Abstract
Specklegram in multimode fiber has successfully been used as a sensor for detecting mechanical disturbance. Speckles in a multimode pure silica grapefruit 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.
© 2008 Optical Society of America
Full Article | PDF ArticleMore Like This
Jun Li, Haiwen Cai, Jianxin Geng, Ronghui Qu, and Zujie Fang
Appl. Opt. 46(17) 3572-3578 (2007)
Eric Fujiwara, Murilo Ferreira Marques dos Santos, and Carlos Kenichi Suzuki
Appl. Opt. 56(6) 1585-1590 (2017)
Agus Muhamad Hatta, Yuliya Semenova, Qiang Wu, and Gerald Farrell
Appl. Opt. 49(3) 536-541 (2010)