WO2014005259A1 - Terminal de ligne optique, module émetteur-récepteur optique, système et procédé de détection de fibre - Google Patents

Terminal de ligne optique, module émetteur-récepteur optique, système et procédé de détection de fibre Download PDF

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Publication number
WO2014005259A1
WO2014005259A1 PCT/CN2012/078026 CN2012078026W WO2014005259A1 WO 2014005259 A1 WO2014005259 A1 WO 2014005259A1 CN 2012078026 W CN2012078026 W CN 2012078026W WO 2014005259 A1 WO2014005259 A1 WO 2014005259A1
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WIPO (PCT)
Prior art keywords
interface
otdr
processor
optical
test
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Ceased
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PCT/CN2012/078026
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English (en)
Chinese (zh)
Inventor
殷锦蓉
杨素林
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201610931545.3A priority Critical patent/CN106506069B/zh
Priority to CN201280001146.7A priority patent/CN104205676B/zh
Priority to PCT/CN2012/078026 priority patent/WO2014005259A1/fr
Publication of WO2014005259A1 publication Critical patent/WO2014005259A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking
    • H04B10/272—Star-type networks or tree-type networks

Definitions

  • the present application relates to optical communication technologies, and in particular, to an optical line terminal, an optical transceiver module, a system, and an optical fiber detection method.
  • a passive optical network system includes an optical line terminal (OLT) at a central office, a plurality of optical network units (0NU) on the user side, and a terminal for optical lines.
  • An optical distribution network (ODN) that branches/couples or multiplexes/demultiplexes optical signals between optical network units.
  • the optical line terminal and the optical network unit perform uplink and downlink data transmission and reception through an optical transceiver module (or a data receiving and receiving module) disposed therein.
  • the industry proposes to integrate the 0TDR test function into the optical transceiver module to realize the integrated 0TDR (also known as E0TDR).
  • the 0TDR test signal reuses the uplink data receiver such that the test signal and the uplink data signal use the same wavelength, and the data signal and the 0TDR test signal need to be time-multiplexed with the uplink data receiver.
  • 0NU when performing 0TDR test, 0NU must stop transmitting uplink data, and 0NU whether to send data is controlled by 0LT MAC module, 0LT MAC module is 0TDR test open test window, and notify optical transceiver module to perform 0TDR test, and The test empty window is usually in the order of microseconds, so the MAC module of the 0LT must notify the optical transceiver module to perform the 0TDR test through the hardware interface.
  • the existing solution is to implement the 0TDR test by modifying the function of the pin of the original optical transceiver module, for example, modifying the grounding pin to 0TDR
  • the enable signal is sent to complete the test of the 0TDR signal.
  • the definition of the pin of the modified optical transceiver module has been inconsistent with the standard, so that the optical transceiver module that supports the 0TDR test function must be used with the board supporting the 0TDR function, and needs to be replaced by the existing optical network system.
  • the original optical transceiver module can realize the 0TDR test function, which leads to a change to the existing network architecture, and the smooth upgrade of the 0TDR optical transceiver module cannot be realized. Summary of the invention
  • an optical line terminal comprising: a single board of an optical line terminal and an optical transceiver module, wherein an 0TDR controller and a received signal strength indicator (RSI) controller are disposed at the optical line terminal
  • the 0TDR processor and the RSSI processor are disposed in the optical transceiver module;
  • the I2C interface of the RSSI controller is connected to the I2C interface of the RSSI processor through an I2C bus;
  • the 0TDR controller passes the RSSI An I2C bus between an I2C interface of the controller and an I2C interface of the RSSI processor is coupled to an I2C interface of the 0TDR processor;
  • the 0TDR processor is configured to receive the first control command through its own I2C interface, open its own interface, and trigger the 0TDR test.
  • the 0TDR processor is configured to receive, by using its own I2C interface, a first control command sent by the 0TDR controller on the optical line terminal board through the I2C interface between the I2C interface of the optical line terminal and the I2C interface of the RSSI processor, Open its own interface, trigger the 0TDR test and receive the test;
  • the RSSI processor is configured to receive, by using its own I2C interface, a first control sent by an OTDR controller on the optical line terminal board through an I2C bus between the I2C interface of the optical line terminal and the I2C interface of the RSSI processor. Command, close its own interface, stop transmitting and receiving data signals.
  • An optical line terminal includes a data processing module and an optical transceiver module, wherein the optical transceiver module adopts an optical transceiver module as described above, and the data processing module And configured to provide the first data signal to the optical transceiver module for transmitting, and perform data processing on the optical data transceiver module in combination with the received second data signal, and the data processing module is further configured to use the light according to the light The first reflected signal and the second reflected signal received by the transceiver module analyze the optical fiber line.
