Axial strain sensitivity of single-mode optical fibers (exact solution)

Claudio Oliveira Egalon; Robert S. Rogowski

doi:10.1117/12.147984

12 July 1993 Axial strain sensitivity of single-mode optical fibers (exact solution)

Claudio Oliveira Egalon, Robert S. Rogowski

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Proceedings Volume 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation; (1993) https://doi.org/10.1117/12.147984
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

Abstract

Axial strain may be determined by monitoring the phase shift of a single mode optical fiber. Whenever an optical fiber is under stress, the optical path length, the index of refraction, and the propagation constants of each fiber mode change. In consequence, the phase term, (beta) (Zeta) , is also modified. In this paper, a relationship for the phase shift, due to axial strain, of the hybrid modes HE_1n and EH_1n is presented using the exact field solution. This relation is applied to single mode fibers in order to determine phase sensitivity characteristics.

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Claudio Oliveira Egalon and Robert S. Rogowski "Axial strain sensitivity of single-mode optical fibers (exact solution)", Proc. SPIE 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation, (12 July 1993); https://doi.org/10.1117/12.147984

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KEYWORDS

Phase shifts

Refractive index

Optical fibers

Single mode fibers

Cladding

Fiber optics sensors

Information operations

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