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Proceedings Paper

Sensor grating demodulation using a passively mode locked fiber laser
Author(s): Martin A. Putnam; Michael L. Dennis; Jin Ung Kang; Tsung-Ein Tsai; Irl N. Duling; E. Joseph Friebele
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Paper 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.

Paper Details

Date Published: 6 June 1997
PDF: 6 pages
Proc. SPIE 3042, Smart Structures and Materials 1997: Smart Sensing, Processing, and Instrumentation, (6 June 1997); doi: 10.1117/12.275754
Show Author Affiliations
Martin A. Putnam, Naval Research Lab. (United States)
Michael L. Dennis, Naval Research Lab. (United States)
Jin Ung Kang, Naval Research Lab. (United States)
Tsung-Ein Tsai, Naval Research Lab. (United States)
Irl N. Duling, Naval Research Lab. (United States)
E. Joseph Friebele, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 3042:
Smart Structures and Materials 1997: Smart Sensing, Processing, and Instrumentation
Richard O. Claus, Editor(s)

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