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Proceedings Paper

A Balancing Technique For Optical Fibre Intensity Modulated Transducers
Author(s): B. Culshaw; J. Foley; I. P. Giles
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Paper Abstract

Optical fibre intensity modulated transducers are attractive in their inherent simplicity and the high sensitivity which can be achieved with relatively simple design. However, they are prone to errors due to variations in the attenuation of feed and return fibre paths, in the optical power levels launched at the receiver and in the sensitivity of the photodetectors. This paper presents a technique whereby all these sources of error may be exactly nulled using an optical analogue to a Wheatstone bridge network. Any spurious readings are then entirely due to deficiencies in the design of the transducer head itself.

Paper Details

Date Published: 12 November 1984
PDF: 4 pages
Proc. SPIE 0514, 2nd Intl Conf on Optical Fiber Sensors: OFS'84, (12 November 1984); doi: 10.1117/12.945068
Show Author Affiliations
B. Culshaw, University of Strathclyde (Scotland)
J. Foley, University College London (England)
I. P. Giles, University of Strathclyde (Scotland)


Published in SPIE Proceedings Vol. 0514:
2nd Intl Conf on Optical Fiber Sensors: OFS'84
Ralf Th. Kersten; Rainer Kist, Editor(s)

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