  • a passive optical network system comprising: any optical line terminal optical line terminal according to any one of claims 1-4; a plurality of optical network units and an optical distribution network, wherein said optical line terminal passes said optical distribution A network is connected to the plurality of optical network units.
  • An optical fiber detecting method is applied to a passive optical network, where the passive optical network includes: a single board of an optical line terminal and an optical transceiver module, wherein the 0TDR controller and the RSSI controller are disposed at the optical line terminal On the board, the 0TDR processor and the RSSI processor are disposed in the optical transceiver module, and the OTDR controller processes the I2C bus between the I2C interface of the RSSI controller and the I2C interface of the RSSI processor with the 0TDR
  • the I2C interface of the device is connected, and the testing method includes:
  • the 0TDR controller Before performing the 0TDR test, the 0TDR controller sends the first control command to the RSSI processor and the 0TDR processor through the I2C interface of the 0TDR controller, and after the 0TDR test is completed, The I2C interface reads and analyzes a test signal of the 0TDR processor by using the I2C bus;
  • the RSSI processor receives the first control instruction through its own I2C interface, shuts down its own interface according to the first control instruction, and stops transmitting and receiving data signals;
  • the 0TDR processor receives the first control command through its own I2C interface, opens its own interface, and triggers the 0TDR test.
  • the optical line terminal provided by the embodiment of the present application is connected to the I2C bus of the I2C interface of the RSSI processor by using the I2C interface of the RSSI controller on the board of the optical line terminal to implement the control of the 0TDR processor, thereby implementing the optical network.
  • the board can support the optical transceiver module of the original supported 0TDR test at the same time. It can also support the optical transceiver module that does not support the 0TDR test at the same time, and realize the smooth upgrade of the 0TDR optical transceiver module.
  • FIG. 1 is a schematic structural diagram of a passive optical network system.
  • FIG. 2 is a schematic structural diagram of an optical transceiver module according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart diagram of a fiber detecting method according to an embodiment of the present application. detailed description
  • the optical transceiver module and the optical fiber detection method provided by the present application are described in detail below with reference to specific embodiments.
  • the optical transceiver module provided by the present application can be applied to a point-to-multipoint optical network such as a passive optical network system.
  • FIG. 1 is a schematic structural diagram of a passive optical network system.
  • the passive optical network system 100 includes at least one optical line termination 110, a plurality of optical network units 120, and an optical distribution network 130.
  • the optical line terminal 110 is coupled to the plurality of optical network units 120 via the optical distribution network 130.
  • the direction from the optical line terminal 110 to the optical network unit 120 is defined as a downlink direction, and the direction from the optical network unit 120 to the optical line terminal 110 is an uplink direction.
  • the passive optical network system 100 can be a communication network that does not require any active devices to implement data distribution between the optical line terminal 110 and the optical network unit 120, for example, in a specific embodiment, Data distribution between the optical line terminal 110 and the optical network unit 120 can be implemented by passive optical devices (such as optical splitters) in the optical distribution network 130.
  • the passive optical network system 100 may be an Asynchronous Transfer Mode Passive Optical Network (ATM PON) system or a Broadband Passive Optical Network (BP0N) system defined by the ITU-T G.983 standard, ITU-T G. 984 Standard defined Gigabit Passive Optical Network (GP0N) system, Ethernet Passive Optical Network (EP0N) defined by IEEE 802.
  • the optical line terminations 110 are typically located at a central location (e.g., Central Office, CO) that can collectively manage the one or more optical network units 120.
  • the optical line terminal 110 can serve as a medium between the optical network unit 120 and an upper layer network (not shown), and the data received from the upper layer network is used as downlink data and forwarded through the optical distribution network 130 to The optical network unit 120, and the uplink data received from the optical network unit 120, are forwarded to the upper layer network.
  • the I2C interface of the RSSI controller 202 is connected to the I2C interface of the RSSI processor 205 via an I2C bus;
  • the 0TDR controller 201 is connected to the I2C interface of the 0TDR processor 204 through an I2C bus between the I2C interface of the RSSI controller 202 and the I2C interface of the RSSI processor 205;
  • the 0TDR controller 202 is configured to send a first control instruction to the RSSI processor 205 and the 0TDR processor 204 through the I2C bus through its own I2C interface before performing the 0TDR test, when 0TDR After the test is completed, the test signal of the OTDR processor 204 is read and analyzed by using the I2C bus through the I2C interface;
  • the 0TDR processor 204 is configured to receive the first control command through its own I2C interface, open its own interface, and trigger the 0TDR test.
