Suppression of gain variation in a PSA-based phase regenerator using an additional harmonic
Suppression of gain variation in a PSA-based phase regenerator using an additional harmonic
Phase regeneration of an M-ary phase shift keyed signal through coherent addition with its (M-1)th phase harmonic, despite successfully regenerating phase, exhibits a strongly phase-dependent gain. By applying to this scheme, a small alteration that makes use of both the (M-1)th and conjugated (M+1)th phase harmonics, this undesirable gain variation may be reduced. We experimentally characterize both systems for the case of four-level phase quantization in terms of their complex transfer profiles and demonstrate a 6.5dB reduction in gain variation using the altered scheme. To perform measurements of the phase transfer profile of each scheme, we synthesize the systems from an optical comb, proposing and implementing a novel method to measure the relative phase between neighboring spectral lines.
2074-2077
Bottrill, K.
8c2e6c2d-9f14-424e-b779-43c23e2f49ac
Hesketh, Graham D.
70c7a4fe-99b5-4ea0-a524-39b632db5a79
Parmigiani, Francesca
6a386833-5186-4448-875e-d691161aba62
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
15 October 2014
Bottrill, K.
8c2e6c2d-9f14-424e-b779-43c23e2f49ac
Hesketh, Graham D.
70c7a4fe-99b5-4ea0-a524-39b632db5a79
Parmigiani, Francesca
6a386833-5186-4448-875e-d691161aba62
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Bottrill, K., Hesketh, Graham D., Parmigiani, Francesca, Horak, Peter, Richardson, David J. and Petropoulos, Periklis
(2014)
Suppression of gain variation in a PSA-based phase regenerator using an additional harmonic.
IEEE Photonics Technology Letters, 26 (20), .
(doi:10.1109/LPT.2014.2347198).
Abstract
Phase regeneration of an M-ary phase shift keyed signal through coherent addition with its (M-1)th phase harmonic, despite successfully regenerating phase, exhibits a strongly phase-dependent gain. By applying to this scheme, a small alteration that makes use of both the (M-1)th and conjugated (M+1)th phase harmonics, this undesirable gain variation may be reduced. We experimentally characterize both systems for the case of four-level phase quantization in terms of their complex transfer profiles and demonstrate a 6.5dB reduction in gain variation using the altered scheme. To perform measurements of the phase transfer profile of each scheme, we synthesize the systems from an optical comb, proposing and implementing a novel method to measure the relative phase between neighboring spectral lines.
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Accepted/In Press date: 7 August 2014
e-pub ahead of print date: 13 August 2014
Published date: 15 October 2014
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 375048
URI: http://eprints.soton.ac.uk/id/eprint/375048
ISSN: 1041-1135
PURE UUID: aa8ca5e5-a38a-4a62-86b8-7ecba515090e
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Date deposited: 10 Mar 2015 16:54
Last modified: 15 Mar 2024 03:53
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Author:
Graham D. Hesketh
Author:
Francesca Parmigiani
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