Ofs Fitel, LLC

Kyle R Bedard

Xiaoguang Sun

Jie Li

Man Fei Yan

Robert S Dyer

Disclosed herein is a method comprising injecting light of a first wavelength &#x3bb;into a wavelength division multiplexer; injecting light of a second wavelength &#x3bb;into the wavelength division multiplexer; combining the light of the first wavelength &#x3bb;and the light of the second wavelength &#x3bb;in the wavelength division multiplexer to produce light of a third wavelength &#x3bb;; and reflecting the light of the third wavelength &#x3bb;in a dual-Brillouin peak optical fiber that is in communication with the wavelength divisional multiplexer; wherein the dual-Brillouin peak optical fiber has at least two Brillouin peaks, such that an amplitude Aof at least one of said Brillouin peaks is within 50% to 150% of an amplitude Aof another Brillouin peak 0.5A2&#x2264;A&#x2264;1.5A; wherein the dual-Brillouin peak optical fiber generates a Brillouin dynamic grating that reflects an improved back-reflected Brillouin signal of the combined light.

Brillouin dynamic grating generation using dual-Brillouin-peak optical fiber

Disclosed herein is an optical fiber comprising a plurality of dopant concentration profiles in a core of the optical fiber; where the first dopant concentration and the second dopant concentration are each varied in a stepwise manner and wherein a ratio of the first dopant concentration to the second dopant concentration is operative to result in an interaction of a fundamental optical mode at a given wavelength with a plurality of acoustic modes thereby increasing a ratio of Brillouin Scattering intensity ratio of secondary, tertiary or quarternary peak relative to a Brillouin Scattering intensity of a primary peak to be greater than 0.4 in a Brillouin Scattering spectrum.

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Warren, MA, United States of America

Kyle R Bedard