Title :
Improvement to the chirped-pulsed frequency modulation (C-PFM) technique for the multiplexing of fiber optic Bragg sensor arrays
Author :
Breglio, G. ; Irace, A. ; Cusano, A. ; Cutolo, A. ; Pascazio, V.
Author_Institution :
Dip. di Ingegneria Elettronica e delle Telecomunicazioni, Napoli, Italy
Abstract :
We show numerical simulations in order to increase the multiplexing capability of a multipoint fiber Bragg grating (FBG) sensor network. We base the new approach on the possibility of exploiting the chirped-pulsed frequency modulation technique (C-PFM). This technique, extensively used in radar applications, is based on the amplitude modulation of the emitted signal (pulsed) by a chirped frequency signal and on the demodulation of the reflected signal by means of adaptive filter. Last year, we have worked to improve the performances of such approach.
Keywords :
Bragg gratings; adaptive filters; chirp modulation; demodulation; fibre optic sensors; multiplexing equipment; pulse frequency modulation; adaptive filter; amplitude modulation; chirped frequency signal; chirped-pulsed frequency modulation technique; emitted signal; fiber optic Bragg sensor array; multiplexing capability; multipoint fiber Bragg grating sensor network; signal demodulation; Bragg gratings; Chirp; Fiber gratings; Frequency modulation; Numerical simulation; Optical arrays; Optical fiber sensors; Optical fibers; Radar applications; Sensor arrays;
Conference_Titel :
Sensors, 2003. Proceedings of IEEE
Print_ISBN :
0-7803-8133-5
DOI :
10.1109/ICSENS.2003.1278898