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An assessment of the spatial-filtering technique for the measurement of refractive-index profiles in optical fibre preforms

Sasaki, I. and Payne, D.N. (1981) An assessment of the spatial-filtering technique for the measurement of refractive-index profiles in optical fibre preforms At IEE Colloquium on Test Equipment for Optical Fibre Communication Systems, United Kingdom.

Record type: Conference or Workshop Item (Paper)

Abstract

The performance of optical transmission systems is strongly dependent on the details of the fibre refractive-index profile. In previous papers we have shown that non-destructive measurements performed on both single-mode and multimode fibre preforms a spatial filtering technique can reveal the index profile with remarkable accuracy and resolution. The method involves imaging of the transversely-illuminated preform by means of a high-quality lens and modulating the transmitted light in the lens focal plane with any of a number of types of spatial filter. With the aid of a small photodetector placed in the image plane it is possible to isolate individual rays in turn and to determine their deflection as they traverse the preform. The index profile is reconstructed from this deflection data by performing an integral transform

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Published date: 28 May 1981
Additional Information: Digest no. 1981/51
Venue - Dates: IEE Colloquium on Test Equipment for Optical Fibre Communication Systems, United Kingdom, 1981-05-28

Identifiers

Local EPrints ID: 77713
URI: http://eprints.soton.ac.uk/id/eprint/77713
PURE UUID: 9966a685-08c6-42d7-b03f-555157883465

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:30

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Contributors

Author: I. Sasaki
Author: D.N. Payne

University divisions

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