Abstract

We consider polarization mixing in birefringent fibers with imposed birefringent gratings. For polarizations near the fast axis, the grating suppresses the well-known strong instability and mode mixing until a threshold power is reached, and then there is a sharp transition from linear to enhanced nonlinear behavior. The exact degree of grating birefringence is not critical.

© 1994 Optical Society of America

Interplay of grating and nonlinearity in mode coupling

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