An optical signal transceiver device
A transceiver device, optical signal technology, applied in the field of communication, can solve the problems affecting the dynamic range of OTDR signals, limited receiving sensitivity of photodetectors, etc.
Active Publication Date: 2021-01-29
HUAWEI TECH CO LTD
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Problems solved by technology
[0006] The current optical signal transceiver device uses photodetectors to receive OTDR signals. Due to the limited receiving sensitivity of photodetectors, the dynamic range of OTDR signal detection is affected.
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[0039] The embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0040] The optical signal transceiving device provided in the present application can be applied to an optical communication network, and the device can be a communication device in the optical communication network or a board installed in the communication device. For example, if figure 1 The shown optical communication network includes communication devices such as a first device and a second device, and the first device and the second device are connected through an optical fiber. The device may be the first device or a board in the first device, through which the first device may receive the optical signal sent by the second device, or send an optical signal to the second device; and / or, the device may be the first The second device or the board in the second device, through which the second device can receive the optical signal sent...
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The application discloses an optical signal transceiver, which belongs to the communication field. The device includes: an optical signal generation module, an optical combination and separation module, a coherent receiving module and a signal processing module; an optical signal generation module, which is used to generate an optical signal to be transmitted and a local oscillator optical signal, and the optical signal to be transmitted includes a first optical signal Time domain reflectometer OTDR signal; optical combination and division module, used to receive the optical signal to be processed from the optical fiber, and input the optical signal to be processed to the coherent receiving module; coherent receiving module, used for the described local oscillator The signal and the optical signal to be processed are coherently received to obtain an electrical signal to be processed; the signal processing module is configured to obtain a first digital signal and a second digital signal from the electrical signal to be processed according to the signal frequency, and to obtain the first digital signal and the second digital signal from the electrical signal to be processed. A digital signal is processed to obtain a communication code stream, and the second digital signal is processed to obtain information reflecting the characteristics of the optical fiber. The present application improves the dynamic range of OTDR signal detection.
Description
technical field [0001] The present application relates to the field of communications, and in particular to an optical signal transceiving device. Background technique [0002] The optical signal transceiver device can be a device in the optical network or a part of the device, and the optical signal transceiver device can send Optical Supervising Channel (Optical Supervising Channel, OSC) signals and optical time domain reflectometer (Optical Time Domain Reflectometer, OTDR) signal, and receive the OSC signal sent by the peer device and the OTDR signal reflected and scattered by the optical fiber, and process the OSC signal and the OTDR signal reflected and scattered. [0003] The current optical signal transceiving device includes: an OSC signal generator, an OTDR signal generator, a laser, an optical splitter, a first photodetector, a second photodetector, a multiplexer / demultiplexer, an OTDR processing unit and an OSC processing unit. The OSC signal generator and the OT...
Claims
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IPC IPC(8): H04B10/40H04B10/071H04B10/25H04B10/61
CPCH04B10/071H04B10/25H04B10/40H04B10/61H04B10/07H04B10/65
Inventor 董振华潘超冯志勇周谞
Owner HUAWEI TECH CO LTD