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Optical signal-to-noise ratio monitoring method and device

An optical signal-to-noise ratio and optical signal technology, which is applied in the field of optical communication and can solve problems such as inability to monitor system OSNR.

Pending Publication Date: 2022-07-01
华海通信技术有限公司
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AI Technical Summary

Problems solved by technology

[0005] This application provides an optical signal to noise ratio monitoring method and device to solve the problem that the existing technology cannot monitor the OSNR of the operating system

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  • Optical signal-to-noise ratio monitoring method and device
  • Optical signal-to-noise ratio monitoring method and device
  • Optical signal-to-noise ratio monitoring method and device

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Embodiment Construction

[0048] In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described The embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0049] The optical signal-to-noise ratio monitoring method provided in this application can be applied to such as figure 1 The dense lightwave multiplexing system (hereinafter referred to as DWDM system) is shown. like figure 1 As shown, the system includes: a plurality of optical transmitters 101 , a multiplexi...

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Abstract

The invention discloses an optical signal-to-noise ratio monitoring method and device, and the method can determine the noise power at any frequency according to a noise baseline function obtained in advance under the condition of not closing any channel, and calculates the real-time OSNR of any channel in combination with the real-time analysis of a channel spectrum. According to the method, the detected channel does not need to be closed, so that the OSNR of the system can be monitored in real time under the condition that the operation of the system is not influenced. Besides, the method can monitor the OSNRs of all channels in the optical fiber link at the same time, is high in testing efficiency, is not affected by signal types of the channels, and can be suitable for various modulation signals and non-modulation false optical signals.

Description

technical field [0001] The present application relates to the technical field of optical communication, and in particular, to a method and device for monitoring an optical signal-to-noise ratio. Background technique [0002] Optical signal-to-noise ratio (OSNR) refers to the ratio of optical signal power to noise power in an optical transmission link. It is the most important indicator for measuring DWDM (Dense Wavelength Division Multiplexing, dense optical wave multiplexing) systems. During the operation of the DWDM system, monitoring the OSNR of the system is an important technical means to understand the system performance and estimate the signal transmission quality. [0003] Based on the wave drop method defined by OSNR, the in-channel noise can be directly measured by turning off the signal of the measured channel. The method firstly obtains the first spectrum of the channel under test when the signal of the channel under test is turned on, and calculates the total p...

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Application Information

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IPC IPC(8): H04B10/079H04J14/02
CPCH04B10/07953H04J14/0201
Inventor 王彦溥林江于晶莹徐棒田赵洁惠李建苹
Owner 华海通信技术有限公司
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