1 February 1991 Predetection correlation in a spread-spectrum multiplexing system for fiber optic interferometers
Author Affiliations +
Proceedings Volume 1367, Fiber Optic and Laser Sensors VIII; (1991) https://doi.org/10.1117/12.24761
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States
A novel spread spectrum technique is reported for passive multiplexing of interferometric optical fiber sensors. The technique relies on digital spread spectrum modulation of an optical source, and the use of correlation techniques to distinguish signals arriving from specified sensors in the network. The unique feature of the system is that correlation is achieved by the use of an integrated optic modulator, prior to optical detection. Pre-detection correlation exploits the high bandwidth of integrated optic devices, and enables the use of low bandwidth photodetectors and other (electrical) post-detection components.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hamed S. Al-Raweshidy, Hamed S. Al-Raweshidy, Deepak G. Uttamchandani, Deepak G. Uttamchandani, } "Predetection correlation in a spread-spectrum multiplexing system for fiber optic interferometers", Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, (1 February 1991); doi: 10.1117/12.24761; https://doi.org/10.1117/12.24761


Interferometric fiber optic sensors for manned space stations
Proceedings of SPIE (September 29 1994)
Optical Fiber Point Temperature Sensor
Proceedings of SPIE (March 22 1988)
Multiplexed fiber optic sensors
Proceedings of SPIE (March 04 1993)

Back to Top