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Optical signal-to-noise ratio (OSNR) test method and device

A technology of optical signal-to-noise ratio and test method, which is applied in the field of optical communication, can solve problems such as the inapplicability of super channels, and achieve the effect of reliable optical signal-to-noise ratio

Active Publication Date: 2014-12-24
CHINA ACADEMY OF INFORMATION & COMM
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Problems solved by technology

[0005] In view of this, the present application provides an optical signal-to-noise ratio test method and device to solve the problem that the OSNR test of a single carrier modulated optical signal cannot be applied to super channels with multiple subcarriers and flexible frequency spectrum interval multiplexing

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  • Optical signal-to-noise ratio (OSNR) test method and device
  • Optical signal-to-noise ratio (OSNR) test method and device
  • Optical signal-to-noise ratio (OSNR) test method and device

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Embodiment Construction

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] The present application provides a method for measuring optical signal-to-noise ratio, by performing OSNR measurement within an effective bandwidth on each subcarrier in a multi-subcarrier multiplexed superchannel to obtain the OSNR of the entire superchannel.

[0023] The high-resolution optical spectrum analyzer can complete the OSNR measurement scheme provided in this application, and the high-resolution optical spectrum analyzer is referred to as the optical spectrum analyzer for short in the process of describing the OSNR measurement in detail below.

[0024] see figure 1 , figure 1 It is a schematic flow chart of the optical signal-to-noise ratio test method in the specific embodiment of the present application. Sp...

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Abstract

The invention provides an optical signal-to-noise ratio (OSNR) test method. The method includes: determining the number of subcarriers in multi-subcarrier multiplexing super channels and measuring central wavelength and effective bandwidth of the subcarriers; subjecting each subcarrier to OSNR measurement which includes that the OSNR of the subcarrier is measured in the effective bandwidth at the central wavelength location, and the effective bandwidth is the effective bandwidth acquired during performing the effective bandwidth measurement on the subcarrier; acquiring the multi-subcarrier multiplexing super channels according to the OSNRs of the subcarriers and the number of the subcarriers acquired in measurement. On the basis of the method, the invention further provides an OSNR test device. By the method and the device, the reliable OSNRs of the multi-subcarrier multiplexing super channels can be acquired.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an optical signal-to-noise ratio testing method and device. Background technique [0002] With the rapid development of new Internet services, the demand for the capacity and bandwidth of optical fiber bearer network is increasing day by day. In the 100 Gbit After the / s, referred to as 100G optical communication system has matured and been commercialized on a large scale, the ultra-100G optical communication system represented by 400Gbit / s, referred to as 400G has also begun to enter the stage of laboratory testing and trial commercialization. [0003] The beyond 100G optical communication system aims to improve spectral efficiency and transmission distance, and introduces new technical features such as high-order modulation formats, multi-subcarrier multiplexing super channels, and flexible spectrum spacing at the physical layer. For over 100G optical communicati...

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Application Information

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IPC IPC(8): H04B10/07
Inventor 汤瑞赖俊森赵文玉张海懿汤晓华吴冰冰赵鑫李少晖
Owner CHINA ACADEMY OF INFORMATION & COMM
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