APD performance detection method, device, optical network and medium for optical module

Abstract

The embodiment of the present invention discloses a method, device, optical network and medium for detecting the performance of an avalanche photodiode (APD) for an optical module. The APD performance detection method for an optical module is applicable to an optical network including an optical module and an optical network unit (ONU). The method comprises: selecting at least one optical network unit identifier (ONU ID) as a detection ONU ID; allocating bandwidth for the detection ONU ID and enabling the bandwidth; obtaining the received optical power of the optical module for the detection ONU ID; judging whether the performance of the APD in the optical module is degraded based on the received optical power, so that the degradation of the APD of the optical module can be detected in time, and the influence of the APD performance degradation on the normal operation of the optical network can be reduced.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of optical modules, and in particular to a method, device, optical network and medium for detecting the performance of an avalanche photodiode (APD) used in an optical module. Background Art

[0002] The industry has always believed that passive optical network (PON) is the future development direction of access network. On the one hand, it is widely favored in solving broadband access problems because the bandwidth it provides can meet the needs of various broadband services now and in the future; on the other hand, its cost is relatively low in terms of equipment cost and operation and maintenance management expenses. With the promotion of 5G technology, various APPs with high bandwidth requirements are emerging like mushrooms after rain, which puts higher requirements on the data forwarding of the central office equipment of optical line terminal (OLT), especially for long-distance communication. Therefore, optical modules with high transmission optical power and high receiving sensitivity are used on OLT to send and receive optical signals.

[0003] Usually, the receiving end of the optical module uses an avalanche photodiode to receive optical signals. When the APD performance in the optical module deteriorates, the sensitivity of the APD to receive optical signals decreases, resulting in an increase in the normal operating threshold of the optical network unit (ONU) that transmits optical signals to the optical module of the OLT, and even some or all ONUs are offline, which may also cause the ONU to go online repeatedly. Maintenance personnel cannot immediately discover that the APD performance of the optical module has deteriorated. Only when the user complains about network problems, maintenance personnel intervene to replace the faulty optical module and perform material failure analysis on the faulty optical module to determine whether the APD in the optical module has deteriorated. Therefore, how to promptly detect the degradation of the APD of the optical module and reduce the impact of the APD performance degradation on the normal operation of the optical network has become an urgent problem to be solved. Summary of the invention

[0004] The purpose of one or more embodiments of this specification is to provide an APD performance detection method, device, optical network and medium for an optical module, which can promptly detect the degradation of the APD of the optical module and reduce the impact of APD performance degradation on the normal operation of the optical network.

[0005] To solve the above technical problems, one or more embodiments of this specification are implemented as follows:

[0006] In a first aspect, a method for detecting the APD performance of an optical module is provided, which is applicable to an optical network including an optical module, and the method comprises: selecting at least one optical network unit identifier ONU ID as a detection ONU ID; allocating bandwidth for the detection ONU ID and enabling the bandwidth; obtaining the received optical power of the optical module for the detection ONU ID; and judging whether the performance of the APD in the optical module is degraded based on the received optical power.

[0007] In the second aspect, an APD performance detection device for an optical module is proposed, which is suitable for an optical network including an optical module, and the device includes: a selection module, used to select at least one optical network unit identifier ONU ID as a detection ONU ID; an allocation module, used to allocate bandwidth for the detection ONU ID and enable the bandwidth; an acquisition module, used to acquire the received optical power of the optical module for the detection ONU ID; and a judgment module, used to judge whether the performance of the APD in the optical module is degraded based on the received optical power.

[0008] In a third aspect, an optical network is proposed, wherein the optical network includes the APD performance detection device for an optical module as described above.

[0009] In a fourth aspect, a storage medium is proposed for computer-readable storage, wherein the storage medium stores one or more programs, and when the one or more programs can be executed by one or more processors, the steps of the APD performance detection method for optical modules as described above are implemented.

[0010] It can be seen from the technical solutions provided by one or more embodiments of the above specification that the APD performance detection method for optical modules provided by the embodiments of the present invention is applicable to an optical network including an optical module, and the optical module refers to an optical module of an OLT, and at least one optical network unit identifier ONU ID can be a real ONU ID, such as an ONU ID registered under the same PON port as the optical module, or a virtual ONU that does not exist, such as an ONU ID that is not registered under the PON port. If there is no physical object, as long as the OLT allocates an ONU ID. In order not to affect the normal operation of the optical network, the detected ONU ID can be an ONU ID that is not registered under the same PON port, and when the bandwidth is allocated for the detected ONU ID and the detection of the uplink time slot occupied by the detected ONU ID is enabled, the received optical power of the optical module for the detected ONU ID is obtained, and then the performance of the APD in the optical module is judged based on the received optical power whether it is degraded. It can be seen that the APD performance of the optical module can be detected in real time through the architecture of the optical network itself, and the operation is simple and convenient, and the optical module with APD performance degradation can be discovered and replaced in time, reducing the impact of APD performance degradation on the normal operation of the optical network. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the description of one or more embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 The figure is a schematic diagram of the steps of an APD performance detection method for an optical module provided by an embodiment of the present invention.