  • the Trigger interface of the RSSI controller 202 is connected to the Trigger interface of the RSSI processor 205 by a line; the line between the Trigger interface of the RSSI controller 202 and the Trigger interface of the RSSI processor 205 is respectively Connecting with the RSSI processor 205 and the 0TDR processor 204;
  • the 0TDR controller 201 is further configured to send a test command to the line between the Trigger interface of the RSSI controller 201 and the Trigger interface of the RSSI processor through the Trigger interface of the RSST test during the 0TDR test.
  • the 0TDR processor 204 performs an 0TDR test;
  • the 0TDR processor 204 is further configured to receive the test instruction by using its own Trigger interface, control the test signal driver to send a test signal according to the test instruction, and trigger the 0TDR measurement unit to measure the optical power of the test signal; Receiving a reflected signal generated by the reflection of the test signal on the optical fiber network for analysis and processing.
  • the 0TDR controller 201 is further configured to send, by using the I2C bus, a second control instruction to the RSSI processor 205 and the 0TDR processor 204 after completing the 0TDR test.
  • the RSSI processor 205 is further configured to receive the second control instruction through its own I2C interface, open its own interface according to the second control instruction, control a data signal driver, and send a data signal; trigger the RSSI measurement unit Measuring the optical power of the data signal;
  • the 0TDR processor 204 is further configured to receive the second control command through its own I2C interface, close its own interface, and stop the 0TDR test.
  • the test signal sent by the optical transceiver module 200 may be a single-wavelength signal, and the same wavelength (ie, uplink wavelength) is used with the uplink data signal, and the light receiving component is shared.
  • the optical distribution network 130 can be a data distribution system that can include fiber optics, optical couplers, optical splitters, and/or other devices.
  • the optical fiber, optical coupler, optical splitter, and/or other device may be a passive optical device, in particular, the optical fiber, optical coupler, optical splitter, and/or other
  • the device may be a device that distributes data signals between the optical line terminal 110 and the optical network unit 120 without the need for power support.
  • the optical distribution network 130 may also include one or more processing devices, such as optical amplifiers or relay devices.
  • the optical distribution network 130 may specifically extend from the optical line terminal 110 to the plurality of optical network units 120 by means of two-stage splitting, but may be configured as any other. Point-to-multipoint (such as single-stage split or multi-stage split) or point-to-point structure.
  • the optical distribution network 130 uses a splitter to implement data distribution.
  • the optical distribution network 130 can be deployed in a two-stage splitting manner, including the first level, for reliability and operation and maintenance considerations.
  • the beam splitter 131 and the plurality of second stage beamsplitters 132 are connected to the optical transceiver module 200 of the optical line terminal 110 through a lead fiber 133, and the branch ends thereof are respectively connected to the distributed optical fiber 134 through a distribution fiber 134.
  • the common ends of the second-stage optical splitters 132, and the branch ends of each of the second-stage optical splitters 132 are further connected to the corresponding optical network unit 120 through a branch fiber (135).
  • the downlink data signal sent by the optical line terminal 110 is first split by the first-stage optical splitter 131, and then split by the second-stage optical splitter 132 to form a multi-path downlink.
  • the signals are transmitted to the respective optical network unit 120.
  • the uplink data signals sent by the respective optical network units 120 are sequentially combined by the second-stage optical splitter 132 and the first-stage optical splitter 131, and then transmitted to the optical line terminal 110.
  • the first-stage optical splitter 131 can be deployed in an optical distribution frame (0DF) that is closer to the central office, and the second-level optical splitter 132 can be deployed in a remote node (Remote Node, RN).
  • optical line terminal 110 The specific implementation of the optical line terminal 110 provided by the present application is described in detail below with reference to FIG.
  • FIG. 2 is a schematic structural diagram of an optical line terminal 110 according to an embodiment of the present application.
  • the optical line terminal 110 includes: a single board 203 and an optical transceiver module 200 of the optical line terminal, wherein the 0TDR controller 201 and the RSSI controller 202 are disposed on the board 203 of the optical line terminal, the OTDR processor 204 and the RSSI The processor 205 is disposed in the optical transceiver module 200;
  • the I2C interface 243 of the RSSI controller 202 is connected to the I2C interface 245 of the RSSI processor 2033 via an I2C bus;
  • the 0TDR controller 201 is connected to the I2C interface of the 0TDR processor 204 through an I2C bus between the I2C interface 243 of the RSSI controller 202 and the I2C interface 245 of the RSSI processor 2033; the 0TDR control The device 201 is configured to send, by using the I2C bus 241, a first control instruction to the RSSI processor 2033 and the 0TDR processor 204 through the I2C interface 241 before performing the 0TDR test. After the 0TDR test is completed, Reading and analyzing the test signal of the OTDR processor through the I2C interface 241 by using the I2C interface 241;
  • the RSSI processor 2033 is configured to receive the first control instruction through its own I2C interface 245, shut down its own interface according to the first control instruction, and stop transmitting and receiving data signals;
  • the 0TDR processor 204 is configured to receive the first control command through its own I2C interface (not shown in FIG. 2), open its own interface, and trigger the 0TDR test.
