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A kind of osnr detection method, device and system

A detection method and variance technology, applied in the field of communication, can solve the problems of high processor requirements, high measurement cost and high construction cost

Active Publication Date: 2016-02-03
HUAWEI TECH CO LTD +1
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Problems solved by technology

[0004] However, the OSNR measurement method in the prior art has higher requirements on the sampling rate of the sampling device during signal sampling, which is at least twice the signal transmission rate, and the cost of the sampling device with a high sampling rate is higher, and the processing The requirements of the device are higher, so the measurement cost of the OSNR measurement method is higher

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  • A kind of osnr detection method, device and system
  • A kind of osnr detection method, device and system

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[0173] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0174] An embodiment of the present invention provides an OSNR detection method, such as figure 1 shown, including:

[0175] Step 101 , coherently receiving mutually orthogonal optical signals Ax and By, so that the optical signal Ax is converted into an electrical signal Ex, and the optical signal By is converted into an electrical signal Ey.

[0176] Specifically, the optical signal Ax and the optical signal By are first mixed by a mixer, and then photoelectrica...

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Abstract

An optical signal to noise ratio (OSNR) detection method, device and system, which relate to the field of communications and can reduce OSNR measurement costs. The method comprises: acquiring two sets of signals, i.e. Ex1 and Ey1, Ex2 and Ey2 respectively, the Ex1, the Ex2 and the Ex being equal in amplitude, the Ey1, the Ey2 and the Ey beng equal in amplitude; sampling the Ex1 and the Ex2 according to a preset sampling rate, to enable the sampling delay interval between the Ex1 and the Ex2 to be Δtx, the preset sampling rate being less than or equal to a signal transmission rate; and sampling the Ey1 and the Ey2 according to the preset sampling rate, to enable the sampling delay interval between the Ey1 and the Ey2 to be Δty. The OSNR detection method, device and system are used for OSNR detection.

Description

technical field [0001] The present invention relates to the communication field, in particular to an OSNR detection method, device and system. Background technique [0002] OSNR (optical signal-to-noiseratio, optical signal-to-noise ratio) is the ratio of in-band signal to in-band noise. It is one of the key indicators to measure the performance of WDM (wavelength division multiplexing, optical wavelength division multiplexing) network. It can directly reflect the signal quality. It is an important technical means to understand system performance and estimate signal transmission quality. The coherent communication system is a kind of WDM network. In the coherent communication system, the signal of each channel must be multiplexed and demultiplexed before being received to realize the different transmission paths of the signal of the channel, and each time the signal passes through A multiplexer or a demultiplexer is subject to certain filtering effects. In this process, th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/079
CPCH04B10/614H04B10/07953
Inventor 韦逸嘉易兴文冯志勇
Owner HUAWEI TECH CO LTD