Simultaneous channel and OSNR monitoring using a polarization-selective modulator and an LED

被引：1

作者：

Yang, CL ^{[1
]}

Lee, SL ^{[1
]}

Tsao, HW ^{[1
]}

Wu, J ^{[1
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2004年 / 16卷 / 03期

关键词：

channel monitoring; fiber networks; optical performance monitoring; optical signal-to-noise-ratio (OSNR) monitoring; wavelength-division multiplexing (WDM);

D O I：

10.1109/LPT.2004.823756

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A compact module including a polarization-selective electrooptic modulator and a light-emitting diode (LED) sensor is utilized for optical signal-to-noise-ratio (OSNR) monitoring and channel recognition. The modulator acts as a polarizer and provides signal dithering to improve the detection sensitivity, while the LED is used as a channel sensor. The channel sensor can monitor a wide wavelength range that is rapidly adjustable and can have much relaxed tolerance on temperature control. The combination of a polarization controller/rotator and the polarized modulator can accurately measure the OSNR between 5 and 35 dB with an error less than 0.5 dB.

引用

页码：945 / 947

页数：3

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