Laser & Optoelectronics Progress, Volume. 53, Issue 7, 71301(2016)
Sensitivity of Evanescent Field Sensors Based on Eccentric Core Optical Fiber
The properties of model field and evanescent field are theoretically studied and simulated using finite element method, which have a certain extent effect on the sensitivity of the fiber evanescent field sensors based on eccentric core optical fiber. The distributed sensing length of the fiber evanescent field sensors is also calculated based on the Rayleigh scattering theory. The results show that in order to obtain high sensitivity in evanescent field sensing, the eccentric distance is designed to be about 8~10 μm and the refractive index of fiber coating should be low as soon as possible. The sensing length of the fiber evanescent field sensors is estimated to be 16~160 m.
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Liu Jianxia, Xue Li, Chen Gongdai, Li Zhijun. Sensitivity of Evanescent Field Sensors Based on Eccentric Core Optical Fiber[J]. Laser & Optoelectronics Progress, 2016, 53(7): 71301
Category: Integrated Optics
Received: Dec. 17, 2015
Accepted: --
Published Online: Jul. 8, 2016
The Author Email: Jianxia Liu (fiber_ljx@126.com)