Abstract
In this work, we report on the experimental observation of isotropic polarization modulational instability processes in various types of conventional normally dispersive telecom fibers. In particular, dispersion-shifted fibers, highly nonlinear fibers, spun fibers, and dispersion-compensating fibers are tested, and all provide polarization modulational instabilities under high-power ns pumping around 1.55 μm. This study reveals that the high quality of modern telecom fibers associated with their manufacturing process based on a fast spinning of the perform during the drawing stage results in a very low level of birefringence, which allows for the emergence of polarization modulation instability in commonly used optical fibers.
Published Version
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