which are used to transmit detection light of different frequencies; The receiving unit includes an optical power detection device and multiple optical receiving ports. The optical power detection device is used to detect the power of the detection light in the slot where the receiving unit is located. The multiple optical receiving ports correspond to the multiple optical transmitting ports and are used to receive detection light of different frequencies.

[0076] The transmitting unit can be integrated into the insertion loss measurement controller, for example, such as... Figure 9 As shown, the insertion loss measurement controller 900 includes a C+L band light-emitting unit 910 and a first optical transmission port conversion unit 920. The C+L band light-emitting unit 910 is used to emit detection light at the target frequency; the first optical transmission port conversion unit 920 is used to convert the optical signal transmission path between multiple optical transmission ports. In a specific application, the C+L band light-emitting unit 910 includes an integrated tunable laser assembly (ITLA), and the first optical transmission port conversion unit 920 includes an M*N optical switch, where M and N are positive integers.

[0077] like Figure 10 As shown, the receiving unit 1000 includes a second optical transmission port conversion unit 1010, a C+L band wavelength assignment unit 1020, and an optical power detection device; the second optical transmission port conversion unit 1010 is used to convert the optical signal transmission path between multiple optical receiving ports; the C+L band wavelength assignment unit 1020 is used to configure the WSS according to the received detection light transmission information and assign the optical path for transmitting detection light between the slots where the first receiving unit and the second receiving unit are located to be connected; the optical power detection device includes C-band and L-band PD out-of-band wavelength detection optical units.

[0078] This application also proposes an optical network device, which includes an optical cross-connect system and the aforementioned insertion loss measurement system. The optical cross-connect system includes a first optical board and a second optical board. A first receiving unit of the aforementioned insertion loss measurement system is disposed in a first slot on the first optical board, and a second receiving unit of the aforementioned insertion loss measurement system is disposed in a second slot on the second optical board.

[0079] This application also proposes a computer-readable storage medium that stores one or more programs, which, when executed by a network device including multiple applications, cause the network device to perform... Figure 1 or Figure 4 The methods disclosed in the embodiments shown achieve the functions and beneficial effects of the methods described in the preceding method embodiments, and will not be repeated here.

[0080] The computer-readable storage medium mentioned above includes read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc.

[0081] Furthermore, embodiments of this application also provide a computer program product, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, which, when executed by a computer, implement the following process: Figure 1 or Figure 4 The methods disclosed in the embodiments shown achieve the functions and beneficial effects of the methods described in the preceding method embodiments, and will not be repeated here.

[0082] The embodiments of this application can be applied to various network device collaboration or interconnection scenarios, including: collaboration and interconnection between mobile phones and laptops / tablets; collaboration and interconnection between mobile terminals and smart TVs / monitors; collaboration and interconnection between mobile phones or tablets and in-vehicle entertainment systems; collaboration and interconnection between mobile terminals and smart conferencing systems, etc. This satisfies users' diverse needs in smart home, smart office, and smart travel scenarios.

[0083] In summary, the above description is merely a preferred embodiment of this application and does not limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for measuring insertion loss, characterized in that, Applications in insertion loss measurement controllers include: In response to the received measurement request, the control unit transmits detection light to the optical cross-connect system; Sending detection light transmission information to the receiving unit, wherein the receiving unit includes a first receiving unit and a second receiving unit; the first receiving unit is disposed in a first slot on a first optical board in the optical cross-connect system, and the second receiving unit is disposed in a second slot on a second optical board in the optical cross-connect system; the detection light transmission information is used to instruct the receiving unit to open the optical path between the first slot and the second slot for transmitting the detection light. The insertion loss measurement result between the first slot and the second slot is determined based on the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit.

2. The method according to claim 1, characterized in that, The control transmitting unit transmits detection light to the optical cross-connect system, including: Obtain the band information of the receiving unit in the optical cross-connect system; The target frequency of the detection light is determined based on the band information of the receiving unit; The control unit sends the detection light of the target frequency to the optical cross-connect system.

3. The method according to claim 2, characterized in that, The acquisition of the band information of the receiving unit in the optical cross-connect system includes: Send a band query request to the receiving unit in the optical cross-connect system; Based on the band query response returned by the receiving unit, the band information of the receiving unit is obtained.

