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Investigation of devices based on coupling between unclad optical fibres

Investigation of devices based on coupling between unclad optical fibres
Investigation of devices based on coupling between unclad optical fibres
Two important optical coupling devices, the directional coupler and the star coupler (for use in the optical data bus), are investigated making use of the principle of coupling between close parallel unclad optical fibres. A theoretical treatment is given which suggest that very high coupling efficiencies should be available in devices using this principle. Measurements made on test couplers confirm this and show also that the devices have low insertion loss (less than 0.5dB for directional coupler). A method of manufacture which involves the shrinking of a small bore tube around the fibres over the desired coupling length is also suggested.
University of Southampton
Tonge, T.J.
d63330d8-47fb-478f-9958-034731fed18a
Tonge, T.J.
d63330d8-47fb-478f-9958-034731fed18a

Tonge, T.J. (1977) Investigation of devices based on coupling between unclad optical fibres Southampton, GB. University of Southampton

Record type: Monograph (Project Report)

Abstract

Two important optical coupling devices, the directional coupler and the star coupler (for use in the optical data bus), are investigated making use of the principle of coupling between close parallel unclad optical fibres. A theoretical treatment is given which suggest that very high coupling efficiencies should be available in devices using this principle. Measurements made on test couplers confirm this and show also that the devices have low insertion loss (less than 0.5dB for directional coupler). A method of manufacture which involves the shrinking of a small bore tube around the fibres over the desired coupling length is also suggested.

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More information

Published date: May 1977
Additional Information: Report submitted for BSc Hons Physical Electronics, supervisor: W.A.Gambling

Identifiers

Local EPrints ID: 398880
URI: https://eprints.soton.ac.uk/id/eprint/398880
PURE UUID: 5b34b476-1a5b-452e-b039-f242aa060f9b

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Date deposited: 03 Aug 2016 15:45
Last modified: 17 Jul 2017 18:26

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