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A single-fiber bidirectional optical module and optical path detection method

An optical path detection, single-fiber bidirectional technology, applied in transmission monitoring/testing/fault measurement systems, transmission systems, electromagnetic wave transmission systems, etc., can solve problems affecting business, reduce operating costs, shorten operation and maintenance, and alarm the effect of time

Active Publication Date: 2016-12-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a single-fiber bidirectional optical module and an optical path detection method to overcome the defects that affect the service when the optical transmitter with the original service wavelength is reused for detection

Method used

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  • A single-fiber bidirectional optical module and optical path detection method
  • A single-fiber bidirectional optical module and optical path detection method
  • A single-fiber bidirectional optical module and optical path detection method

Examples

Experimental program
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Effect test

Embodiment 1

[0061] In order to avoid the wavelength of the uplink and downlink services, light of a third wavelength different from the wavelength of the uplink and downlink services is used for optical path detection.

[0062] Such as image 3 As shown, the device is installed in the original BOSA (Bi-directional Optical SubAssembly, single-fiber bidirectional optical module) composed of the first downlink optical transmitter Tx0, the first wavelength division multiplexing filter WDM0 and the first optical receiver Rx0 In the structure, a control unit, a light guide, a second downlink optical transmitter Tx1 of a third wavelength (such as 1625nm), a second wavelength division multiplexing filter WDM1 and a second optical receiver Rx1 are added, through the newly added WDM1 guides light of the third wavelength so that service light does not enter the light guide. The newly added control unit can control the optical path detection and perform corresponding data processing. Wherein, in sp...

Embodiment 2

[0068] Such as Figure 4 As shown, on the basis of the structure of the first embodiment above, the interrelationship of these devices is clarified.

[0069] The MAC chip of the OLT is connected to the optical module through four connecting lines, among which Tx0 Data and Tx0 Disable control the first downlink optical transmitter Tx0 through the first laser driver, and the connecting line Rx passes through the LIA (Lock-In Amplifier, locked Amplifier) ​​and TIA (Transimpedance Amplifier, transimpedance amplifier) ​​to receive the data received by the first optical receiver Rx0, and the MAC chip of the OLT is connected to the control unit in the optical module through the OTDR connection line, which is used to start / close the OTDR The test command and the transmission of OTDR data; the control unit in the optical module is used to execute the command sent by the OLT MAC chip and perform data processing on the received reflected light of the optical path detection light sent by ...

Embodiment 3

[0072] Such as Figure 5 As shown, in this embodiment, the device adds a control unit to the original BOSA structure composed of the first downlink optical transmitter Tx0, the first wavelength division multiplexing filter WDM0 and the first optical receiver Rx0 , a second wavelength division multiplexing filter WDM1, an optical splitter, a second downlink optical transmitter Tx1 that emits optical path detection light of a third wavelength (such as 1625nm), and a second optical receiver Rx1.

[0073] The transmission process of its uplink and downlink service light is as follows: the first downlink optical transmitter Tx0 will send out downlink service light with a wavelength of 1490nm for GPON or EPON, and will send out a downlink service light with a wavelength of 1577nm for XG-PON or 10G-EPON , through the first wavelength division multiplexing filter WDM0, the second wavelength division multiplexing filter WDM1 and the optical splitter are directed to the optical fiber in...

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Abstract

The invention discloses a single-fiber bidirectional optical module and an optical path detection method. The method is applied to a single-fiber bidirectional optical module, including: receiving and managing the optical line of the optical module through the optical path detection interface on the optical module After the detection command sent by the terminal, emit the optical path detection light whose wavelength is different from the wavelength of the service uplink light and service downlink light of the optical line terminal; output the optical path detection light to the optical fiber interface, and receive the optical path detection light from the optical fiber interface The optical path detects the reflected light of the light; after the reflected light is converted into an electrical signal, data processing is performed on the electrical signal, and the processed data is transmitted to the optical line terminal through the optical path detection interface. The invention does not interfere with the normal business operation, and organically combines the original equipment with the optical path detection characteristics, which satisfies the desire of the operator to detect the optical fiber fault with the existing equipment, and greatly shortens the operation time. Maintenance and alarm time, reducing the operator's operating costs.

Description

technical field [0001] The invention relates to an optical network in the communication field, in particular to a single-fiber bidirectional optical module and an optical path detection method. Background technique [0002] With the rapid development of network technology and the popularization of network applications, such as network communication, online shopping and network entertainment, etc. have become a part of modern life, the existing access network copper wire (ie wired) system is far from enough This high-speed and broadband demand, and the passive optical network is broadband and high-speed, environmental protection and energy-saving broadband access technology, is the best candidate to replace the existing access network, it is being used by most operators Accepted and deployed to provide faster and better services to the growing number of communication users. [0003] After the placement and deployment of a large number of passive optical networks, it is neces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/071H04B10/40H04J14/02H04B10/07H04Q11/00
Inventor 徐继东陆建鑫李长垒李振刚
Owner ZTE CORP