Twist characteristics of the ultraviolet-written long-period fiber gratings

Zijia Zhang; Wenkang Shi; Kan Gao; Zujie Fang

Chinese Optics Letters, Volume. 2, Issue 10, 10565(2004)

Zijia Zhang¹, Wenkang Shi¹, Kan Gao², and Zujie Fang²

Author Affiliations

¹Department of Information Measurement Technology and Instrument, Shanghai Jiaotong University, Shanghai 200030

²Lab of Information Optics, Shanghai Institute of Optics and Fine Mechanics, China Academy of Sciences, Shanghai 201800

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Twist characteristics of the ultraviolet-written long period fiber gratings (UV-LPFGs) are investigated in this paper. It was found experimentally that the resonance wavelength of the UV-LPFG shifts to short side proportional to square of the torsion rate, when it is twisted in both directions of clockwise and counter-clockwise, which is different from that of LPFGs written by CO2 lasers, but similar with that of the corrugated LPFGs. The phenomena can be explained by mechanisms of static compression in twisting and index change caused by photo-elastic effect.

Keywords

060.2340 060.2370 060.2310 fiber optics fiber optics components fiber optics sensors

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Zijia Zhang, Wenkang Shi, Kan Gao, Zujie Fang. Twist characteristics of the ultraviolet-written long-period fiber gratings[J]. Chinese Optics Letters, 2004, 2(10): 10565

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Paper Information

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Received: May. 9, 2004

Accepted: --

Published Online: Jun. 6, 2006

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Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology