Deflection measurement using long-period grating sensor fabricated on side-hole single-mode fiber by CO2-laser

Juan Kang; Mengchao Li; Jianfeng Wang; Xinyong Dong

doi:10.1117/12.869808

9 November 2010 Deflection measurement using long-period grating sensor fabricated on side-hole single-mode fiber by CO₂-laser

Juan Kang, Mengchao Li, Jianfeng Wang, Xinyong Dong

Author Affiliations +

Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 78532E (2010) https://doi.org/10.1117/12.869808
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

In this paper, an optical Long-period fiber grating (LPG) fabricated by CO₂ laser in side-hole single-mode fiber (SHLPG) for cantilever deflection measurement was demonstrated according with LPG flexural character. resonance wavelength of SHLPG (1547.3nm) has a total blue shift of approximately -0.83nm for deflection ranging from 0 to 40mm, and a red shift of 0.74nm with deflection ranging from 0 to -40mm. The results indicated that the SHLPG owns higher deflection sensitivity than that of normal LPG and fiber Bragg grating. The deflection sensitivity coefficient of SHLPG is -0.202nm/mm. The resonance wavelength shift has a good linear with the deflection increasing. The correlative coefficient is 0.9966. Factual deflection measuring can be got with high sensitivity through SHLPG easily.

Citation Download Citation

Juan Kang, Mengchao Li, Jianfeng Wang, and Xinyong Dong "Deflection measurement using long-period grating sensor fabricated on side-hole single-mode fiber by CO₂-laser", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78532E (9 November 2010); https://doi.org/10.1117/12.869808

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