  • the Trigger interface 242 of the RSSI controller 202 and the Trigger interface 244 of the RSSI processor 2033 are connected by an RSSI Trigger line; the Trigger interface 242 of the RSSI controller 202 and the Trigger interface of the RSSI processor 2033 An RSSI Trigger line between 244 is connected to the RSSI processor 2033 and the 0TDR processor 204, respectively;
  • the 0TDR controller 201 is further configured to use the RSSI Trigger between the Trigger interface 242 of the RSSI controller 202 and the Trigger interface 244 of the RSSI processor 2033 through the Trigger interface 240 when performing the 0TDR test.
  • the line sends a test command to the 0TDR processor to perform a 0TDR test.
  • the 0TDR processor 204 is further configured to receive the test command through its own Trigger interface, and control the test signal driver according to the test command, and send the test. Signal; triggering the 0TDR measurement unit for the test signal The optical power is measured; and the reflected signal generated by the reflection of the test signal in the optical network is received for analysis and processing.
  • the 0TDR controller 201 is further configured to send, by using the I2C bus, the second control instruction to the RSSI processor 2033 and the 0TDR processor by using the I2C interface 241 after completing the 0TDR test. 204;
  • the RSSI processor 2033 is further configured to receive the second control instruction through its own I2C interface, open its own interface according to the second control instruction, control the data signal driver, and send a data signal; trigger the RSSI measurement unit pair Measuring the optical power of the data signal;
  • the 0TDR processor 204 is further configured to receive the second control command through its own I2C interface, close its own interface, and stop the 0TDR test.
  • the 0LT board 203 further includes: a data receiver Data Rx 2031 and a data transmitter Data Tx2031 for controlling the uplink data reception and the downlink data transmission, respectively.
  • the optical transceiver module 200 includes a driving component 210 for driving the optical component 220, and a light component 220 for performing test signals and data signals under the driving of the driving component 210.
  • the driving component 210 can also perform signal pre-processing on the test signal and/or data signal received by the optical component 220.
  • the optical component 220 can first be connected to the backbone optical fiber 133 of the optical distribution network 130 through the optical fiber adapter 230, and send a downlink data signal to the optical network unit 120 through the optical distribution network 130 and receive the optical network unit. 120 uplink data signal transmitted.
  • the optical component 220 can include a data signal transmitter 221, a data signal receiver 222, and a filtering component 223.
  • the data signal transmitter 221 may be a laser diode (LD) for transmitting a downlink data signal having a first wavelength ⁇ 1 (hereinafter referred to as a downlink data signal ⁇ 1); the data signal receiver 222 may be a photodiode (PD), such as an Avalanche Photo Diode (APD), for receiving an uplink data signal having a second wavelength ⁇ 2 (hereinafter referred to as an uplink data signal ⁇ 2 ).
  • the filtering component 223 can couple at least a portion of the downlink data signal ⁇ 1 transmitted by the data transmitter 221 to the fiber optic adapter 230 and couple at least a portion of the uplink data signal ⁇ 2 input from the fiber optic adapter 230 To the data signal receiver 220.
  • the filtering component 223 can include a first wavelength division multiplexing (WDM) filter 227, a second wavelength division multiplexing filter 228, and a beam splitter filter 229.
  • the first A wavelength division multiplexing filter 227, the second wavelength division multiplexing filter 228, and the beam splitter filter 229 may be sequentially disposed on the main optical path of the optical component 220 along the extending direction of the optical fiber adapter 230. And having a certain angle with the main light path.
  • the first wavelength division multiplexing filter 227 can transmit about 100% of the optical signal having the first wavelength ⁇ 1 and about y % to the optical signal having the second wavelength ⁇ 2 . The reflection and transmission of approximately (100-y) %.
  • the second wavelength division multiplexing filter 228 may transmit about 100% of the optical signal having the first wavelength ⁇ 1 and about 100% of the signal having the second wavelength ⁇ 2 .
  • the beam splitter filter 229 can perform ⁇ % transmission and (100- ⁇ )% reflection of the optical signal having the first wavelength ⁇ 1 .
  • the values of x and y may both be 90, and the first wavelength ⁇ 1 and the second wavelength ⁇ 2 may be 1490 nm and 1310 nm, respectively, or 1577 nm and 1270 nm.
