Application of core-ring-intensity-ratio to fiber speckle-hologram sensing

Shizhuo Yin; Cheng Lu; Francis T. S. Yu

doi:10.1117/12.131209

30 October 1992 Application of core-ring-intensity-ratio to fiber speckle-hologram sensing

Shizhuo Yin, Cheng Lu, Francis T. S. Yu

Proceedings Volume 1812, Optical Computing and Neural Networks; (1992) https://doi.org/10.1117/12.131209
Event: International Symposium on Optoelectronics in Computers, Communications, and Control, 1992, Hsinchu, Taiwan

Abstract

A fiber speckle-hologram is formed by two coherent light fields, in which a speckle field emerging from a multimode fiber combines with a convergent reference beam. When the speckle-hologram is illuminated by the same speckle field from the fiber, a high intensity correlation peak is reconstructed. If the fiber is subjected to some status changes, the correlation peak gradually decreases and disappears. The main objective of this paper is to use a `core-ring-intensity-ratio' technique to analyze the correlation peak so the fiber status changes can be determined. An experimental demonstration to confirm this relationship is also given.

Citation Download Citation

Shizhuo Yin, Cheng Lu, and Francis T. S. Yu "Application of core-ring-intensity-ratio to fiber speckle-hologram sensing", Proc. SPIE 1812, Optical Computing and Neural Networks, (30 October 1992); https://doi.org/10.1117/12.131209

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