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Brillouin gain suppression in photonic crystal fibers with random acoustically microstructured cores

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Abstract

Finite-element calculations of the Brillouin gain spectrum in photonic crystal fibers (PCFs) with cores incorporating random arrangements of regions with discrete acoustic velocities are presented. The peak Brillouin gain coefficient for PCFs with cores with an acoustic domain size of 0.26μm2 and an acoustic velocity variation of 3% was calculated to be 3.3×1012mW with a Brillouin gain spectrum FWHM of 280MHz. This corresponds to a decrease in the peak Brillouin gain coefficient of 7.4dB relative to a PCF with an acoustically homogeneous core.

© 2009 Optical Society of America

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