Sensor grating demodulation using a passively mode locked fiber laser

Martin A. Putnam; Michael L. Dennis; Jin Ung Kang; Tsung-Ein Tsai; Irl N. Duling III; E. Joseph Friebele

doi:10.1117/12.275754

6 June 1997 Sensor grating demodulation using a passively mode locked fiber laser

Martin A. Putnam, Michael L. Dennis, Jin Ung Kang, Tsung-Ein Tsai, Irl N. Duling III, E. Joseph Friebele

Proceedings Volume 3042, Smart Structures and Materials 1997: Smart Sensing, Processing, and Instrumentation; (1997) https://doi.org/10.1117/12.275754
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

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.

Citation Download Citation

Martin A. Putnam, Michael L. Dennis, Jin Ung Kang, Tsung-Ein Tsai, Irl N. Duling III, and 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); https://doi.org/10.1117/12.275754

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