[0013] Figure 2 It is a schematic diagram of the steps of another APD performance detection method for an optical module provided by an embodiment of the present invention.

[0014] Figure 3 It is a schematic diagram of the steps of another APD performance detection method for an optical module provided by an embodiment of the present invention.

[0015] Figure 4 It is a schematic diagram of the steps of another APD performance detection method for an optical module provided by an embodiment of the present invention.

[0016] Figure 5 It is a schematic diagram of the steps of another APD performance detection method for an optical module provided by an embodiment of the present invention.

[0017] Figure 6 It is a schematic diagram of the steps of another APD performance detection method for an optical module provided by an embodiment of the present invention.

[0018] Figure 7 It is a schematic diagram of the steps of another APD performance detection method for an optical module provided by an embodiment of the present invention.

[0019] Figure 8 It is a structural schematic diagram of an APD performance detection device for an optical module provided by an embodiment of the present invention.

[0020] Fig. 9 It is a structural schematic diagram of another APD performance detection device for an optical module provided by an embodiment of the present invention.

[0021] Fig.10 It is a schematic diagram of the structure of an optical network provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below in conjunction with the drawings in one or more embodiments of this specification. Obviously, the one or more embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on one or more embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this document.

[0023] An APD performance detection method for an optical module provided in an embodiment of the present invention is applicable to an optical network including an optical module and an optical network unit ONU, and can detect the APD performance of the optical module in a timely manner, thereby avoiding failure of the optical network due to failure to timely detect the degradation of APD performance, affecting the normal use of users, and reducing the impact on the normal operation of the optical network. The APD performance detection method for an optical module provided in this specification and its various steps are described in detail below.

[0024] It should be noted that the optical network used in the APD performance detection method for optical modules provided in the embodiment of the present invention can be a passive optical network PON, the optical module refers to the optical module of the OLT, the ONU ID can be an ONU ID registered under the same PON port, it can also be an ONU ID not registered under the same PON port, it can also be a non-real virtual unit that only needs the OLT to allocate an ONU ID, and the optical module can use an avalanche photodiode to receive the optical signal sent by the ONU ID.

[0025] Embodiment 1

[0026] Reference Figure 1 As shown, it is a schematic diagram of the steps of an APD performance detection method for an optical module provided by an embodiment of the present invention. It can be understood that the APD performance detection method for an optical module provided by an embodiment of the present invention is applicable to an optical network including an optical module, and the APD performance of the optical module is detected by detecting the ONU ID, which is simple and convenient to operate. The APD performance detection method for an optical module includes the following steps:

[0027] Step 10: Select at least one ONU ID as the detection ONU ID;

[0028] The existing ONU in the optical network can perform optical communication with the optical module of the OLT. For example, the number of ONUs in the PON can be multiple, while the optical module in the optical line terminal OLT can be one. The existing ONU in the optical network is selected as the detection ONUID, and one or more ONUs can be selected as the detection ONU ID. For the sake of simplicity of detection, the optical module can be used to detect the access optical power of one detection ONU ID in the same time period of each detection. The optical module can be used to detect the access optical power of multiple detection ONU IDs in different time periods, which can improve the accuracy of the APD performance detection result of the optical module.

[0029] Detecting the ONU ID is a tool for detecting the APD performance of the optical module. The step of judging whether the APD performance is deteriorated only requires simple logical judgment, and the detection operation is simple.

[0030] For the sake of simplicity, at least one ONU ID is selected as the principle for detecting the ONU ID. The selection principle may be to select any ONU that has been used or not registered under the PON port, or to select a virtual unit that does not really exist and to which the OLT can assign an ONU ID.

[0031] Step 20: Allocate bandwidth for the detected ONU ID and enable the bandwidth;

[0032] Configure the corresponding transmission container T-CONT for the detection ONU ID. The ALLOC ID of T-CONT is also unused under the same PON port. Then, based on T-CONT, allocate the corresponding bandwidth for the detection ONU ID and enable the bandwidth. The detection ONUID occupies the uplink time slot for the subsequent detection. For example, the OLT sends a trigger signal to the optical module, and the optical module obtains the received optical power of the corresponding detection ONU ID. Based on the access optical power, it is determined whether the APD performance of the optical module has degraded.

[0033] Step 30: Obtain the received optical power of the optical module for detecting the ONU ID;

[0034] Dark current exists in the normal operation of optical modules in optical networks. The dark current detection optical module can be used to detect the received optical power of the ONU ID to identify whether the performance of the APD in the optical module is degraded. In particular, when the APD performance of the optical module is degraded, the resistance will increase, the current will decrease, and the received optical power of the optical module will change accordingly.

[0035] The received optical power may be obtained by other devices, or the received optical power may be obtained by the optical module and sent to the OLT, and the OLT completes the subsequent step of determining whether the APD performance is degraded.