  • the transmitted optical path of 229 overlaps with the main optical path of the optical component 220, and the reflection of the first wavelength division multiplexing filter 227, the second wavelength division multiplexing filter 228, and the optical splitter filter 229
  • the optical paths are substantially perpendicular to the main optical path.
  • the data signal transmitter 221 is coupled to the transmitted optical path of the beam splitter filter 229, and the data signal receiver 222 is coupled to the reflected optical path of the first wavelength division multiplexing filter 227. Therefore, in the optical component 220, the downlink data signal ⁇ 1 transmitted by the data signal transmitter 221 may be transmitted through the optical splitter filter 229 and the second wavelength division multiplexing filter 228.
  • the first wavelength division multiplexing filter 227 is output through the fiber optic adapter 230, and about y% of the uplink data signal ⁇ 2 input through the fiber optic adapter 230 can be reflected to the data signal receiver 222. Received by the data signal receiver 222 and converted into an electrical signal.
  • the test signal transmitter 224 can be configured to transmit a second OTDR test signal (hereinafter referred to as a second OTDR test signal ⁇ 2 ') having the second wavelength ⁇ 2 , wherein the second OTT test signal ⁇ 2 ' Approximately 100% can be reflected by the second wavelength division multiplexing filter 228 to the main optical path of the optical component 220, and approximately (100 ⁇ )% of the second OTDR test signal ⁇ 2 ' can be further transmitted through The first wavelength division multiplexer 227 is described and transmitted to the fiber optic adapter 230.
  • a second OTDR test signal hereinafter referred to as a second OTDR test signal ⁇ 2 '
  • Approximately 100% can be reflected by the second wavelength division multiplexing filter 228 to the main optical path of the optical component 220, and approximately (100 ⁇ )% of the second OTDR test signal ⁇ 2 ' can be further transmitted through
  • the first wavelength division multiplexer 227 is described and transmitted to the fiber optic adapter 230.
  • the fiber optic adapter 230 can output the second OTT test signal ⁇ 2 ' to the optical distribution network 130.
  • the second OTT test signal ⁇ 2 ' may be reflected or scattered during transmission of the optical distribution network 130 to form a second reflected signal ⁇ 2 ''.
  • the second reflected signal ⁇ 2 '' also has the second wavelength ⁇ 2 and it returns along the original path and is input to the optical component 220 through the fiber optic adapter 230.
  • the data signal receiver 222 may receive the second reflected signal ⁇ 2 ' ' corresponding to the second OTDR test signal ⁇ 2 ' in addition to the uplink data signal ⁇ 2 . That is, the second reflected signal ⁇ 2 ' ' may share the data signal receiver 222 with the uplink data signal ⁇ 2 .
  • the driving component 210 is in front of starting the transmission of the second OTDR test signal ⁇ 2 ′.
  • the data signal transmitter 221 can be driven to issue an instruction to suspend uplink data transmission to the optical network unit 120.
  • the data signal receiver 222 may further convert the second reflected signal ⁇ 2 ′′ into an electrical signal and provide the same to the driving component 210.
  • the 0TDR processor 204 performs signal processing.
  • Adapter 230 optionally, a second lens 294 can be added between the test signal transmitter 224 and the second wavelength division multiplexing filter 228.
  • test signal transmitter 224 is prevented from being damaged due to the return of the second reflected signal ⁇ 2 ' ' along the original path, optionally at the test signal transmitter 224 and the A second optical isolator 295 can be added between the second wavelength division multiplexing filters 228 for blocking the second reflected signal ⁇ 2 ' ' from entering the test signal transmitter 224.
  • the optical component 220 may further include a second light absorber 296, and the second light absorber 296 may be disposed at the first wavelength division multiplexing filter 227 facing away from the data signal receiver 222.
  • the second light absorber 296 can be configured to absorb the second OTT test signal ⁇ 2 emitted by the test signal transmitter, generated by the reflection of the first wavelength division multiplexing filter 227 An optical signal to prevent it from being secondarily reflected by the pedestal of the optical component 220 and received by the data signal receiver 222 through the first wavelength division multiplexing filter 227, and further to the second reflected signal ⁇ 2 ' ' causes interference.
  • the optical component 220 may further include a first transimpedance amplifier (Trans-Impedance).
  • Trans-Impedance Trans-Impedance
  • the first transimpedance amplifier is disposed between the data signal receiver 222 and the driving component 210 for the uplink data signal ⁇ 2 at the data signal receiver 222 or
  • the second reflected signal ⁇ 2 ' ' performs photoelectric conversion and performs signal preamplification.
  • the first transimpedance amplifier and the second transimpedance amplifier may also be disposed inside the drive assembly 210.
