Digital compensation of imperfect pump counter-phasing induced phase distortion in optical phase conjugation of high-order QAM

Thanh Tu Nguyen; Sonia Boscolo; Abdallah Ali; Stylianos Sygletos; Shigehiro Takasaka; Ryuichi  Sugizaki; Andrew D. Ellis

doi:10.1364/OE.418386

Digital compensation of imperfect pump counter-phasing induced phase distortion in optical phase conjugation of high-order QAM

Thanh Tu Nguyen, Sonia Boscolo, Abdallah Ali, Stylianos Sygletos, Shigehiro Takasaka, Ryuichi Sugizaki, Andrew D. Ellis

Research output: Contribution to journal › Article › peer-review

Abstract

We propose a new two-stage digital signal processing scheme to suppress the phase
distortion that arises from imperfect pump counter-phasing in a dual-pump fibre-based optical phase conjugation system. We demonstrate experimentally and numerically a signal-to-noise ratio improvement of more than 4 dB relative to conventional phase noise compensation, when the proposed scheme is used with 16/64/256 quadrature-amplitude modulation signals at pump-phase mismatch values as large as 8°.

Original language	English
Article number	418386
Pages (from-to)	17464-17475
Number of pages	12
Journal	Optics Express
Volume	29
Issue number	11
Early online date	21 May 2021
DOIs	https://doi.org/10.1364/OE.418386
Publication status	Published - 24 May 2021

Bibliographical note

Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Funding. This work was supported by the UK EPSRC (Engineering and Physical Sciences Research Council) (EP/R035342/1 - TRANSNET, EP/S003436/1 - PHOS, EP/S016171/1 - EEMC).

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10.1364/OE.418386Licence: CC BY 3.0

Digital compensation of imperfect pump counter-phasing
Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Final published version, 3.29 MBLicence: CC BY 3.0

Cite this

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abstract = "We propose a new two-stage digital signal processing scheme to suppress the phasedistortion that arises from imperfect pump counter-phasing in a dual-pump fibre-based optical phase conjugation system. We demonstrate experimentally and numerically a signal-to-noise ratio improvement of more than 4 dB relative to conventional phase noise compensation, when the proposed scheme is used with 16/64/256 quadrature-amplitude modulation signals at pump-phase mismatch values as large as 8°.",

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AU - Boscolo, Sonia

AU - Ali, Abdallah

AU - Sygletos, Stylianos

AU - Takasaka, Shigehiro

AU - Sugizaki, Ryuichi

AU - Ellis, Andrew D.

N1 - Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funding. This work was supported by the UK EPSRC (Engineering and Physical Sciences Research Council) (EP/R035342/1 - TRANSNET, EP/S003436/1 - PHOS, EP/S016171/1 - EEMC).

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AB - We propose a new two-stage digital signal processing scheme to suppress the phasedistortion that arises from imperfect pump counter-phasing in a dual-pump fibre-based optical phase conjugation system. We demonstrate experimentally and numerically a signal-to-noise ratio improvement of more than 4 dB relative to conventional phase noise compensation, when the proposed scheme is used with 16/64/256 quadrature-amplitude modulation signals at pump-phase mismatch values as large as 8°.

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Digital compensation of imperfect pump counter-phasing induced phase distortion in optical phase conjugation of high-order QAM

Abstract

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