[0036] Step 40: Determine whether the performance of the APD in the optical module is degraded based on the received optical power.

[0037] Of course, the step of judging whether the APD performance is degraded can be completed in the optical module. For the optical module with APD performance degradation, an alarm or other warning can be generated. In order to avoid improving the optical module, judging whether the performance of the APD in the optical module is degraded based on the received optical power can also be completed in the OLT, which is not limited here.

[0038] The judgment criteria can be based on the standards for APD performance degradation in the industry optical module specification.

[0039] The APD performance detection method for optical modules provided in the embodiment of the present invention starts the APD performance detection operation of the optical module manually when an abnormality occurs in the optical network. The disadvantage is that the problem is discovered late, but the advantage is that it does not occupy optical network resources. The detection method can also automatically start to perform real-time detection when the optical network is operating normally, and can timely alarm when the optical module with APD performance degradation is found, so that timely discovery and timely resolution can be achieved. The disadvantage is that some optical network resources need to be occupied. In practical applications, corresponding configurations can be made according to different detection requirements.

[0040] Reference Figure 2 As shown, in some embodiments, before step 20: obtaining the received optical power of the optical module for detecting the ONU ID, the APD performance detection method provided by the embodiment of the present invention further includes:

[0041] Step 40: trigger the optical module to obtain the received optical power for detecting the ONU ID.

[0042] The optical module in the optical network does not need to obtain the received optical power for detecting the ONU ID when performing normal operation. Therefore, before obtaining the received optical power of the optical module for detecting the ONU ID, the OLT sends a trigger trig signal to trigger the optical module itself to obtain the received optical power for detecting the ONU ID. Therefore, there is no need to use other devices to obtain the received optical power of the optical module for detecting the ONU ID.

[0043] Reference Figure 3 As shown, in some embodiments, the APD performance detection method provided by the embodiment of the present invention, step 30: judging whether the performance of the APD in the optical module is degraded based on the received optical power, specifically includes:

[0044] Step 300: If the received optical power is within a preset first threshold range, it is determined that the performance of the APD of the optical module is degraded;

[0045] After obtaining the received optical power of the optical module for detecting the ONU ID, it is determined whether the APD performance in the optical module is degraded based on the received optical power. The preset first threshold range is greater than or equal to -35dBm and less than or equal to -5 dBm. If the received optical power falls within the preset first threshold range, it is determined that the APD performance of the optical module is degraded.

[0046] The preset first threshold range can be set according to the standards mentioned in the industry optical module specification.

[0047] Reference Figure 4 As shown, in some embodiments, the APD performance detection method provided by the embodiment of the present invention, step 30: judging whether the performance of the APD in the optical module is degraded based on the received optical power, specifically includes:

[0048] Step 310: If the received optical power is within a preset second threshold range, it is determined that the performance of the APD of the optical module is not degraded.

[0049] The preset second threshold range is less than -35 dBm. If the received optical power falls within the preset second threshold range, it is determined that the APD performance of the optical module has not been degraded.

[0050] Likewise, the preset second threshold range may be set according to the standards and actual applications mentioned in the industry optical module specification.

[0051] Reference Figure 5 As shown, in some embodiments, the APD performance detection method provided by the embodiment of the present invention, at least one ONU ID includes a vacant first ONU ID, step 10: selecting at least one ONU ID as the detection ONU ID, specifically including:

[0052] Step 100: Select a detection ONU ID from the first ONU ID;

[0053] The first ONU ID is a vacant ONU ID, which is neither registered nor started in the optical network. If at least one ONU ID is selected from the first ONU ID as the detection ONU ID, corresponding bandwidth configuration and bandwidth enabling need to be performed on the detection ONU ID.

[0054] Find out an unused ONU ID. For example, if the number of registered ONU IDs under the same PON port is 50, but the PON port can register 128, then at least one of the 78 vacant ONU IDs can be used as the detection ONU ID.

[0055] The advantage of selecting at least one of the vacant first ONU IDs as the detection ONU ID is that the entire detection process will not affect the normal operation of the optical network, so the vacant first ONU is preferably selected as the detection ONU ID.

[0056] The following is a detailed description of the steps of the APD performance detection method for an optical module provided by an embodiment of the present invention as an example.

[0057] 1.1 Select an unused ONU ID

[0058] Assuming that the same PON port supports registration of 128 ONU IDs, 64 of which have been used, one of the 64 unused ONU IDs is randomly selected as the detection ONU ID.

[0059] 1.2 Allocate unused T-CONT to the detection ONU ID, allocate bandwidth and enable bandwidth;

[0060] Assign an unused ALLOC ID to the detection ONU ID and allocate bandwidth. It is recommended to use the default ALLOC ID that is the same as the detection ONU ID, or use other service ALLOC IDs.

[0061] 1.3 Sending a trigger signal

[0062] The OLT sends a trigger signal of receiving optical power to the optical module, so that the optical module obtains the receiving optical power for detecting the ONU ID.

