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Random coupling theory of single-mode optical fibers

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3 Author(s)
Tian Feng ; Opt. Commun. Lab., Beijing Univ. of Posts & Telecommun., China ; Wu Yizun ; Ye Peida

A random coupling theory is developed for analyzing the propagation characteristics of the polarization state of light in single-mode optical fibers (including conventional and polarization maintaining fibers) under random disturbances. The basic idea is that the disturbances that a fiber suffers in practice continuously change with time and space, so time-varying coupling will occur along the fiber between two linearly polarized modes HE11 that may propagate in the fiber. A coupled-mode equation of single-mode fibers under random disturbances is derived and solved rigorously with few assumptions. A random coupled-mode equation is derived considering time and space variation. Analytic solutions are obtained and used for analyzing the effect of random birefringence, polarization dispersion, polarization fluctuation, and evolution of the degree of polarization in single-mode fibers and for characterizing fiber properties

Published in:

Journal of Lightwave Technology  (Volume:8 ,  Issue: 8 )