中国激光, 1998, 25 (8): 703, 网络出版: 2006-10-18
激光随机位相噪声对光纤传感系统的影响
Effect of Laser Random Phase Noise on the Fiber-optic Sensor System
摘要
详细分析计算了 n路并行传感器系统的输出功率谱, 发现系统的噪声主要由激光器的随机位相噪声所决定。噪声级主要由激光相干时间 Tc决定。理论计算与实验结果完全一致。
Abstract
The output power spectrum of a sensor system with n-sensors arranged in parallel has been analyzed theoretically and calculated in detail. The calculated result shows that the noise of the sensors system mainly came from laser random phase noise and the noise level was mainly decided by the coherence time of the laser diode. The theoretical calculation agrees with our observation very well.
参考文献
[1] Wentwarth R. H.. Theoretical noise performance of coherence-multiplexed interferometric sensors. J. Lightwave Technol., 1989, 7(6): 941～956
[2] Xiao-qun Zhou, Koichi Ikyama, Ken-ichi Hayashi. Effect of laser phase-induced intensity noise on multiplexed fiber-optic sensor system using optical loop with frequency shifter. IEICE Transactions of Electronics, 1996(3): 437～445
周小群, 吴哲夫, 陈抗生, 饭山宏一. 激光随机位相噪声对光纤传感系统的影响[J]. 中国激光, 1998, 25(8): 703. 周小群, 吴哲夫, 陈抗生, 饭山宏一. Effect of Laser Random Phase Noise on the Fiber-optic Sensor System[J]. Chinese Journal of Lasers, 1998, 25(8): 703.
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