[0063] 1.4 Obtaining the optical module receiving optical power data

[0064] The optical module calculates the received optical power value for detecting the ONU ID from the optical module received optical power register.

[0065] 1.5 Comparison and judgment of received optical power values

[0066] The received optical power value is compared with a preset first threshold range and a preset second threshold range respectively.

[0067] 1.6 Determine whether the APD of the optical module is degraded

[0068] When the received optical power value falls within the preset first threshold range, it is considered that the APD performance of the optical module has degraded; when the received optical power value falls within the preset second threshold range, it is considered that the APD performance of the optical module has not degraded.

[0069] Reference Figure 6As shown, in some embodiments, the APD performance detection method provided by the embodiment of the present invention, the optical network also includes a used second ONU ID, step 10: selecting at least one ONU ID as the detection ONU ID, specifically including:

[0070] Step 120: Select a detection ONU ID from the second ONU ID;

[0071] At least one ONU ID is selected from the ONU IDs already used in the optical network as the detection ONU ID. The detection ONU ID works normally as an optical network unit before detection. Therefore, if this type of detection ONU ID is used for detection, it will have an impact on the optical network. However, the impact of the detection time period on the optical network is also very small.

[0072] For example, if the number of registered ONU IDs under the same PON port is 50, one of the 50 ONU IDs is selected as the detection ONU ID to detect whether the APD performance of the optical module is degraded.

[0073] Step 130: Turn off the upstream optical signal for detecting the ONU ID;

[0074] The OLT sends a shutdown command to the detection ONU ID, such as the disable serial number in the PLOAM message is disabled, so that the upstream optical signal of the detection ONU ID is turned off.

[0075] Normally allocate bandwidth and enable the T-CONT of the detected ONU ID, send a trigger signal to the optical module, and the optical module obtains the received optical power corresponding to the detected ONU ID according to the trigger signal, and determines whether the APD of the optical module is degraded according to the received optical power. After the detection is completed, a PLOAM message is sent to the detected ONU ID, and the disable serialnumber status in the PLOAM message is enable, and the sending laser of the detected ONU ID is restored to send the upstream optical signal.

[0076] The following is a detailed description of the steps of the APD performance detection method for an optical module provided by an embodiment of the present invention as another example.

[0077] Use the ONU ID already used in the optical network

[0078] 1.1 Select an ONU ID currently in use in the optical network as the detection ONU ID

[0079] Assuming that the same PON port supports registration of 128 ONU IDs, and 64 ONU IDs have been registered and used, an ONU ID is randomly selected from the 64 ONU IDs as the detection ONU ID.

[0080] 1.2 Turn off the ONU ID sending laser

[0081] The OLT sends a PLOAM message to detect the ONU ID. The disable serial number status in the PLOAM message is disable, so that the sending laser of the ONU ID detection no longer sends the upstream optical signal.

[0082] 1.3 Allocate bandwidth to the ONU ID and enable bandwidth

[0083] Allocate effective bandwidth to one of the ALLOC IDs of the detection ONU ID (it is recommended to use the default ALLOC ID, which is the same as the number of the detection ONU). You can also use other service ALLOC IDs to allocate bandwidth and enable the bandwidth.

[0084] 1.4 Sending a trigger signal

[0085] The OLT sends a trigger signal to the optical module, so that the optical module starts to obtain the received optical power of the optical module for detecting the ONU ID.

[0086] 1.5 Obtaining the received optical power of an optical module

[0087] The optical module calculates the received optical power value for detecting the ONU ID from the optical module received optical power register.

[0088] 1.5 Comparison and judgment of received optical power values

[0089] The received optical power value is compared with a preset first threshold range and a preset second threshold range respectively.

[0090] 1.6 Determine whether the APD of the optical module is degraded

[0091] When the received optical power value falls within the preset first threshold range, it is considered that the APD performance of the optical module has degraded; when the received optical power value falls within the preset second threshold range, it is considered that the APD performance of the optical module has not degraded.

[0092] Reference Figure 7 As shown, in some embodiments, when the ONU ID is selected for detection in the second ONU, after step 30: judging whether the performance of the APD in the optical module is deteriorated based on the received optical power, the APD performance detection method provided by the embodiment of the present invention further includes:

[0093] Step 50: Restore and detect the upstream optical signal of the ONU ID.

[0094] The OLT turns on the transmitting laser for detecting the ONU ID and restores the upstream optical signal for detecting the ONU ID, so that the ONU can work normally in the optical network. For example, the OLT sends a PLOAM message, in which the disable serial number status in the PLOAM message is enable, so that the transmitting laser for detecting the ONU ID can light up and resume normal operation.

[0095] It can be seen that OLT, as the control end, can send various control instructions, and can also analyze the step of judging whether the APD performance is deteriorated on the OLT to obtain the test results. Therefore, there is almost no improvement on the optical module, and only minor improvements are made at the software level. However, it can achieve early detection and early resolution of the deterioration of the APD performance of the optical module, avoiding problems with the overall optical network and causing user complaints and other adverse effects.

