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有源波、空分复用光纤光栅传感网络
引用本文:余有龙,谭华耀. 有源波、空分复用光纤光栅传感网络[J]. 中国激光, 2002, 29(2): 131-134
作者姓名:余有龙  谭华耀
作者单位:1. 黑龙江大学光纤技术研究所,黑龙江哈尔滨,150080;香港理工大学电机工程系,香港
2. 香港理工大学电机工程系,香港
基金项目:香港研究资助局 (RGC)资助项目 (Polyu 5 12 3 97E),国家自然科学基金与中国节能投资公司联合基金的部分资助 (批准号 :6 0 1770 2 9)
摘    要:借助 1× 3光开关和可调F P滤波器对充当环形腔激光器端镜的 3× 10空、波分复用光纤光栅传感器阵列进行查询 ,用非平衡Michelson扫描干涉仪将来自传感光栅的波长漂移信息变为相移信息实现解调 ,实验证实系统的应变传感灵敏度为 1 6 817Deg με,与理论值 1 6 843Deg με非常吻合。锁定来自某一光栅的信号后 ,反馈装置保证系统具备自动追踪感测信号的能力。

关 键 词:光纤光栅  传感网络  空分复用  波分复用  环形腔光纤激光器  干涉解调  FP滤波  有源传感
收稿时间:2000-12-05

Active Spatial/Wavelength-Division Multiplexed Fiber Bragg Grating Sensor System
YU You long ,,TAM Hwayaw Research Institute of Fiber Optics,Heilongjiang University,Harbin. Active Spatial/Wavelength-Division Multiplexed Fiber Bragg Grating Sensor System[J]. Chinese Journal of Lasers, 2002, 29(2): 131-134
Authors:YU You long     TAM Hwayaw Research Institute of Fiber Optics  Heilongjiang University  Harbin
Affiliation:YU You long 1,2,TAM Hwayaw 2 1Research Institute of Fiber Optics,Heilongjiang University,Harbin 150080 2Department of Electrical Engineering,Hong Kong Polytechnic University,Hong Kong
Abstract:A spatial/wavelength division multiplexed 3×10 fiber Bragg grating sensor array, acted as the reflector of a ring cavity fiber laser, was interrogated by employing a 1×3 optical switch and a tunable F P filter. Demodulation was achieved by using an unbalanced Michelson scanning interferometer that transform the wavelength shift signal induced by the measured strain into phase shift signal. The sensor sensitivity of the system was demonstrated to be 1 6817 Deg/με, which agree with the theoretical value of 1.6843 Deg/με well. A feedback subsystem was introduced to make the system track the measuring channel automatically.
Keywords:fiber Bragg grating   sensor network   spatial division multiplexing   wavelength division multiplexing   ring cavity fiber laser   interferometric demodulation   F P filtering   active sensor
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