4. The method according to claim 2, characterized in that, Determining the target frequency of the detection light based on the band information of the receiving unit includes: Obtain the target band from the band information of the receiving unit; Based on the preset correspondence between bands and frequencies, the frequency corresponding to the target band is determined, and the frequency is set as the target frequency for the detection light.

5. The method according to claim 1, characterized in that, The step of determining the insertion loss measurement result between the source slot and the destination slot based on the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit includes: The difference between the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit is determined as the insertion loss measurement result between the source slot and the destination slot.

6. The method according to claim 1, characterized in that, The step of determining the insertion loss measurement result between the source slot and the destination slot based on the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit includes: The total insertion loss of the optical path assignment device is determined based on the first insertion loss value of the optical path assignment device corresponding to the first receiving unit and the second insertion loss value of the optical path assignment device corresponding to the second receiving unit. The result obtained by subtracting the total insertion loss of the optical path assignment device from the difference between the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit is determined as the insertion loss measurement result between the source slot and the destination slot.

7. The method according to claim 1, characterized in that, The optical cross-connect system includes a first optical cross-connect subframe, which includes a first slot and a second slot.

8. The method according to claim 1, characterized in that, The optical cross-connect system includes a second optical cross-connect subrack and a third optical cross-connect subrack. The second optical cross-connect subrack and the third optical cross-connect subrack are cascaded with each other and the dynamic configuration of the optical path is realized through cross-network element board communication. The second optical cross-connect subrack includes the first slot, and the third optical cross-connect subrack includes the second slot.

9. The method according to any one of claims 1 to 8, characterized in that, After determining the insertion loss measurement result between the first slot and the second slot based on the first power of the detection light detected by the first receiving unit and the second power of the detection light detected by the second receiving unit, the method further includes: In response to a measurement result query request sent by the network management server, the insertion loss measurement result is sent to the network management server.

10. A method for measuring insertion loss, characterized in that, Applied to a receiving unit, the receiving unit includes a first receiving unit and a second receiving unit; the first receiving unit is disposed in a first slot on a first optical board in the optical cross-connect system, and the second receiving unit is disposed in a second slot on a second optical board in the optical cross-connect system, including: Acquire the detection optical transmission information sent by the insertion loss measurement controller; Based on the detected optical transmission information, the target optical receiving port among multiple optical receiving ports is determined; The detection light is received through the target light receiving port; The first power of the detection light in the first slot is detected, and the second power of the detection light in the second slot is detected; The first power and the second power are sent to the insertion loss measurement controller, wherein the insertion loss measurement controller is used to determine the insertion loss measurement result between the first slot and the second slot based on the first power and the second power.

11. The method according to claim 10, characterized in that, Before acquiring the detection optical transmission information sent by the insertion loss measurement controller, the method further includes: In response to a band query request sent by the insertion loss measurement controller, the band information of the receiving unit is obtained; A band query response is sent to the insertion loss measurement controller, and the band query response includes the band information of the receiving unit.

12. A test controller for insertion loss measurement, characterized in that, The insertion loss measurement controller includes a processor and a memory, the memory storing programs or instructions that can run on the processor, the programs or instructions being executed by the processor to implement the steps of the method as described in any one of claims 1 to 11.

13. A receiving unit, characterized in that, The receiving unit includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method as described in any one of claims 1 to 11.

14. A system for measuring insertion loss, characterized in that, It includes an insertion loss measurement controller as described in any one of claims 1 to 9, a transmitting unit and a receiving unit as described in any one of claims 10 to 11, which are respectively communicatively connected to the insertion loss measurement controller. The transmitting unit includes multiple optical transmission ports, which are used to transmit detection light of different frequencies; The receiving unit includes an optical power detection device and multiple optical receiving ports. The optical power detection device is used to detect the power of the detection light in the slot where the receiving unit is located. The multiple optical receiving ports correspond to the multiple optical transmitting ports and are used to receive detection light of different frequencies.

15. An optical network device, characterized in that, The optical network device includes an optical cross-connect system and an insertion loss measurement system as described in claim 14; the optical cross-connect system includes a first optical board and a second optical board, a first receiving unit of the insertion loss measurement system is provided in a first slot on the first optical board, and a second receiving unit of the insertion loss measurement system is provided in a second slot on the second optical board.

16. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method as described in any one of claims 1 to 11.

17. A computer program product, characterized in that, The computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions that, when executed by a computer, cause the computer to perform the steps of the method as described in any one of claims 1 to 11.

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