[0096] It can be seen from the above analysis that the APD performance detection method for optical modules provided in the embodiment of the present invention is applicable to an optical network including an optical module, and the optical module refers to an optical module of an OLT, and at least one optical network unit identifier ONU ID can be a real ONU ID, such as an ONU ID registered under the same PON port as the optical module, or a virtual ONU that does not exist, such as an ONU ID that is not registered under the PON port. If there is no physical object, as long as the OLT allocates an ONU ID, it will be sufficient. In order not to affect the normal operation of the optical network, the detected ONU ID can be an ONU ID that is not registered under the same PON port, and when the detection of the uplink time slot occupied by the detection ONU ID is detected after the bandwidth is allocated to the detection ONU ID and the detection ONU ID is enabled, the performance of the APD in the optical module is judged to be degraded based on the received optical power after obtaining the received optical power of the optical module for the detection ONU ID. It can be seen that the APD performance of the optical module can be detected in real time through the architecture of the optical network itself, and the operation is simple and convenient, and the optical module with APD performance degradation can be found and replaced in time, reducing the impact of APD performance degradation on the normal operation of the optical network.

[0097] Embodiment 2

[0098] Reference Figure 7 As shown, an APD performance detection device 10 for an optical module provided by an embodiment of the present invention is applicable to an optical network including an optical module, and the device includes: a selection module 100, an allocation module 110, an acquisition module 120 and a judgment module 130. Among them:

[0099] A selection module 100 is used to select at least one ONU ID as a detection ONU ID;

[0100] The existing ONU in the optical network can perform optical communication with the optical module of the OLT. For example, the number of ONUs in the PON can be multiple, while the optical module in the optical line terminal OLT can be one. The existing ONU in the optical network is selected as the detection ONUID, and one or more ONUs can be selected as the detection ONU ID. For the sake of simplicity of detection, the optical module can be used to detect the access optical power of one detection ONU ID in the same time period of each detection. The optical module can be used to detect the access optical power of multiple detection ONU IDs in different time periods, which can improve the accuracy of the APD performance detection result of the optical module.

[0101] Detecting ONU ID is a detection tool for detecting the APD performance of the optical module. There is no need to build a new detection device. The judgment step of whether the APD performance is deteriorated can be completed on the OLT side with simple logical judgment, and the detection operation is simple.

[0102] For simplicity, the principle of selecting at least one ONU from the ONUs as the detection ONU ID may be to arbitrarily select a used or vacant ONU that has been registered under the PON port, thereby eliminating the process of connecting a new ONU to the optical network.

[0103] An allocation module 110, configured to allocate bandwidth to the detected ONU ID and enable the bandwidth;

[0104] Configure the corresponding transmission container T-CONT for the detection ONU ID. The ALLOC ID of T-CONT is also unused under the same PON port. Then, based on T-CONT, allocate the corresponding bandwidth for the detection ONU ID and enable the bandwidth. The detection ONUID occupies the uplink time slot for the subsequent detection. For example, the OLT sends a trigger signal to the optical module, and the optical module obtains the received optical power of the corresponding detection ONU ID. Based on the access optical power, it is determined whether the APD performance of the optical module has degraded.

[0105] An acquisition module 120 is used to acquire the received optical power of the optical module for detecting the ONU ID;

[0106] Dark current exists in the normal operation of optical modules in optical networks. The dark current detection optical module can be used to detect the received optical power of the ONU ID to identify whether the performance of the APD in the optical module is degraded. In particular, when the APD performance of the optical module is degraded, the resistance will increase, the current will decrease, and the received optical power of the optical module will change accordingly.

[0107] The received optical power may be obtained by other devices, or the received optical power may be obtained by the optical module and sent to the OLT, and the OLT completes the subsequent step of determining whether the APD performance is degraded.

[0108] The judging module 130 is configured to judge whether the performance of the APD in the optical module is degraded based on the received optical power.

[0109] Of course, the step of judging whether the APD performance is degraded can be completed in the optical module. For the optical module with APD performance degradation, an alarm or other warning can be generated. In order to avoid improving the optical module, judging whether the performance of the APD in the optical module is degraded based on the received optical power can also be completed in the OLT, which is not limited here.

[0110] The judgment criteria can be based on the standards for APD performance degradation in the industry optical module specification.

[0111] The APD performance detection method for optical modules provided in the embodiment of the present invention starts the APD performance detection operation of the optical module manually when an abnormality occurs in the optical network. The disadvantage is that the problem is discovered late, but the advantage is that it does not occupy optical network resources. The detection method can also automatically start to perform real-time detection when the optical network is operating normally, and can timely alarm when the optical module with APD performance degradation is found, so that timely discovery and timely resolution can be achieved. The disadvantage is that some optical network resources need to be occupied. In practical applications, corresponding configurations can be made according to different detection requirements.

[0112] Reference Figure 8 As shown, the APD performance detection device provided by the embodiment of the present invention further includes a trigger module 140, and the trigger module 140 is used to:

[0113] Before obtaining the received optical power of the optical module for detecting the ONU ID, the optical module is triggered to obtain the received optical power for detecting the ONUID.

