Abstract

A long-cavity, passively mode-locked erbium fiber laser operated in the square-pulse regime is demonstrated as a useful light source for interrogating fiber Bragg grating arrays. Output pulses with 4-W peak-power, 10-ns pulse widths, and bandwidths greater than 60 nm were used successfully to interrogate 2% fiber Bragg gratings.

© 1998 Optical Society of America

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