Efficient erbium-doped fibre amplifiers incorporating an optical isolator
Efficient erbium-doped fibre amplifiers incorporating an optical isolator
A composite-EDFA configuration which incorporates an optical isolator has been investigated theoretically and experimentally. The isolator prevents the build-up of the backward-ASE and results in an amplifier with high gain and near quantum-limited noise figure (NF). The optimum position of the isolator has been calculated as a function of the pump power so that minimum NF and maximum gain are achieved simultaneously. It is shown that under practical pump powers, the optimised composite EDFA exhibits a gain improvement of about 5dB and a NF reduction in excess of 1.5dB when compared with an optimised conventional EDFA. Finally, a high-gain composite EDFA has been experimentally demonstrated which exhibits a gain of 51dB and NF of 3.1dB for only 45mW of pump power.
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
September 1992
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Zervas, M.N., Laming, R.I. and Payne, D.N.
(1992)
Efficient erbium-doped fibre amplifiers incorporating an optical isolator.
SPIE OE/Fibers, Boston, United States.
08 - 11 Sep 1992.
10 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
A composite-EDFA configuration which incorporates an optical isolator has been investigated theoretically and experimentally. The isolator prevents the build-up of the backward-ASE and results in an amplifier with high gain and near quantum-limited noise figure (NF). The optimum position of the isolator has been calculated as a function of the pump power so that minimum NF and maximum gain are achieved simultaneously. It is shown that under practical pump powers, the optimised composite EDFA exhibits a gain improvement of about 5dB and a NF reduction in excess of 1.5dB when compared with an optimised conventional EDFA. Finally, a high-gain composite EDFA has been experimentally demonstrated which exhibits a gain of 51dB and NF of 3.1dB for only 45mW of pump power.
More information
Published date: September 1992
Additional Information:
Paper 17
Venue - Dates:
SPIE OE/Fibers, Boston, United States, 1992-09-08 - 1992-09-11
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 379853
URI: http://eprints.soton.ac.uk/id/eprint/379853
PURE UUID: af59bf93-d46e-4e91-a54f-42c4b3d7bd67
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Date deposited: 07 Aug 2015 14:03
Last modified: 15 Mar 2024 02:42
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Contributors
Author:
R.I. Laming
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