High-sensitivity optical time-domain reflectometry based on Brillouin dynamic gratings in polarization maintaining fibers

초록

A high-sensitivity optical time-domain reflectometry based on Brillouin dynamic grating (BDG) is proposed and experimentally demonstrated in polarization-maintaining fibers, where a single-end access to a fiber under test is applied with co-propagation of pump and probe pulses for the operation of BDG. Distributed measurements of the BDG spectra are presented with 80 cm spatial resolution in 935 m range, showing strain and temperature sensitivities of 1.37 MHz/mu epsilon and -57.48 MHz/degrees C, respectively. (c) 2012 Optical Society of America

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