Pressure Sensing Characteristic of Fiber Bragg Grating Based on Diaphragm-Cantilever Beam

Yu Fei Gao; Chao Liu; Hai Wei Mu

doi:10.4028/www.scientific.net/AMM.556-562.4400

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 556-562Pressure Sensing Characteristic of Fiber Bragg...

Pressure Sensing Characteristic of Fiber Bragg Grating Based on Diaphragm-Cantilever Beam

Abstract:

In this paper, a compounding pressure sensing structure of Fiber Bragg Grating (FBG) based on circular plate diaphragm and equal strength cantilever is proposed. Based on mechanics of materials principle and mode coupling theory, a linear expression between uniform pressure and central wavelength shift of fiber grating fixed on the surface of the cantilever has been achieved. The pressure shift of fundamental modes resonance wavelength is investigated by means of simulation method. The results show that the resonance wavelengths are linearity increased with ambient pressure. The conclusion is of great aid to the application of the fiber Bragg grating.

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Periodical:

Applied Mechanics and Materials (Volumes 556-562)

Pages:

4400-4403

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.556-562.4400

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Online since:

May 2014

Authors:

Yu Fei Gao*, Chao Liu, Hai Wei Mu

Keywords:

Fiber Bragg Grating, Pressure Sensing, Transmission Spectra

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