Phase-sensitive QPSK channel phase quantization by amplifying the fourth-harmonic idler using counter-propagating Brillouin amplification

Almaiman, Ahmed; Cao, Yinwen; Mohajerin-Ariaei, Amirhossein; Ziyadi, Morteza; Liao, Peicheng; Bao, Changjing; Alishahi, Fatemeh; Fallahpour, Ahmad; Shamee, Bishara; Akasaka, Youichi; Ikeuchi, Tadashi; Wilkinson, S. R.; Touch, Joseph D.; Tur, Moshe; Willner, Alan E.

doi:10.1016/j.optcom.2018.04.003

Cited by 13 publications

(1 citation statement)

References 15 publications

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“…Amplitude regeneration [1]- [3] is an essential member of our developing all-optical signal processing toolkit and, along with phase regeneration [4], [5], phase conjugation [6], [7], harmonic generation [8] and wavelength conversion [9], [10], is an important part of any future all-optical network [11]. There is interest in performing such operations purely in the optical domain owing to the ultra-wide bandwidth, low latency and high energy efficiency that all-optical schemes could offer over optical-electronic-optical (OEO) approaches [12], [13].…”

Section: Introductionmentioning

confidence: 99%

Phase Preserving Amplitude Saturation Through Tone Synthesis Assisted Saturated Four-Wave Mixing

Bottrill

Taengnoi

Hong

et al. 2020

J. Lightwave Technol.

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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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Section: Introductionmentioning

confidence: 99%

Phase Preserving Amplitude Saturation Through Tone Synthesis Assisted Saturated Four-Wave Mixing

Bottrill

Taengnoi

Hong

et al. 2020

J. Lightwave Technol.

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Roadmap on all-optical processing

Minzioni

Lacava

Tanabe

et al. 2019

J. Opt.

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145

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The ability to process optical signals without passing into the electrical domain has always attracted the attention of the research community. Processing photons by photons unfolds new scenarios, in principle allowing for unseen signal processing and computing capabilities. Optical computation can be seen as a large scientific field in which researchers operate, trying to find solutions to their specific needs by different approaches; although the challenges can be substantially different, they are typically addressed using knowledge and technological platforms that are shared across the whole field. This significant know-how can also benefit other scientific communities, providing lateral solutions to their problems, as well as leading to novel applications. The aim of this Roadmap is to provide a broad view of the state-of-the-art in this lively scientific research field and to discuss the advances required to tackle emerging challenges, thanks to contributions authored by experts affiliated to both academic institutions and high-tech industries. The Roadmap is organized so as to put side by side contributions on different aspects of optical processing, aiming to enhance the cross-contamination of ideas between scientists working in three different fields of photonics: optical gates and logical units, high bit-rate signal processing and optical quantum computing. The ultimate intent of this paper is to provide guidance for young scientists as well as providing research-funding institutions and stake holders with a comprehensive overview of perspectives and opportunities offered by this research field.

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QPSK Signal Regeneration Based on Vector Phase Sensitive Amplification With Low Pump Powers

Xing

Wang

2019

IEEE Access

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In this paper, an all-optical quadrature phase shift keying (QPSK) phase regeneration scheme using vector phase sensitive amplification (PSA) is proposed, analyzed, and simulated. Compared with the conventional scalar PSA scheme, the vector superposition of harmonics makes it easy to obtain high gain extinction ratio (GER) with low pump powers. A subsequent phase-preserving amplitude regenerating device is also introduced to achieve full-quadrature regeneration of signal without phase conjugation and frequency conversion. In addition to the theoretical analysis of the implementation principle, a series of simulation results' analysis, including comparison with traditional scheme and regeneration performance assessment, is also included. The results show that undesired harmonics are greatly reduced by nearly 40 dB, and high GERs are available independent of input power. What is more, various levels of phase and amplitude noise can be effectively compressed for 10-Gbd QPSK signal. The regeneration system also reduces the signal bit error rate and gets 2-dB receiver optical signal noise ratio (OSNR) improvements at 13-dB OSNR input, which has potential applications in enhancing transmission distance in the future optical communication network.INDEX TERMS All-optical signal regeneration, optical fiber communication, optical signal processing, optical polarization, phase sensitive amplification, quadrature phase shift keying.

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Phase-sensitive QPSK channel phase quantization by amplifying the fourth-harmonic idler using counter-propagating Brillouin amplification

Cited by 13 publications

References 15 publications

Phase Preserving Amplitude Saturation Through Tone Synthesis Assisted Saturated Four-Wave Mixing

Phase Preserving Amplitude Saturation Through Tone Synthesis Assisted Saturated Four-Wave Mixing

Roadmap on all-optical processing

QPSK Signal Regeneration Based on Vector Phase Sensitive Amplification With Low Pump Powers

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