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Proceedings Paper

Multibit optical sensor networking
Author(s): Anjum Pervez
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Paper Abstract

The optical fiber sensor networking problem is considered from a digital communication viewpoint. A multibit, all-optical temperature sensor design concept is presented. The sensor generates 2M codewords of length M bits (gray coded), each codeword corresponding to a specific temperature threshold within 1-2 deg accuracy. The codewords are generated serially, and therefore only a single output fiber line is required. The proposed sensor design is used in conjunction with a time division multiplexing (TDM) scheme to verify the concept of multibit sensor multiplexing and networking. In addition, sensor array design to multiplex multibit optical sensors is presented, and the trade-offs between the maximum number of sensors, system power margin, bit rates generated by the sensor arrays, and the fiber delay lines necessary for TDM are discussed. Finally, the network architectures (similar to LAN topologies) and the processes necessary at the remote receiver to recover the sensing information from each individual multibit sensor are explained.

Paper Details

Date Published: 1 August 1991
PDF: 12 pages
Proc. SPIE 1511, Fiber Optic Sensors: Engineering and Applications, (1 August 1991); doi: 10.1117/12.45995
Show Author Affiliations
Anjum Pervez, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 1511:
Fiber Optic Sensors: Engineering and Applications
Anastasius J.A. Bruinsma; Brian Culshaw, Editor(s)

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