Optical predistortion enabling phase preservation in optical signal processing demonstrated in FWM-based amplitude limiter
Optical predistortion enabling phase preservation in optical signal processing demonstrated in FWM-based amplitude limiter
We propose and demonstrate a technique to obtain phase preservation in optical processing which is suitable for many four-wave mixing (FWM) based processing devices, provided they may be modified to incorporate two conjugating FWM stages. It functions by using a first conjugating nonlinear stage to predistort the signal using self-phase modulation (SPM) such that when the signal undergoes further SPM in a second conjugating FWM stage, the two SPM contributions negate each other, resulting in phase preserving output. In this work, we use the second stage to perform amplitude squeezing through parametric gain saturation and characterise the scheme by regenerating a QPSK signal contaminated with broadband amplitude noise. Experimental analysis of the system with and without predistortion is provided and phase preserving operation using the proposed scheme is confirmed.
963-970
Bottrill, Kyle
8c2e6c2d-9f14-424e-b779-43c23e2f49ac
Parmigiani, Francesca
6a386833-5186-4448-875e-d691161aba62
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
15 February 2017
Bottrill, Kyle
8c2e6c2d-9f14-424e-b779-43c23e2f49ac
Parmigiani, Francesca
6a386833-5186-4448-875e-d691161aba62
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Bottrill, Kyle, Parmigiani, Francesca, Richardson, David and Petropoulos, Periklis
(2017)
Optical predistortion enabling phase preservation in optical signal processing demonstrated in FWM-based amplitude limiter.
Journal of Lightwave Technology, 35 (4), .
(doi:10.1109/JLT.2016.2604493).
Abstract
We propose and demonstrate a technique to obtain phase preservation in optical processing which is suitable for many four-wave mixing (FWM) based processing devices, provided they may be modified to incorporate two conjugating FWM stages. It functions by using a first conjugating nonlinear stage to predistort the signal using self-phase modulation (SPM) such that when the signal undergoes further SPM in a second conjugating FWM stage, the two SPM contributions negate each other, resulting in phase preserving output. In this work, we use the second stage to perform amplitude squeezing through parametric gain saturation and characterise the scheme by regenerating a QPSK signal contaminated with broadband amplitude noise. Experimental analysis of the system with and without predistortion is provided and phase preserving operation using the proposed scheme is confirmed.
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- Accepted Manuscript
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Accepted/In Press date: 29 August 2016
e-pub ahead of print date: 30 August 2016
Published date: 15 February 2017
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 396183
URI: http://eprints.soton.ac.uk/id/eprint/396183
ISSN: 0733-8724
PURE UUID: dd469ce0-a8d6-435a-a7a8-c73df870f69a
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Date deposited: 01 Sep 2016 08:27
Last modified: 15 Mar 2024 03:53
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Author:
Francesca Parmigiani
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