Model of an axially strained weakly guiding optical fiber modal pattern

Claudio Oliveira Egalon; Robert S. Rogowski

doi:10.1117/12.56175

1 June 1992 Model of an axially strained weakly guiding optical fiber modal pattern

Claudio Oliveira Egalon, Robert S. Rogowski

Author Affiliations +

Optical Engineering, Vol. 31, Issue 6, (June 1992). https://doi.org/10.1117/12.56175

Abstract

Axial strain can be determined by monitoring the modal pattern variation of an optical fiber. The results of a numerical model developed to calculate the modal pattern variation at the end of a weakly guiding optical fiber under axial strain is presented. 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 modal phase term β_inz of the fields and the fiber output pattern are also modified. For multimode fibers, very complicated patterns result. The predicted patterns are presented and an expression for the phase variation with strain is derived

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Claudio Oliveira Egalon and Robert S. Rogowski "Model of an axially strained weakly guiding optical fiber modal pattern," Optical Engineering 31(6), (1 June 1992). https://doi.org/10.1117/12.56175

Published: 1 June 1992

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