We report the first demonstration of 32 distributed-feedback fiber lasers multiplexed on a single fiber. The fiber lasers, fabricated to a design developed specifically for sensor array applications, have wavelengths corresponding to 32 adjacent channels of the 100GHz C-band ITU grid. We show that the excess low frequency noise evident in some of the fiber lasers is due to external feedback caused by Rayleigh backscatter.

© 2017 Optical Society of America

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