6 June 1997 Sensor grating demodulation using a passively mode locked fiber laser
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Abstract
A fiber Bragg grating sensor array is interrogated using a broad bandwidth passively mode locked fiber laser source. A novel demodulation scheme is demonstrated using highly dispersive fiber to convert the grating wavelength shift to a temporal shift in the arrival time of the reflected pulses. The mode locked fiber laser was then modified and operated in the square pulse regime, where 4 W, 10 ns pulses with bandwidths greater than 60 nm were used successfully to illuminate 2% fiber Bragg gratings.
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Martin A. Putnam, Michael L. Dennis, Jin Ung Kang, Tsung-Ein Tsai, Irl N. Duling, E. Joseph Friebele, "Sensor grating demodulation using a passively mode locked fiber laser", Proc. SPIE 3042, Smart Structures and Materials 1997: Smart Sensing, Processing, and Instrumentation, (6 June 1997); doi: 10.1117/12.275754; https://doi.org/10.1117/12.275754
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