Progress Towards A Low Phase Noise Source For Fibre Optic Sensors

J. P. Dakin; P. B. Withers

doi:10.1117/12.963609

6 October 1986 Progress Towards A Low Phase Noise Source For Fibre Optic Sensors

J. P. Dakin, P. B. Withers

Author Affiliations +

Proceedings Volume 0630, Fibre Optics '86; (1986) https://doi.org/10.1117/12.963609
Event: Sira/Fibre Optics '86, 1986, London, United Kingdom

Abstract

The paper describes a technique for minimising the retro-reflections from pulsed-reflectometric optical fibre sensors which may return into a single mode semiconductor laser source. The reported system is pulsed using a Bragg cell, whose drive signal is adjusted to ensure that it does not diffract when light returns from the sensor thereby preventing re-entry into the laser. Using this technique, together with feedback control of the laser drive current, spectral purity and low phase noise of the source can be maintained.

Citation Download Citation

J. P. Dakin and P. B. Withers "Progress Towards A Low Phase Noise Source For Fibre Optic Sensors", Proc. SPIE 0630, Fibre Optics '86, (6 October 1986); https://doi.org/10.1117/12.963609

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