12 November 1984 A Balancing Technique For Optical Fibre Intensity Modulated Transducers
Author Affiliations +
Proceedings Volume 0514, 2nd Intl Conf on Optical Fiber Sensors: OFS'84; (1984); doi: 10.1117/12.945068
Event: 2nd International Conference on Optical Fiber Sensors, 1984, Stuttgart, Germany
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.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. Culshaw, J. Foley, I. P. Giles, "A Balancing Technique For Optical Fibre Intensity Modulated Transducers", Proc. SPIE 0514, 2nd Intl Conf on Optical Fiber Sensors: OFS'84, (12 November 1984); doi: 10.1117/12.945068; https://doi.org/10.1117/12.945068
PROCEEDINGS
4 PAGES


SHARE
KEYWORDS
Modulation

Signal attenuation

Sensors

Signal processing

Transducers

Bridges

Optical fibers

Back to Top