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A common path fibre optic based interferometric displacement sensor with enhanced range

Jackson, David A., Cernat, Ramona, Podoleanu, Adrian G.H. (2012) A common path fibre optic based interferometric displacement sensor with enhanced range. In: SPIE Proceedings Series. 22nd International Conference on Optical Fiber Sensors. 8421. Spie-Int Soc Optical Engineering ISBN 978-0-8194-9103-9. (doi:10.1117/12.968587) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1117/12.968587

Abstract

The transfer functions of single and dual interferometric cavities were measured with 1300nm high power, tuneable fibre laser with a coherence length of 20mm. The interferrogram of the dual cavity is complex. The positions of the surfaces in the cavities were determined using Fast Fourier transforms. A feature of the dual cavity is an increase in the 'effective' coherence length of the source, illuminating a simple common path interferometer. A 4*1 optical switch was incorporated with the laser allowing near simultaneous data to be recorded from up to 4 probes. A potential application for a dual cavity probe is discussed. © 2012 SPIE.

Item Type: Conference or workshop item (Proceeding)
DOI/Identification number: 10.1117/12.968587
Uncontrolled keywords: Distance measurement; Dual cavity Interferometers; Enhanced coherence length; FFT; Tuneable fibre laser
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC355 Optics
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Giles Tarver
Date Deposited: 16 Jul 2015 10:48 UTC
Last Modified: 29 May 2019 14:48 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49363 (The current URI for this page, for reference purposes)
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