15 September 1995 Multiplexed low-coherence optical fiber sensor system employing threshold peak detection
Author Affiliations +
Proceedings Volume 2507, Distributed and Multiplexed Fiber Optic Sensors V; (1995) https://doi.org/10.1117/12.219624
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany
Abstract
A multiplexed, low coherence, dual LED, multimode fiber sensor processing system, for measurement of optical path changes generated within Fabry-Perot field sensors, has been constructed and tested. Differences between reference and field sensor coherence profile peak fringe positions were measured using simple signal thresholding techniques and a 10-channel timer-counter board, triggered and stopped by zero-crossover detection signals. S/N ratio at APD detectors allowed measurement update rates in excess of 40 Hz and resolution better than 1/100th fringe. Range to resolution capability was in excess of 12 X 103:1.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alan J. Cormier, Alan J. Cormier, Robert E. Renton, Robert E. Renton, Gregorios Gregoriou, Gregorios Gregoriou, } "Multiplexed low-coherence optical fiber sensor system employing threshold peak detection", Proc. SPIE 2507, Distributed and Multiplexed Fiber Optic Sensors V, (15 September 1995); doi: 10.1117/12.219624; https://doi.org/10.1117/12.219624
PROCEEDINGS
12 PAGES


SHARE
Back to Top