Optical Sensing Based on Light Coupling Between Two Parallel Long-Period Fiber Gratings

Kin Seng CHIANG; Yunqi LIU; Qing LIU; Yunjiang RAO

doi:doi:10.1007/s13320-010-0001-4

Photonic Sensors, 2011, 1 (3): 204, Published Online: Oct. 24, 2013

Optical Sensing Based on Light Coupling Between Two Parallel Long-Period Fiber Gratings

Kin Seng CHIANG ^1,2,*Yunqi LIU ^1,3Qing LIU ¹Yunjiang RAO ²

Author Affiliations

¹ Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China

² Key Laboratory of Optical Fiber Sensing & Communications (Ministry of Education), University of Electronic Science and Technology of China, Chengdu, 611731, China

³ Key Lab of Special Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, Shanghai, 200072, China

Long-period fiber grating optical fiber sensor refractive-index sensor displacement sensor intensity-based sensor

Abstract

A new optical intensity-based sensing mechanism for the measurement of refractive index and minute displacement is proposed in this paper, which is based on modifying the amount of light coupled between two parallel long-period fiber gratings. The characteristics of this sensing mechanism with experiments and simulation results are demonstrated.

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Kin Seng CHIANG, Yunqi LIU, Qing LIU, Yunjiang RAO. Optical Sensing Based on Light Coupling Between Two Parallel Long-Period Fiber Gratings[J]. Photonic Sensors, 2011, 1(3): 204.

Optical Sensing Based on Light Coupling Between Two Parallel Long-Period Fiber Gratings

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