Determination of optical fibre refractive index profiles by a near-field scanning technique
Determination of optical fibre refractive index profiles by a near-field scanning technique
A simple and rapid method is described for determining the refractive index profile of an optical fiber by observation of the near-field intensity distribution. It is shown that in many cases the presence of tunnelling leaky modes is unavoidable and that these cause a length-dependent error in the measurement. A correction factor is developed which may be applied to the measured intensity profile once the fiber length, core diameter, and numerical aperture are known. Examples are given of measurements made on both step and graded-index fibers.
255-258
Sladen, F.M.E.
d444502d-d1bd-4e85-9743-13568c170277
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Adams, M.J.
4a9df701-bc4d-492e-a54e-de6d526d3083
1976
Sladen, F.M.E.
d444502d-d1bd-4e85-9743-13568c170277
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Adams, M.J.
4a9df701-bc4d-492e-a54e-de6d526d3083
Sladen, F.M.E., Payne, D.N. and Adams, M.J.
(1976)
Determination of optical fibre refractive index profiles by a near-field scanning technique.
Applied Physics Letters, 28 (5), .
(doi:10.1063/1.88857).
Abstract
A simple and rapid method is described for determining the refractive index profile of an optical fiber by observation of the near-field intensity distribution. It is shown that in many cases the presence of tunnelling leaky modes is unavoidable and that these cause a length-dependent error in the measurement. A correction factor is developed which may be applied to the measured intensity profile once the fiber length, core diameter, and numerical aperture are known. Examples are given of measurements made on both step and graded-index fibers.
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Published date: 1976
Identifiers
Local EPrints ID: 78771
URI: http://eprints.soton.ac.uk/id/eprint/78771
ISSN: 0003-6951
PURE UUID: f590c639-b417-4ab4-89f8-bdb329897387
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 00:22
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Author:
F.M.E. Sladen
Author:
M.J. Adams
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