Grating sensor array demodulation by use of a passively mode-locked fiber laser.
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 >85 nm permits interrogation of many-grating arrays, and the demodulation technique permits fast sensing of large strains.
Dennis
M L
ML
Putnam
M A
MA
Kang
J U
JU
Tsai
T E
TE
Duling Iii
I N
IN
Friebele
E J
EJ