Proceedings PaperOptical Fibre Distributed Sensors And Sensor Networks
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The paper reviews properties of distributed optical fibre sensors and techniques for passive multiplexing of multiple sensors on to a single optical fibre distribution network. A range of topologies for optical fibre networks associated with sensor multiplexing are discussed together with their limitations and advantages. These are then related to the modulation schemes of the light source and associated signal processing. The discussion covers pulse and FM schemes, sub-carrier modulation and synthetic pulse concepts.