Airflow detection system using fiber optics

Details Airflow detection system using fiber optics Airflow detection system using fiber optics

1984-10-29

1987-01-27

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250231P, 73702, 7386121, H01J 514, G01D 530, G01L 1100, G01F 166

Patent

active

046395938

ABSTRACT:
An airflow detection system comprising a light source for generating an optical signal that is propagated in an optical guide having a plurality of sensors responsive to the presence of airflow, each of which modulates the intensity of the optical signal at a frequency characteristic of that sensor such that a detection apparatus can receive the optical signal and identify activated sensors using frequency domain multiplexing techniques.

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Gottlieb, M. and Brandt, G. M., "Temperature Sensing in Optical Fibers Using Cladding and Jacket Loss Effects", Applied Optics, vol. 20, No. 22, Nov. 15, 1981, pp. 3867-3873.
Korth, H., "Integrated Optical Force and Stress Sensor", IBM Disclosure Bulletin, vol. 24, No. 2, Jul. 1981, pp. 893-894.

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