Determination of core diameter and refractive-index difference of single-mode fibres by observation of the far-field pattern


Gambling, W.A., Payne, D.N., Matsumura, H. and Dyott, R.B. (1976) Determination of core diameter and refractive-index difference of single-mode fibres by observation of the far-field pattern. Microwaves, Optics and Acoustics, 1, (1), 13-17. (doi:10.1049/ij-moa:19760002 ).

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Description/Abstract

A method is described for determining unambiguously, from the far-field pattern of single-mode fibres, the core diameter and the refractive-index difference between core and cladding. It involves measurements only of the half-power width of the main lobe and the width of the first minimum. Universal curves are presented that can be used with single-mode fibres or any fibre operating in the single-mode regime. Independent determinations of core diameter over the range 4-8µm by an etching technique are in excellent agreement with those obtained from the far-field pattern.

Item Type: Article
ISSNs: 0308-6976 (print)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 78759
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 18:59
URI: http://eprints.soton.ac.uk/id/eprint/78759

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