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余有龙, 谭华耀
光学学报,2002,29(2):132~133,-0001,():
-1年11月30日
借助1×3光开关和可调F2P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116817 DegPμε,与理论值116843 DegPμε非常吻合。锁定来自某一光栅的信号,反馈装置保证系统具备自动追踪感测信号的能力。
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, F2P 滤波, 有源传感
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70浏览
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【期刊论文】基于悬臂梁的光纤光栅线性调谐3基于悬臂梁的光纤光栅线性调谐*
余有龙, 刘治国, 董孝义, 王江
学学学报,1999,19(5):19~20,-0001,():
-1年11月30日
理论上对不同厚度的“凸”字形悬臂梁的调谐能力进行了分析, 实验中选用适当尺寸的悬臂梁, 对粘贴其上的光纤光栅的反射波长实现了线性调谐, 并观察到由于梁轴向应力的梯度分布造成的啁啾输出现象, 指出选用长度较短的光栅可以减小谱的展宽量。
光纤光栅, 线性可调, 悬臂梁, 啁啾光栅
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66浏览
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【期刊论文】Passive Temperature Compensation Technique for Fiber Bragg Grating Displacement Sensor
余有龙, Youlong Yu, Hwayaw Tam, Zhiguo Liu, and Wenghong Chung
,-0001,():
-1年11月30日
A novel fiber Bragg grating displacement sensor is introduced. Using a uniform density and thickness overlapped dual-isosceles triangular cantilever beam as strain agent, this sensor is demonstrated experimentally and theoretically to be able to compensate the wavelength-shift induced by temperature automatically. The measured sensitivity of this sensor is 0.1051nm/mm within the working range of-18, 18mm.
fiber optics, Bragg gratings, displacement measurement, sensors, compensation.,
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【期刊论文】Fiber Bragg Grating Sensor for Simultaneous Measurement of Displacement and Temperature
余有龙, Youlong Yu, Hwayaw Tam, Wenghong Chung, and Muhtesem Suleyman Demokan
,-0001,():
-1年11月30日
A new approach for measuring displacement and temperature simultaneously using a specially designed isosceles triangular cantilever beam as a strain agent is demonstrated. A fiber Bragg grating epoxied on the beam surface is experimentally demonstrated to have a temperature sensitivity of about 0.113 nm/℃ below 60℃.
optical fiber sensors, displacement measurement, temperature measurement,, fiber Bragg grating, sensitivity
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【期刊论文】Optical XOR and NXOR logic operations with erasable self-pumped phase conjugation
余有龙, Youlong Yu, Zuohong Jiang, Jie Ying and Xiaoyi Dong
,-0001,():
-1年11月30日
The phenomenon of erasable self-pumped phase conjugation (SPPC) is explained theoretically. Encoded by intensity, all-optical XOR and NXOR logic functions are performed experimentally by controlling the incident and the erasure beams of SPPC. The time response curves of both operations are shown.
self-pumped phase conjugation, optical logic operation
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