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
收藏
页码：945 / 947
页数：3
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