All-fibre SAW sensor with frequency tuning capability

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All-fibre SAW sensor with frequency tuning capability

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© The Institution of Electrical Engineers
Published

A new sensor for detecting surface acoustic waves (SAWs) is presented. The system uses single-mode optical fibres throughout, and requires only one 3 dB directional coupler. The sensor is tunable to acoustic frequencies above 8 MHz. The new system can be realised in a particularly compact form, and could form the basis of a miniature instrument.

Inspec keywords: tuning; surface acoustic wave devices; fibre optic sensors; acoustic transducers

Other keywords: above 8 MHz; directional coupler; SAW sensor; surface acoustic waves; single-mode optical fibres; frequency tuning

Subjects: Sonic and ultrasonic transducers and sensors; Fibre optics; Transduction; devices for the generation and reproduction of sound; Fibre optic sensors; Sensing devices and transducers; Acoustic wave devices

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