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Phase preserving amplitude saturation through tone synthesis assisted saturated four-wave mixing

Phase preserving amplitude saturation through tone synthesis assisted saturated four-wave mixing
Phase preserving amplitude saturation through tone synthesis assisted saturated four-wave mixing
When processing a data carrying signal with amplitude saturation in a fibre-optic parametric amplifier, the signal can be subject to a deleterious conversion of its amplitude noise into phase noise. To overcome this, we propose and demonstrate a scheme in which the products of four-wave mixing are instead synthesised using spectral shaping of multicast replicas of the signal, rather than naturally through four-wave mixing itself. This allows us to emulate the advancement of four-wave mixing without incurring unwanted amplitude noise to phase noise conversion. A final stage of four-wave mixing is used to bring about amplitude squeezing, with little impact on the phase noise of the signal. Using this technique, we are able to demonstrate phase preserving amplitude squeezing of a 10 GBd QPSK signal using as a medium, a highly nonlinear fibre in which the traditional, single pump approach fails.
Amplitude noise, amplitude regeneration, four wave mixing, optical fiber communication, optical parametric amplifiers, optical signal processing, phase noise, phase shift keying
0733-8724
1817-1826
Bottrill, Kyle
8c2e6c2d-9f14-424e-b779-43c23e2f49ac
Taengnoi, Natsupa
afc5fb3e-224b-43b3-a161-931ed77faec1
Hong, Yang
73d5144c-02db-4977-b517-0d2f5a052807
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Bottrill, Kyle
8c2e6c2d-9f14-424e-b779-43c23e2f49ac
Taengnoi, Natsupa
afc5fb3e-224b-43b3-a161-931ed77faec1
Hong, Yang
73d5144c-02db-4977-b517-0d2f5a052807
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7

Bottrill, Kyle, Taengnoi, Natsupa, Hong, Yang, Richardson, David J. and Petropoulos, Periklis (2020) Phase preserving amplitude saturation through tone synthesis assisted saturated four-wave mixing. IEEE Journal of Lightwave Technology, 38 (7), 1817-1826, [9005183]. (doi:10.1109/JLT.2020.2973593).

Record type: Article

Abstract

When processing a data carrying signal with amplitude saturation in a fibre-optic parametric amplifier, the signal can be subject to a deleterious conversion of its amplitude noise into phase noise. To overcome this, we propose and demonstrate a scheme in which the products of four-wave mixing are instead synthesised using spectral shaping of multicast replicas of the signal, rather than naturally through four-wave mixing itself. This allows us to emulate the advancement of four-wave mixing without incurring unwanted amplitude noise to phase noise conversion. A final stage of four-wave mixing is used to bring about amplitude squeezing, with little impact on the phase noise of the signal. Using this technique, we are able to demonstrate phase preserving amplitude squeezing of a 10 GBd QPSK signal using as a medium, a highly nonlinear fibre in which the traditional, single pump approach fails.

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Phase Preserving Amplitude Saturation through Tone Synthesis Assisted Saturated Four-Wave Mixing - Accepted Manuscript
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Accepted/In Press date: 6 February 2020
e-pub ahead of print date: 20 February 2020
Published date: 1 April 2020
Keywords: Amplitude noise, amplitude regeneration, four wave mixing, optical fiber communication, optical parametric amplifiers, optical signal processing, phase noise, phase shift keying

Identifiers

Local EPrints ID: 440968
URI: http://eprints.soton.ac.uk/id/eprint/440968
ISSN: 0733-8724
PURE UUID: 7edc90ff-d32a-4936-8664-8fe744ec8839
ORCID for Kyle Bottrill: ORCID iD orcid.org/0000-0002-9872-110X
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for Periklis Petropoulos: ORCID iD orcid.org/0000-0002-1576-8034

Catalogue record

Date deposited: 26 May 2020 16:31
Last modified: 01 Nov 2022 02:47

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Contributors

Author: Kyle Bottrill ORCID iD
Author: Yang Hong

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