2x2 fused fibre null couplers with asymmetric waist cross-sections for polarization independent (<0.01 dB) switching
2x2 fused fibre null couplers with asymmetric waist cross-sections for polarization independent (<0.01 dB) switching
Polarisation independent (<0.01 dB) switching is achieved at 1.55µm in a strongly guiding, fused tapered fibre null coupler acousto-optic switch. An asymmetric waist cross-section with an intermediate degree of fusion of the fibres gives the form birefringence required to render the null coupler polarisation insensitive. The effect of the degree of fiber fusion on the acoustic wavelength of flexural waves is studied theoretically and experimentally, and precise control over the degree of fiber fusion is obtained for coupler waist cross-sectional dimensions as small as 6µm.
1671-1679
Farwell, S.G.
ed617700-b4e8-4e94-bc3c-16a9d06a7d35
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2
1998
Farwell, S.G.
ed617700-b4e8-4e94-bc3c-16a9d06a7d35
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2
Farwell, S.G., Zervas, M.N. and Laming, R.I.
(1998)
2x2 fused fibre null couplers with asymmetric waist cross-sections for polarization independent (<0.01 dB) switching.
IEEE Journal of Lightwave Technology, 16 (9), .
(doi:10.1109/50.712251).
Abstract
Polarisation independent (<0.01 dB) switching is achieved at 1.55µm in a strongly guiding, fused tapered fibre null coupler acousto-optic switch. An asymmetric waist cross-section with an intermediate degree of fusion of the fibres gives the form birefringence required to render the null coupler polarisation insensitive. The effect of the degree of fiber fusion on the acoustic wavelength of flexural waves is studied theoretically and experimentally, and precise control over the degree of fiber fusion is obtained for coupler waist cross-sectional dimensions as small as 6µm.
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Published date: 1998
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 77922
URI: http://eprints.soton.ac.uk/id/eprint/77922
ISSN: 0733-8724
PURE UUID: ce209579-2f48-4dfe-af76-8c0d372dc0b3
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:35
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Author:
S.G. Farwell
Author:
R.I. Laming
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