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Proceedings Paper

Long-period grating fabricated using resistive filament heating
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Paper Abstract

We fabricate and demonstrate a long-period grating (LPG) by periodically tapering a section of standard single-mode fiber using resistive filament heating. The obtained LPG has a large peak transmission attenuation of -30.31 dB with only 22 periods in a 1.0-cm long optical fiber. Such a LPG exhibits unique characteristics for sensing applications. The bending and strain sensitivities are 1.74 nm•m and 1.11 pm/με, respectively. The polarization dependent loss is large, up to 11.65dB, caused by asymmetric index profile in the cross section of the tapered LPG.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70044K (16 May 2008); doi: 10.1117/12.786108
Show Author Affiliations
Li-Yang Shao, Hong Kong Polytechnic Univ. (Hong Kong China)
Zhejiang Univ. (China)
Jian Zhao, Hong Kong Polytechnic Univ. (Hong Kong China)
Xinyong Dong, Hong Kong Polytechnic Univ. (Hong Kong China)
H. Y. Tam, Hong Kong Polytechnic Univ. (Hong Kong China)
C. Lu, Hong Kong Polytechnic Univ. (Hong Kong China)
Sailing He, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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