Optical sensing system with light pulses

Details Optical sensing system with light pulses Optical sensing system with light pulses

1989-04-12

1990-08-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502311, 356345, H01J 516, G01B 902

Patent

active

049470370

ABSTRACT:
Many optical sensing systems include an interferometer comprising a plurality of contiguous optical fibre sensor lengths with partially reflecting discontinuities therebetween. An inherent problem with these systems is however that the number of sensors that can be configured is limited by the pulse repetition or sensor interrogation rate. In the present system the pulse repetition rate is effectively increased without having to reduce optical fibre sensor lengths or numbers by interleaving several interrogating signals.

REFERENCES:
patent: 4653916 (1987-03-01), Henning et al.
patent: 4770535 (1988-09-01), Kim et al.
patent: 4775216 (1988-10-01), Layton

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