Title :
Double-Parameters Optical Fiber Sensor Based on Spherical Structure and Multimode Fiber
Author :
Jun Su ; Zhengrong Tong ; Ye Cao ; Panpan Luan
Author_Institution :
Tianjin Key Lab. of Film Electron. & Commun. Devices, Tianjin Univ. of Technol., Tianjin, China
Abstract :
A novel double-parameters optical fiber sensor based on spherical structure and multimode fiber has been proposed and experimentally demonstrated. The output signal is a series of interference superposition, external parameters can be measured by monitoring the spectral characteristics of interference dips. The interesting properties of the sensor include good operation linearity and high sensitivities. The sensitivities of temperature and refractive index can reach up to 0.131 nm/°C and 111.14 nm/RIU, respectively. Simultaneous measurement of temperature and refractive index can be realized according to the different spectral responses.
Keywords :
fibre optic sensors; light interference; optical fibre testing; refractive index; refractive index measurement; temperature measurement; double-parameter optical fiber sensor; interference superposition; multimode fiber; refractive index measurement; spectral characteristic; spherical structure; temperature measurement; Interference; Optical fiber sensors; Optical fibers; Refractive index; Sensitivity; Temperature measurement; Temperature sensors; Double-parameters; Optical sensor; multimode fiber; optical sensor; spherical structure;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2377015