  • the second OTT test signal ⁇ 2 ′ may be mainly used to detect the optical distribution network.
  • the branch fiber 135 of 130 and the fiber event occurring by the optical network unit 120 implement fault characterization and delimitation of the branch fiber 135 and the optical network unit 120.
  • the drive component 210 can include an OTDR processor 204, a data signal driver 212, a test signal driver 213, and a channel selection unit 214.
  • the channel selection unit 214 includes an input terminal 207, a data signal output terminal 208, and a test control terminal 209.
  • the input terminal 207 of the channel selection unit 214 is connected to the optical component 220, and the data signal output of the channel selection unit 214 is
  • the terminal 208 can be coupled to the signal output 217 of the drive assembly 210 via a limiting amplifier, and the test control 209 of the channel selection unit 214 is coupled to the OTDR processor 204.
  • the data signal output 208 of the channel selection unit 214 may also be directly connected to the signal output 217 of the drive component, and the limiting amplifier is disposed at the input 207 of the channel selection unit 214 and Between the optical components 220.
  • the channel selection unit 214 may alternatively adopt the following structure.
  • the input terminal 207 of the channel selection unit 214 and the data signal output terminal 208 are directly connected, and a circuit for implementing channel selection is disposed between the input terminal 207 and the test control terminal 209, and the channel selection is performed.
  • Unit 214 under the control of the OTDR processor 204, can drive two optical signals provided to the data output 208 and the test control 209 via its input 207.
  • the channel selection unit 214 can receive the uplink data signal ⁇ 2 or the second reflection signal ⁇ 2 ′′ output by the data signal receiver 222 of the optical component 220 through the input end 207 thereof, and the channel The selection unit 214 can also selectively signal forward under the control of the OTDR processor 204. For example, in the normal data communication mode, the channel selection unit 214 can establish a transmission channel between the input terminal 207 and the data signal output terminal 208, and disconnect the input terminal 207 and the test control terminal. a transmission channel between 209, thereby forwarding the uplink data signal ⁇ 2 received by the optical component 220 to the signal output terminal 217 to provide the uplink data signal ⁇ 2 to the data of the optical line terminal 110 Processing module 201.
  • the channel selection unit 214 may receive a corresponding channel switching command from the OTDR processor 204 through the test control terminal 209, and disconnect the input terminal 207 and the data signal output terminal.
  • a transmission channel between 208, and establishing a transmission channel between the input terminal 207 and the test control terminal 209, thereby passing the second reflection signal ⁇ 2 ' ' output by the optical component 220 through the test control terminal 209 is provided to the OTDR processor 204 for signal processing.
  • the OTDR processor 204 is coupled to the data signal driver 212, the test signal driver 213, and the channel selection unit 214, respectively.
  • the data signal driver 212 and the test signal driver 213 are divided into The data signal transmitter 221 and the test signal transmitter 224 of the optical component 220 are not further connected.
  • the data signal driver 212 is configured to drive the data signal transmitter 221 to transmit the downlink data signal ⁇ 1
  • the test signal driver 213 is configured to drive the test signal transmitter 224 to transmit the second OTDR test. Signal ⁇ 2 '.
  • the test signal driver 213 is optional. In other alternative embodiments, the OTDR processor 204 can also directly drive the test signal transmitter 224 to transmit the second OTDR test signal ⁇ 2 '.
  • the data signal driver 212 can receive downlink data from the data processing module 201 of the optical line terminal 110 through the signal input terminal 218, and modulate the downlink data to the data signal transmitter 221
  • the first wavelength ⁇ 1 optical signal is transmitted, thereby forming and outputting the downlink data signal ⁇ 1 .
  • the OTDR processor 204 can also provide second OTT test data to the test signal driver 213, and the data signal driver 212 can modulate the second OTDR test data to the data signal transmission.
  • the second wavelength ⁇ 2 optical signal emitted by the device 221 forms and outputs the second OTDR test signal ⁇ 2 '.
  • the OTDR processor 204 can be in a standby or low power state in the normal data communication mode, and correspondingly, the transmission channel between the input terminal 207 and the data signal output terminal 208 of the channel selection unit 214 is correspondingly through.
  • the 0TDR processor 204 receives the 0TDR test enable signal from the data processing module 201 of the optical line terminal 110 through the I2C interface (or other control signal line) 219, it can control the related functions of the optical transceiver module 200.
  • the unit enters the 0TDR test mode, including controlling the channel selection unit 214 to disconnect the transmission channel between its input terminal 207 and the data signal output terminal 208, and establishing a transmission channel between the input terminal 207 and the test control terminal 209.
