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

Journals >Photonic Sensors >Volume 1 >Issue 3 >Page 204 > Article

Photonic Sensors
Vol. 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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DOI: 10.1007/s13320-010-0001-4 Cite this Article

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 Copy Citation Text

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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.

Keywords

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

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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