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Proceedings Paper

Signal-processing methods and requirements for continuous-wavelength-encoded optical sensor systems
Author(s): Douglas R. Patriquin; David H. Crowne
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Paper Abstract

Signal processing requirements and techniques for a class of optical sensors, based on continuous wavelength encoding of sensed data, are discussed. The sensors function as narrow-band transmission filters with the wavelength controlled by the sensed parameter. The signal processor must determine the wavelength of the narrow band peak in real time with an accuracy of at least 0.1 percent of full scale. The electrooptic techniques presently used to detect and process these signals are described along with the associated benefits and limitations. The results from testing these techniques are presented and compared. Several innovative techniques with the potential for reducing the size and weight of the processing elements are proposed. Results from computer simulations of the proposed techniques are presented. Sensor and signal-conditioning multiplexing methods for these sensor systems and the impact on system operation are discussed. An analysis of the signal-processing techniques with respect to throughput, accuracy, cost, weight, and impact on system operation is presented.

Paper Details

Date Published: 1 October 1990
PDF: 12 pages
Proc. SPIE 1291, Optical and Digital Gallium Arsenide Technologies for Signal Processing Applications, (1 October 1990); doi: 10.1117/12.20979
Show Author Affiliations
Douglas R. Patriquin, Simmonds Precision (United States)
David H. Crowne, Simmonds Precision (United States)

Published in SPIE Proceedings Vol. 1291:
Optical and Digital Gallium Arsenide Technologies for Signal Processing Applications
Mark P. Bendett; Daniel H. Butler; Arati Prabhakar; Andrew C. Yang, Editor(s)

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