Double-sided polishing long period fiber grating sensors for measuring liquid refractive index

A new liquid refractive index sensor using double-sided polishing long-period fiber gratings (DSP-LPFG) is presented. The influence of residual cladding thickness on the sensitivity of measuring liquid refractive index is investigated. The proposed sensor response to external liquid refractive indic...

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Bibliographic Details
Main Authors: Chuen-Lin Tien, Tsai-Wei Lin, Hung-Yi Hsu, Li-Chieh Chen, Yu-Chung Chen, Wen-Feng Liu
Format: Conference Proceeding
Language:English
Subjects:
Fiber gratings
Fiber optical sensors
liquid refractive index
long-period fiber grating
Optical attenuators
Optical fiber polarization
Optical fiber sensors
Optical fibers
Optical losses
Optical refraction
Optical sensors
Refractive index
side-polished
Wavelength measurement
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Summary:A new liquid refractive index sensor using double-sided polishing long-period fiber gratings (DSP-LPFG) is presented. The influence of residual cladding thickness on the sensitivity of measuring liquid refractive index is investigated. The proposed sensor response to external liquid refractive indices varying in the range of n=1.330 − 1.375 has been carried out by measuring the transmission wavelength changes. Experimental results show that well-controlled polishing parameters can significantly increase the sensitivity. The sensitivity of −143.396 nm/RIU can be obtained in this study.
ISSN:2162-108X
2162-1098