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White-light displacement sensor incorporating signal analysis of channeled spectra

Taplin, Stephen R. and Podoleanu, Adrian Gh. and Webb, David J. and Jackson, David A. (1994) White-light displacement sensor incorporating signal analysis of channeled spectra. In: DePaula, Ramon P., ed. Fiber Optic and Laser Sensors XII. Proceedings of SPIE . SPIE, pp. 94-100. ISBN 0-8194-1616-9. (doi:10.1117/12.191823) (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) (KAR id:20067)

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/10.1117/12.191823

Abstract

We have developed a technique for distance measurement in which the spectrum from a sensing interferometer is monitored directly with the aid of a diffraction grating and a linear charge-coupled device (CCD) array. The method described is a form of white light interferometry whereby a diffraction grating disperses the composite frequencies which are then examined by a CCD array. This paper presents the experimental results obtained for a fiber Fabry-Perot version of the sensing interferometer, using a powerful pigtailed super luminescent diode. Presented also are the processing techniques used to recover the displacement. The techniques are based upon a software package designed to derive the signal frequency of the channeled spectra. The results are compared with those obtained using previously described signal processing methods. Methods of calibration are explored using reference cavities of sub-micron accuracy to allow absolute measurement.

Item Type: Book section
DOI/Identification number: 10.1117/12.191823
Uncontrolled keywords: charge-coupled devices; sensors; signal processing; diffraction gratings; interferometers; fiber optics sensors; calibration
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK8300 Optoelectronic devices. Photoelectronic devices
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: P. Ogbuji
Date Deposited: 18 Jun 2009 09:15 UTC
Last Modified: 26 Jan 2020 04:02 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/20067 (The current URI for this page, for reference purposes)
Podoleanu, Adrian Gh.: https://orcid.org/0000-0002-4899-9656
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