Abstract

Selected perturbation effects on polarization mode dispersion (PMD) in highly birefringent (HB) fibers are reported. In particular, simultaneous twist and longitudinal strain effects on PMD in HB fibers have been investigated. External twist has been found to modify both modal birefringence and differential group delay (DGD) in HB fibers, and in particular to influence the range of DGD changes under longitudinal strain. These results suggest a great potential for a perspective all fiber variable-delay PMD compensator.

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