[0114] The optical module in the optical network does not need to obtain the received optical power for detecting the ONU ID when performing normal work. Therefore, before obtaining the received optical power of the optical module for detecting the ONU ID, the OLT sends a trigger trig signal to trigger the optical module itself to obtain the received optical power for detecting the ONU ID. Therefore, there is no need to use other devices to obtain the received optical power of the optical module for detecting the ONU ID. The detection device is simple and completely made of components in the optical network.

[0115] It can be seen from the above analysis that the APD performance detection method for optical modules provided in the embodiment of the present invention is applicable to an optical network including an optical module, and the optical module refers to an optical module of an OLT, and at least one optical network unit identifier ONU ID can be a real ONU ID, such as an ONU ID registered under the same PON port as the optical module, or a virtual ONU that does not exist, such as an ONU ID that is not registered under the PON port. If there is no physical object, as long as the OLT allocates an ONU ID, it will be sufficient. In order not to affect the normal operation of the optical network, the detected ONU ID can be an ONU ID that is not registered under the same PON port, and when the detection of the uplink time slot occupied by the detection ONU ID is detected after the bandwidth is allocated to the detection ONU ID and the detection ONU ID is enabled, the performance of the APD in the optical module is judged to be degraded based on the received optical power after obtaining the received optical power of the optical module for the detection ONU ID. It can be seen that the APD performance of the optical module can be detected in real time through the architecture of the optical network itself, and the operation is simple and convenient, and the optical module with APD performance degradation can be found and replaced in time, reducing the impact of APD performance degradation on the normal operation of the optical network.

[0116] Embodiment 3

[0117] See also Fig. 9 As shown, an optical network 1 provided by an embodiment of the present invention includes an APD performance detection device 10 for an optical module as described above. The APD performance detection device 10 for an optical module includes: a selection module 100, an allocation module 110, an acquisition module 120 and a judgment module 130. Among them:

[0118] A selection module 100 is used to select at least one ONU ID as a detection ONU ID;

[0119] The existing ONU in the optical network can perform optical communication with the optical module of the OLT. For example, the number of ONUs in the PON can be multiple, while the optical module in the optical line terminal OLT can be one. The existing ONU in the optical network is selected as the detection ONUID, and one or more ONUs can be selected as the detection ONU ID. For the sake of simplicity of detection, the optical module can be used to detect the access optical power of one detection ONU ID in the same time period of each detection. The optical module can be used to detect the access optical power of multiple detection ONU IDs in different time periods, which can improve the accuracy of the APD performance detection result of the optical module.

[0120] Detecting ONU ID is a detection tool for detecting the APD performance of the optical module. There is no need to build a new detection device. The judgment step of whether the APD performance is deteriorated can be completed on the OLT side with simple logical judgment, and the detection operation is simple.

[0121] For simplicity, the principle of selecting at least one ONU from the ONUs as the detection ONU ID may be to arbitrarily select a used or vacant ONU that has been registered under the PON port, thereby eliminating the process of connecting a new ONU to the optical network.

[0122] An allocation module 110, configured to allocate bandwidth to the detected ONU ID and enable the bandwidth;

[0123] Configure the corresponding transmission container T-CONT for the detection ONU ID. The ALLOC ID of T-CONT is also unused under the same PON port. Then, based on T-CONT, allocate the corresponding bandwidth for the detection ONU ID and enable the bandwidth. The detection ONUID occupies the uplink time slot for the subsequent detection. For example, the OLT sends a trigger signal to the optical module, and the optical module obtains the received optical power of the corresponding detection ONU ID. Based on the access optical power, it is determined whether the APD performance of the optical module has degraded.

[0124] An acquisition module 120 is used to acquire the received optical power of the optical module for detecting the ONU ID;

[0125] Dark current exists in the normal operation of optical modules in optical networks. The dark current detection optical module can be used to detect the received optical power of the ONU ID to identify whether the performance of the APD in the optical module is degraded. In particular, when the APD performance of the optical module is degraded, the resistance will increase, the current will decrease, and the received optical power of the optical module will change accordingly.

[0126] The received optical power may be obtained by other devices, or the received optical power may be obtained by the optical module and sent to the OLT, and the OLT completes the subsequent step of determining whether the APD performance is degraded.

[0127] The judging module 130 is configured to judge whether the performance of the APD in the optical module is degraded based on the received optical power.

[0128] Of course, the step of judging whether the APD performance is degraded can be completed in the optical module. For the optical module with APD performance degradation, an alarm or other warning can be generated. In order to avoid improving the optical module, judging whether the performance of the APD in the optical module is degraded based on the received optical power can also be completed in the OLT, which is not limited here.

[0129] The judgment criteria can be based on the standards for APD performance degradation in the industry optical module specification.

