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 ›› 2010, Vol. 1 ›› Issue (3) : 204 -209. DOI: 10.1007/s13320-010-0001-4

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Optical sensing based on light coupling between two parallel long-period fiber gratings

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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

Long-period fiber grating / optical fiber sensor / refractive-index sensor / displacement sensor / intensity-based 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. Photonic Sensors, 2010, 1(3): 204-209 DOI:10.1007/s13320-010-0001-4

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