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Polarisation in fused single mode fibre couplers

Polarisation in fused single mode fibre couplers
Polarisation in fused single mode fibre couplers
The first polarisation beam splitter based on a single-mode fused-taper coupler has been recently demonstrated. In the device it was shown that the frequency response of the coupling of unpolarised light exhibits a modulated oscillatory behaviour. The modulation occurs because the coupling strengths of x- and y-polarised light are slightly different, resulting in different beat lengths for the two polarisations. Potentially there are many important applications which can exploit this effect. These include wavelength filters, multiplexers, modulators, and wavelength tuneable couplers. The ease and simplicity of fabrication of the fused coupler is an added advantage when considering such applications. In this paper we present further results which demonstrate that the polarisation splitting ability arises predominantly from geometrical birefringence in the coupling region. This conclusion is supported by a detailed analysis of the birefringence which is in good agreement with our experimental measurements.
Payne, F.
ff360718-3dd8-46c0-9623-5e052e6dd512
Hussey, C.D.
6360ed38-f77f-4bf2-bd9d-ee2460e0ba70
Yataki, M.S.
9164ae1d-1761-478b-94a3-ead9d75eade8
Payne, F.
ff360718-3dd8-46c0-9623-5e052e6dd512
Hussey, C.D.
6360ed38-f77f-4bf2-bd9d-ee2460e0ba70
Yataki, M.S.
9164ae1d-1761-478b-94a3-ead9d75eade8

Payne, F., Hussey, C.D. and Yataki, M.S. (1985) Polarisation in fused single mode fibre couplers. ECOC: 5th European Conference on Optical Communication, , Venice, Italy. 01 Oct 1985.

Record type: Conference or Workshop Item (Paper)

Abstract

The first polarisation beam splitter based on a single-mode fused-taper coupler has been recently demonstrated. In the device it was shown that the frequency response of the coupling of unpolarised light exhibits a modulated oscillatory behaviour. The modulation occurs because the coupling strengths of x- and y-polarised light are slightly different, resulting in different beat lengths for the two polarisations. Potentially there are many important applications which can exploit this effect. These include wavelength filters, multiplexers, modulators, and wavelength tuneable couplers. The ease and simplicity of fabrication of the fused coupler is an added advantage when considering such applications. In this paper we present further results which demonstrate that the polarisation splitting ability arises predominantly from geometrical birefringence in the coupling region. This conclusion is supported by a detailed analysis of the birefringence which is in good agreement with our experimental measurements.

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Published date: 1985
Venue - Dates: ECOC: 5th European Conference on Optical Communication, , Venice, Italy, 1985-10-01 - 1985-10-01

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Local EPrints ID: 77679
URI: http://eprints.soton.ac.uk/id/eprint/77679
PURE UUID: d2e3afbe-d830-4b87-9eb9-c053ada6cecb

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Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 23:58

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Contributors

Author: F. Payne
Author: C.D. Hussey
Author: M.S. Yataki

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