  • the OTDR processor 204 receives the second reflected signal ⁇ 2 ' ' output by the data signal receiver 222 of the optical component 220 through the channel selection unit 214, and the second The reflected signal ⁇ 2 ' ' performs signal preprocessing (including signal amplification, sampling, digital processing, etc.). Further, the OFDM processor 204 may output the preprocessed reflected signal ⁇ 2 ′ to the data processing module 201 of the optical line terminal 110 through the I2C interface, so that the data processing module 201 performs a signal. The analysis process is performed to obtain an 0TDR test curve of the optical distribution network 130.
  • the data processing module 201 may obtain a second OTDR test curve by analyzing the second reflected signal ⁇ 2 ′′ preprocessed by the OTDR processor 204, and perform the light according to the second OTDR test curve.
  • the data processing module 201 may further perform further data integration processing to obtain a trunk optical fiber that can be used for the optical distribution network 130. Complete 0TDR test curve for fiber analysis and fault diagnosis for distributed and branched fibers.
  • the 0TDR processor 204 may also have fiber line analysis capabilities, i.e., the fiber analysis and fault diagnostic functions of the data analysis module 201 may be implemented within the 0TDR processor 204. Therefore, after the pre-processing of the second reflected signal ⁇ 2 ′′, the OTDR processor 204 may directly analyze the second reflected signal ⁇ 2 ′′ to obtain the second OTDR test curve, and further according to the The second 0TDR test curve performs fiber line analysis and fault location of the backbone fiber 133 and the distribution fiber 134 of the optical distribution network 130, and the line analysis of the branch fiber 135 and the optical network unit 120 of the optical distribution network 130 And faults are defined and delimited.
  • the optical line terminal provided by the embodiment of the present application is connected to the I2C bus of the I2C interface of the RSSI processor by using the I2C interface of the RSSI controller on the board of the optical line terminal to implement the control of the 0TDR processor, thereby implementing the optical network.
  • the board can support the optical transceiver module of the original supported 0TDR test at the same time. It can also support the optical transceiver module that does not support the 0TDR test at the same time, and realize the smooth upgrade of the 0TDR optical transceiver module.
  • the present application further provides a fiber detection method.
  • FIG. 3 is a schematic flowchart of a method for detecting an optical fiber according to an embodiment of the present disclosure, is applied to a passive optical network, where the passive optical network includes: a single board and an optical transceiver module of the optical line terminal, where The 0TDR controller and the RSSI controller are disposed on a board of the optical line terminal, and the 0TDR processor and the RSSI processor are disposed in the optical transceiver module, and the 0TDR controller passes the I2C interface of the RSSI controller An I2C bus between the I2C interfaces of the RSSI processor is connected to an I2C interface of the 0TDR processor, and the testing method includes:
  • the 0TDR controller Before performing the 0TDR test, the 0TDR controller sends the first control command to the RSSI processor and the 0TDR processor by using the I2C interface of the 0TDR controller, when the 0TDR test is completed. Reading and analyzing the test signal of the 0TDR processor by using the I2C bus through the I2C interface;
  • the RSSI processor receives the first control instruction through its own I2C interface, and closes its own interface according to the first control instruction, and stops receiving and transmitting data signals.
  • the 0TDR processor receives the first control instruction through its own I2C interface, opens its own interface, and triggers a 0TDR test.
  • the testing method further includes: After completing the OTDR test, the OTDR controller sends the second control instruction to the RSSI processor and the 0TDR processor through the I2C interface through the I2C interface;
  • the RSSI processor receives the second control instruction through its own I2C interface, opens its own interface according to the second control instruction, controls the data signal driver, and transmits a data signal; triggers the optical power of the RSSI measurement unit to the data signal. Make measurements.
  • the 0TDR processor receives the second control command through its own I2C interface, shuts down its own interface, and stops the 0TDR test.
  • the testing method further includes: when the OTDR test is performed, the OTDR controller sends a test command to the station by using a line between the RSSI controller and the RSSI processor through its own Trigger interface.
  • the 0TDR processor is described, and the 0TDR test is performed;
  • the 0TDR processor receives the test command through its own Trigger interface, controls the test signal driver according to the test command, and sends a test signal; triggers the 0TDR measurement unit to measure the optical power of the test signal; and receives the test signal.
  • the reflected signal generated by the reflection in the optical network is analyzed and processed.
  • the optical fiber detection method provided by the embodiment of the present application realizes control of the 0TDR processor by connecting the I2C interface of the RSSI controller on the board of the optical line terminal with the I2C interface of the ISSI interface of the RSSI processor, thereby implementing the optical network.
