Twin-core fibre erbium-doped channel equalizer
Twin-core fibre erbium-doped channel equalizer
A passive channel equalizer using a twin-core EDFA is studied in detail. It relies on the spatial separation of the different channels provided by the twin-core geometry and the power-dependent differential gain saturation given by the erbium ions. The amount of channel equalization depends on the fiber geometry parameters, as well as the optical parameters and relative channel power. In the two-channel case, gain saturation limits the useful channel input powers into the range of ~ -20 dBm to -0 dBm. Channel equalization rates in excess of -0.4 dB per dB of input-power imbalance are predicted. When used in cascade, twin-core EDFAs are shown to provide not only efficient channel-power stabilization, but also self-healing against additional channel losses.
721-731
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2
1995
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2
Zervas, M.N. and Laming, R.I.
(1995)
Twin-core fibre erbium-doped channel equalizer.
IEEE Journal of Lightwave Technology, 13 (5), .
Abstract
A passive channel equalizer using a twin-core EDFA is studied in detail. It relies on the spatial separation of the different channels provided by the twin-core geometry and the power-dependent differential gain saturation given by the erbium ions. The amount of channel equalization depends on the fiber geometry parameters, as well as the optical parameters and relative channel power. In the two-channel case, gain saturation limits the useful channel input powers into the range of ~ -20 dBm to -0 dBm. Channel equalization rates in excess of -0.4 dB per dB of input-power imbalance are predicted. When used in cascade, twin-core EDFAs are shown to provide not only efficient channel-power stabilization, but also self-healing against additional channel losses.
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Published date: 1995
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 78244
URI: http://eprints.soton.ac.uk/id/eprint/78244
ISSN: 0733-8724
PURE UUID: c3012e1f-2720-4ec8-8ebf-88e02aac0985
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:35
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Author:
R.I. Laming
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