光学
法布里-珀罗干涉仪
材料科学
多模光纤
光纤
正交(天文学)
光纤传感器
相(物质)
光电子学
物理
波长
量子力学
作者
Kent A. Murphy,Michael F. Gunther,Ashish M. Vengsarkar,Richard O. Claus
出处
期刊:Optics Letters
[The Optical Society]
日期:1991-02-15
卷期号:16 (4): 273-273
被引量:389
摘要
We demonstrate the operation of a quadrature phase-shifted extrinsic Fabry-Perot fiber-optic sensor for the detection of the amplitude and the relative polarity of dynamically varying strain. Two laterally displaced single-mode fibers inserted within a hollow silica tube form the 90 degrees phase-shifted sensing system. A multimode fiber, placed in the tube facing the two fibers, acts as a reflector, thereby creating an air gap that acts as a Fabry-Perot cavity. A theoretical description of the sensor is given, and its operation as a dynamically varying strain sensor is described. Strain sensitivities of 5.54 degrees phase shift/microstrain cm(-1) are obtained.
科研通智能强力驱动
Strongly Powered by AbleSci AI