  • the board can support the optical transceiver module of the original supported 0TDR test at the same time. It can also support the optical transceiver module that does not support the 0TDR test at the same time, and realize the smooth upgrade of the 0TDR optical transceiver module.
  • RAM random access memory
  • ROM read only memory
  • EEPROM electrically programmable ROM
  • EEPROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, or in the technical field. Any other form of storage medium known.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un procédé de détection optique. Une commande est mise en œuvre sur un processeur OTDR par réutilisation d'une connexion bus I2C entre une interface I2C d'un contrôleur RSSI sur une carte d'un terminal de ligne optique et une interface I2C d'un processeur RSSI de manière à permettre la localisation d'un dérangement sur une ligne de jonction à fibre et une fibre distribuée sur un réseau à fibres, et l'analyse et l'établissement et la délimitation de la responsabilité du dérangement pour des branches de fibre et des lignes d'une unité de réseau optique, à la place d'une modification d'une broche d'origine d'un module émetteur-récepteur optique sur le terminal de ligne optique. De cette manière, la carte du terminal de ligne optique compatible avec la technologie OTDR permet la prise en charge à la fois d'un module émetteur-récepteur optique d'origine admettant un test OTDR et d'un module émetteur-récepteur optique d'origine n'admettant pas le test OTDR, d'où la possibilité d'une mise à niveau sans difficulté du module émetteur-récepteur optique sous OTDR.
PCT/CN2012/078026 2012-07-02 2012-07-02 Terminal de ligne optique, module émetteur-récepteur optique, système et procédé de détection de fibre Ceased WO2014005259A1 (fr)

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CN201610931545.3A CN106506069B (zh) 2012-07-02 2012-07-02 光线路终端、光收发模块、系统以及光纤检测方法
CN201280001146.7A CN104205676B (zh) 2012-07-02 2012-07-02 光线路终端、光收发模块、系统以及光纤检测方法
PCT/CN2012/078026 WO2014005259A1 (fr) 2012-07-02 2012-07-02 Terminal de ligne optique, module émetteur-récepteur optique, système et procédé de détection de fibre

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220321211A1 (en) * 2021-04-05 2022-10-06 Verizon Patent And Licensing Inc. Systems and methods for sensing fiber optic cables of access networks

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106774059B (zh) * 2016-12-08 2019-07-09 上海交通大学 一种用于海洋工程的光纤采集分析双备份装置的控制系统
WO2019056204A1 (fr) * 2017-09-20 2019-03-28 华为技术有限公司 Module optique, onu, système de pon, et procédé de traitement de signal
CN112583476B (zh) * 2019-09-27 2022-05-17 华为技术有限公司 光网络终端以及光纤测试方法
CN110996193B (zh) * 2019-11-19 2021-10-26 华为技术有限公司 识别光网络单元连接端口的方法、相关装置及系统
CN118612016B (zh) * 2024-08-08 2024-10-11 宇洪通信技术(武汉)有限公司 Fttr主网关以及主网关终端光接口的定位方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101789824A (zh) * 2009-12-30 2010-07-28 中兴通讯股份有限公司 一种在线获取光网络单元光功率的装置和方法
CN101917226A (zh) * 2010-08-23 2010-12-15 中兴通讯股份有限公司 一种在无源光网络中进行光纤故障诊断的方法及光线路终端

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2859659Y (zh) * 2005-06-14 2007-01-17 浙江中控电气技术有限公司 实现i2c设备可插拔的i2c接口及主设备
CN101048009A (zh) * 2006-03-31 2007-10-03 株式会社日立制作所 无源光网络系统中控制ip包服务质量的方法和系统
US7872737B2 (en) * 2007-07-27 2011-01-18 Tyco Electronics Subsea Communications Llc System and method for optical time domain reflectometry using multi-resolution code sequences
CN101309257A (zh) * 2008-07-08 2008-11-19 中兴通讯股份有限公司 一种基于内部集成电路总线的单板通信方法及系统
CN202077034U (zh) * 2011-06-23 2011-12-14 深圳新飞通光电子技术有限公司 Olt光收发一体模块

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101789824A (zh) * 2009-12-30 2010-07-28 中兴通讯股份有限公司 一种在线获取光网络单元光功率的装置和方法
CN101917226A (zh) * 2010-08-23 2010-12-15 中兴通讯股份有限公司 一种在无源光网络中进行光纤故障诊断的方法及光线路终端

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220321211A1 (en) * 2021-04-05 2022-10-06 Verizon Patent And Licensing Inc. Systems and methods for sensing fiber optic cables of access networks
US11916588B2 (en) * 2021-04-05 2024-02-27 Verizon Patent And Licensing Inc. Systems and methods for sensing fiber optic cables of access networks

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