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Length-dependent effects due to leaky modes on multimode graded-index optical fibres

Length-dependent effects due to leaky modes on multimode graded-index optical fibres
Length-dependent effects due to leaky modes on multimode graded-index optical fibres
The radiation losses of tunnelling leaky modes in graded-index optical fibres are calculated theoretically, and it is shown that the near-field intensity profile has a length dependence. Consequently measurements of the near-field intensity distribution do not give the refractive index profile directly, and a correction factor must be applied. We have investigated this factor and find that it depends only on a single normalisation parameter involving fibre length, core radius and normalised frequency. A further use of the correction factor is to determine the total power attenuation due to the loss of leaky modes.
0030-4018
204-209
Adams, M.J.
4a9df701-bc4d-492e-a54e-de6d526d3083
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Sladen, F.M.E.
d444502d-d1bd-4e85-9743-13568c170277
Adams, M.J.
4a9df701-bc4d-492e-a54e-de6d526d3083
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Sladen, F.M.E.
d444502d-d1bd-4e85-9743-13568c170277

Adams, M.J., Payne, D.N. and Sladen, F.M.E. (1976) Length-dependent effects due to leaky modes on multimode graded-index optical fibres. Optics Communications, 17 (2), 204-209. (doi:10.1016/0030-4018(76)90215-7).

Record type: Article

Abstract

The radiation losses of tunnelling leaky modes in graded-index optical fibres are calculated theoretically, and it is shown that the near-field intensity profile has a length dependence. Consequently measurements of the near-field intensity distribution do not give the refractive index profile directly, and a correction factor must be applied. We have investigated this factor and find that it depends only on a single normalisation parameter involving fibre length, core radius and normalised frequency. A further use of the correction factor is to determine the total power attenuation due to the loss of leaky modes.

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Published date: May 1976

Identifiers

Local EPrints ID: 78764
URI: http://eprints.soton.ac.uk/id/eprint/78764
ISSN: 0030-4018
PURE UUID: 2457db33-106a-4688-b205-828d2b68a53e

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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 00:22

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Contributors

Author: M.J. Adams
Author: D.N. Payne
Author: F.M.E. Sladen

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