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

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

doi:10.1007/s13320-010-0001-4

Photonic Sensors, Volume. 1, Issue 3, 204(2011)

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

Kin Seng CHIANG^1,2、*, Yunqi LIU^1,3, Qing LIU¹, and Yunjiang RAO²

Author Affiliations

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

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

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

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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.

Keywords

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

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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

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Paper Information

Category: Regular

Received: Aug. 3, 2010

Accepted: Aug. 30, 2010

Published Online: Oct. 24, 2013

The Author Email: CHIANG Kin Seng (eeksc@cityu.edu.hk)

DOI:10.1007/s13320-010-0001-4

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology