An experimental study on changes of speckle patterns caused by load application onto an optical fiber

概要

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In order to investigate possibility of utilizing speckle patterns for sensing application, a certain load was applied onto an optical fiber through which laser beams emitted from a laser diode are propagating, and changes in speckle patterns in the output light spot from the optical fiber were observed. As a result, when load was applied onto the optical fiber via a flat plate placed over the fiber, no significant changes were recognized in the speckle pattern. On the other hand, in the case where the optical fiber was placed so that the load application induced corrugated bending of the fiber, it was observed that the number of speckles in the pattern decreased and the diameter of the whole pattern also decreased upon load application onto the optical fiber.
一般社団法人電子情報通信学会の論文
2011-11-10