Grating sensor array demodulation by use of a passively mode-locked fiber laser
- 1 September 1997
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 22 (17) , 1362-1364
- https://doi.org/10.1364/ol.22.001362
Abstract
A fiber Bragg grating sensor array is interrogated by use of a passively mode-locked fiber laser source. A novel demodulation scheme that uses highly dispersive fiber to convert the grating wavelength shift to a temporal shift in the arrival time of the reflected pulses is demonstrated. The source bandwidth of permits interrogation of many-grating arrays, and the demodulation technique permits fast sensing of large strains.
Keywords
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