Specklegram in a grapefruit fiber and its response to external mechanical disturbance in a SMS fiber structure

Yuntao Wang 1, * Haiwen Cai 1 Ronghui Qu 1 Zujie Fang 1 Emmanuel Marin 2 Jean-Pierre Meunier 2
* Corresponding author
1 SIFOM - Shanghai Institute of Optics and Fine Mechanics
2 LHC - Laboratoire Hubert Curien [Saint Etienne]
Abstract : Specklegram in multimode fiber has successfully been used as a sensor for detecting mechanical disturbance. Speckles in a multimode pure silica grape fruit fiber are observed and compared to that of a step-index multimode fiber, showing different features between them. The sensitivities to external disturbance of two kinds of fiber were measured, based on single-multiple-single mode(SMS)fiber structure. Experimental results show that the grapefruit fiber shows higher sensitivity than does the step-index multimode fiber. The transmission spectrum of the grapefruit fiber was measured as well, showing some oscillation features that are significantly different from that of a step-index multimode fiber. The experiments may provide suggestions to understand the mechanisms of light propagation in grapefruit fibers.
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Contributor : Jean-Pierre Meunier <>
Submitted on : Monday, January 26, 2009 - 6:07:57 PM
Last modification on : Wednesday, July 25, 2018 - 2:05:31 PM

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UNIV-ST-ETIENNE | LAHC | IOGS | PARISTECH

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Yuntao Wang, Haiwen Cai, Ronghui Qu, Zujie Fang, Emmanuel Marin, et al.. Specklegram in a grapefruit fiber and its response to external mechanical disturbance in a SMS fiber structure. Applied optics, Optical Society of America, 2008, 47 (20), pp.3543-3548. ⟨10.1364/AO.47.003543⟩. ⟨ujm-00356183⟩

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