[0130] The APD performance detection method for optical modules provided in the embodiment of the present invention starts the APD performance detection operation of the optical module manually when an abnormality occurs in the optical network. The disadvantage is that the problem is discovered late, but the advantage is that it does not occupy optical network resources. The detection method can also automatically start to perform real-time detection when the optical network is operating normally, and can timely alarm when the optical module with APD performance degradation is found, so that timely discovery and timely resolution can be achieved. The disadvantage is that some optical network resources need to be occupied. In practical applications, corresponding configurations can be made according to different detection requirements.

[0131] It can be seen from the above analysis that the APD performance detection method for optical modules provided in the embodiment of the present invention is applicable to an optical network including an optical module, and the optical module refers to an optical module of an OLT, and at least one optical network unit identifier ONU ID can be a real ONU ID, such as an ONU ID registered under the same PON port as the optical module, or a virtual ONU that does not exist, such as an ONU ID that is not registered under the PON port. If there is no physical object, as long as the OLT allocates an ONU ID, it will be sufficient. In order not to affect the normal operation of the optical network, the detected ONU ID can be an ONU ID that is not registered under the same PON port, and when the detection of the uplink time slot occupied by the detection ONU ID is detected after the bandwidth is allocated to the detection ONU ID and the detection ONU ID is enabled, the performance of the APD in the optical module is judged to be degraded based on the received optical power after obtaining the received optical power of the optical module for the detection ONU ID. It can be seen that the APD performance of the optical module can be detected in real time through the architecture of the optical network itself, and the operation is simple and convenient, and the optical module with APD performance degradation can be found and replaced in time, reducing the impact of APD performance degradation on the normal operation of the optical network.

[0132] Embodiment 4

[0133] An embodiment of the present invention provides a storage medium for computer-readable storage, wherein the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the following Figures 1 to 7 The steps of the APD performance detection method for an optical module shown in the figure can specifically be performed as follows:

[0134] Step 10: Select at least one ONU ID as the detection ONU ID;

[0135] The existing ONU in the optical network can perform optical communication with the optical module of the OLT. For example, the number of ONUs in the PON can be multiple, while the optical module in the optical line terminal OLT can be one. The existing ONU in the optical network is selected as the detection ONUID, and one or more ONUs can be selected as the detection ONU ID. For the sake of simplicity of detection, the optical module can be used to detect the access optical power of one detection ONU ID in the same time period of each detection. The optical module can be used to detect the access optical power of multiple detection ONU IDs in different time periods, which can improve the accuracy of the APD performance detection result of the optical module.

[0136] Detecting the ONU ID is a tool for detecting the APD performance of the optical module. The step of judging whether the APD performance is deteriorated only requires simple logical judgment, and the detection operation is simple.

[0137] For the sake of simplicity, at least one ONU ID is selected as the selection principle for detecting the ONU ID. The selection principle may be to arbitrarily select an already used ONU registered under the PON port or an unregistered vacant ONU under the PON port, or a virtual unit that does not really exist and only provides the ONU ID.

[0138] Step 20: Allocate bandwidth for the detected ONU ID and enable the bandwidth;

[0139] Configure the corresponding transmission container T-CONT for the detection ONU ID. The ALLOC ID of T-CONT is also unused under the same PON port. Then, based on T-CONT, allocate the corresponding bandwidth for the detection ONU ID and enable the bandwidth. The detection ONUID occupies the uplink time slot for the subsequent detection. For example, the OLT sends a trigger signal to the optical module, and the optical module obtains the received optical power of the corresponding detection ONU ID. Based on the access optical power, it is determined whether the APD performance of the optical module has degraded.

[0140] Step 30: Obtain the received optical power of the optical module for detecting the ONU ID;

[0141] Dark current exists in the normal operation of optical modules in optical networks. The dark current detection optical module can be used to detect the received optical power of the ONU ID to identify whether the performance of the APD in the optical module is degraded. In particular, when the APD performance of the optical module is degraded, the resistance will increase, the current will decrease, and the received optical power of the optical module will change accordingly.

[0142] The received optical power may be obtained by other devices, or the received optical power may be obtained by the optical module and sent to the OLT, and the OLT completes the subsequent step of determining whether the APD performance is degraded.

[0143] Step 40: Determine whether the performance of the APD in the optical module is degraded based on the received optical power.

[0144] Of course, the step of judging whether the APD performance is degraded can be completed in the optical module. For the optical module with APD performance degradation, an alarm or other warning can be generated. In order to avoid improving the optical module, judging whether the performance of the APD in the optical module is degraded based on the received optical power can also be completed in the OLT, which is not limited here.

[0145] The judgment criteria can be based on the standards for APD performance degradation in the industry optical module specification.

[0146] The APD performance detection method for optical modules provided in the embodiment of the present invention starts the APD performance detection operation of the optical module manually when an abnormality occurs in the optical network. The disadvantage is that the problem is discovered late, but the advantage is that it does not occupy optical network resources. The detection method can also automatically start to perform real-time detection when the optical network is operating normally, and can timely alarm when the optical module with APD performance degradation is found, so that timely discovery and timely resolution can be achieved. The disadvantage is that some optical network resources need to be occupied. In practical applications, corresponding configurations can be made according to different detection requirements.

[0147] It can be seen from the above analysis that the APD performance detection method for optical modules provided in the embodiment of the present invention is applicable to an optical network including an optical module, and the optical module refers to an optical module of an OLT, and at least one optical network unit identifier ONU ID can be a real ONU ID, such as an ONU ID registered under the same PON port as the optical module, or a virtual ONU that does not exist, such as an ONU ID that is not registered under the PON port. If there is no physical object, as long as the OLT allocates an ONU ID, it will be sufficient. In order not to affect the normal operation of the optical network, the detected ONU ID can be an ONU ID that is not registered under the same PON port, and when the detection of the uplink time slot occupied by the detection ONU ID is detected after the bandwidth is allocated to the detection ONU ID and the detection ONU ID is enabled, the performance of the APD in the optical module is judged to be degraded based on the received optical power after obtaining the received optical power of the optical module for the detection ONU ID. It can be seen that the APD performance of the optical module can be detected in real time through the architecture of the optical network itself, and the operation is simple and convenient, and the optical module with APD performance degradation can be found and replaced in time, reducing the impact of APD performance degradation on the normal operation of the optical network.

[0148] In short, the above description is only a preferred embodiment of this specification and is not intended to limit the protection scope of this specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification shall be included in the protection scope of this specification.

[0149] The systems, devices, modules or units described in one or more of the above embodiments may be implemented by a computer chip or entity, or by a product having a certain function. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0150] Computer-readable storage media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0151] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0152] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0153] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. A method for detecting the APD performance of an optical module, applicable to an optical network including the optical module, the method comprising: Select at least one optical network unit identifier ONU ID as a detection ONU ID, wherein at least one of the ONU IDs includes at least one of the following: a virtual ONU ID, a vacant first ONU ID, and a used second ONU ID; Allocating bandwidth for the detection ONU ID and enabling the bandwidth; Obtaining the received optical power of the optical module for the detected ONU ID, where the optical module is an optical module of an optical line terminal OLT; Determining whether the performance of the APD in the optical module is degraded based on the received optical power; The determining whether the performance of the APD in the optical module is degraded based on the received optical power specifically includes: If the received optical power is within a preset first threshold range, it is determined that the performance of the APD of the optical module is degraded; or, If the received optical power is within a preset second threshold range, it is determined that the performance of the APD of the optical module is not degraded; In the case where the detection ONU ID is the used second ONU ID, before allocating bandwidth for the detection ONU ID and enabling the bandwidth, the method further includes: selecting the detection ONU ID from the second ONU ID; and shutting down the uplink optical signal of the detection ONU ID.

2. The APD performance detection method according to claim 1, before obtaining the received optical power of the optical module for the detected ONU ID, the method further comprises: The optical module is triggered to obtain the received optical power for the detected ONU ID.

3. The APD performance detection method according to any one of claims 1 to 2, wherein the at least one ONU ID includes a vacant first ONU ID, and selecting at least one ONU ID as the detection ONU ID specifically comprises: The detection ONU ID is selected from the first ONU IDs.

4. The APD performance detection method according to claim 1 or 2, wherein when the detection ONUID is selected from the second ONU ID, after determining whether the performance of the APD in the optical module is degraded based on the received optical power, the method further comprises: The upstream optical signal for detecting the ONU ID is restored.

5. An APD performance detection device for an optical module, suitable for an optical network including an optical module, the device comprising: A selection module is used to select at least one optical network unit identification ONU ID as a detection ONU ID, wherein at least one of the ONU IDs includes at least one of the following: a virtual ONU ID, a vacant first ONU ID, and a used second ONU ID; An allocation module is used to allocate bandwidth for the detection ONU ID and enable the bandwidth; An acquisition module is used to acquire the received optical power of the optical module for the detected ONU ID; The optical module is an optical module of an optical line terminal OLT; A judging module, configured to judge whether the performance of the APD in the optical module is degraded based on the received optical power; The judgment module is specifically configured to determine that the performance of the APD of the optical module is degraded if the received optical power is within a preset first threshold range; Alternatively, if the received optical power is within a preset second threshold range, it is determined that the performance of the APD of the optical module is not degraded; When the detection ONU ID is the used second ONU ID, the device is further used to: select the detection ONU ID from the second ONU IDs before the detection ONU ID allocates bandwidth and the bandwidth is enabled; and turn off the uplink optical signal of the detection ONU ID.

6. The APD performance detection device according to claim 5, further comprising a trigger module for: Before obtaining the received optical power of the optical module for the detected ONU ID, the optical module is triggered to obtain the received optical power for the detected ONU ID.

7. An optical network, comprising the APD performance detection device for an optical module according to claim 5 or 6.

8. A storage medium for computer-readable storage, wherein the storage medium stores one or more programs, and when the one or more programs can be executed by one or more processors, the steps of the APD performance detection method for an optical module as described in any one of claims 1 to 4 are implemented.

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