Optical signal to noise ratio (OSNR) monitoring device and monitoring method

Optical signal to noise ratio (OSNR) monitoring device and monitoring method

The invention discloses an optical signal to noise ratio (OSNR) monitoring device and monitoring method, comprising an optical amplifier (1), a first polarization control element (2), a circulator (3), a coupler (4), a nonlinear optical element (5), an attenuator (6), a second polarization control e...

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Hauptverfasser: DAI YITANG, LI LANLAN, WU BINGBING, LI JINGDA, GUO HONGXIANG, YIN ZUOSHAN, HONG XIAOBIN, LIN JINTONG, ZUO YONG, LI YAN, WU JIAN, XU KUN
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Sprache:chi ; eng
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ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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creator DAI YITANG
LI LANLAN
WU BINGBING
LI JINGDA
GUO HONGXIANG
YIN ZUOSHAN
HONG XIAOBIN
LIN JINTONG
ZUO YONG
LI YAN
WU JIAN
XU KUN
description The invention discloses an optical signal to noise ratio (OSNR) monitoring device and monitoring method, comprising an optical amplifier (1), a first polarization control element (2), a circulator (3), a coupler (4), a nonlinear optical element (5), an attenuator (6), a second polarization control element (7), a first power meter (8) and a second power meter (9). The invention further discloses an OSNR monitoring method using the device, comprising the following steps: optimizing the polarization control elements to obtain working conditions of the linear area of the device; describing the power transmittance ratio of a transmission end to a reflection end of the monitoring device; fitting the relation between an OSNR and an output power by using a least square method; and back-calculating the OSNR by the output power according to the relation. The device and method disclosed by the invention are suitable for high-speed optical communication system. The device and method are compared with the prior scheme, th
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The invention further discloses an OSNR monitoring method using the device, comprising the following steps: optimizing the polarization control elements to obtain working conditions of the linear area of the device; describing the power transmittance ratio of a transmission end to a reflection end of the monitoring device; fitting the relation between an OSNR and an output power by using a least square method; and back-calculating the OSNR by the output power according to the relation. The device and method disclosed by the invention are suitable for high-speed optical communication system. 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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
title Optical signal to noise ratio (OSNR) monitoring device and monitoring method
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