Nonlinearity Compensation in a Fiber-Optic Link by Optical Phase Conjugation

Minzioni, P.

doi:10.1080/01468030802364117

Cited by 29 publications

(27 citation statements)

References 59 publications

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“…3(c) and (d), respectively. As expected for this link configuration [3], the maximum improvement is achieved for mid-link OPC operation, however, offsetting the OPC by ±0.17·L (one span for 966-km transmission) still provides MI and SNR improvements. These results are in agreement with the numerical predictions of [6].…”

Section: Transmission Resultsmentioning

confidence: 80%

“…The improvement provided by in-line OPC for compensation of Kerr nonlinearity is however strongly dependent on the transmission link fulfilling rather stringent dispersion and power symmetry requirements [3]. These requirements limit the practical link configurations where compensation is achieved.…”

Section: Introductionmentioning

confidence: 99%

“…These requirements limit the practical link configurations where compensation is achieved. Dispersion-managed transmission with lumped erbium-doped fiber amplifiers (EDFAs) or links with distributed Raman amplification can provide sufficient symmetry to enable performance improvement by mid-link OPC [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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Link-Placement Characterization of Optical Phase Conjugation for Nonlinearity Compensation

Ros

Yankov

Silva

et al. 2018

Optical Fiber Communication Conference

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Section: Transmission Resultsmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

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Link-Placement Characterization of Optical Phase Conjugation for Nonlinearity Compensation

Ros

Yankov

Silva

et al. 2018

Optical Fiber Communication Conference

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“…Therefore, some approaches based on all-optical signal processing [3][4][5][6] have recently regained interest in the context of nonlinear distortion compensation. In particular nonlinear distortion compensation based on optical phase conjugation (OPC) [7] has led to a number of demonstrations in systems carrying Tb/s data signals [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Multichannel nonlinear distortion compensation using optical phase conjugation in a silicon nanowire

Vuković¹,

Schröder²,

Ros³

et al. 2015

Opt. Express

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We experimentally demonstrate compensation of nonlinear distortion caused by the Kerr effect in a 3 × 32-Gbaud quadrature phaseshift keying (QPSK) wavelength-division multiplexing (WDM) transmission system. We use optical phase conjugation (OPC) produced by four-wave mixing (FWM) in a 7-mm long silicon nanowire. A clear improvement in Q-factor is shown after 800-km transmission with high span input power when comparing the system with and without the optical phase conjugation module. The influence of OSNR degradation introduced by the silicon nanowire is analysed by comparing transmission systems of three different lengths. This is the first demonstration of nonlinear compensation using a silicon nanowire.

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“…This can lead to a snr gain of up to (3snr0) 3/2 /2 equivalent to a 1.89 snr0 1/3 reach enhancement [37]). However for an EDFA only system mid-span placement leads to dispersion-power asymmetry [38] which needs to be compensated or ultra-flat Raman amplification used [32,39]. Practical demonstrations of this have been reported with significant performance enhancements for WDM systems with reasonable transmission symmetry in power [32][33][34] and dispersion [35].…”

Section: Serially Generated Conjugatesmentioning

confidence: 99%

Impact of Optical Phase Conjugation on the Nonlinear Shannon Limit

Ellis

Khateeb

McCarthy

2016

Optical Fiber Communication Conference

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Abstract:Compensation of the detrimental impacts of nonlinearity on long haul wavelength division multiplexed system performance is discussed, and the difference between transmitter, receiver and in-line compensation analyzed. The impact of system imperfections is also outlined.OCIS codes: (000.0000) General; (000.0000) General [8-pt. type] For codes, see http://www.osapublishing.org/submit/ocis/ IntroductionThe perception of the nonlinear Shannon limit [1] is currently seen as preventing the continued smooth (exponential) increase of optical transmission throughput, resulting in a predicted capacity crunch [2]. The focus of the research community on these issues has resulted in specific international discussion meetings [e.g. 3] and even significant inducement prizes [4]. One of the earliest proposals to compensate for nonlinear impairments in an optical transmission system was the use of optical phase conjugation (OPC) [5,6]. In an OPC system, the entire signal is phase conjugated after a certain length of a transmission system. If the signal is then propagated through an identical length, subject to certain symmetry conditions, nonlinear effects and even ordered dispersive effects are reversed. If the symmetry conditions are not met, then partial compensation of the impairments is still possible [7]. Following early work on direct detection systems [e.g. 8-10] which were severely constrained by nonlinearity, recent attention has focused on the digital signal processing capabilities enabled by nested Mach-Zhender modulators [11] and digital coherent receivers [12]. However, as we approach the nonlinear Shannon limit there is renewed interest in the direct compensation of nonlinear impairments. In this paper, we review recent progress in the use of optical conjugation for the mitigation of nonlinear impairments in both serial and parallel configurations, and estimate the extent to which each technique may enable transmission beyond the nonlinear Shannon limit.

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Nonlinearity Compensation in a Fiber-Optic Link by Optical Phase Conjugation

Cited by 29 publications

References 59 publications

Link-Placement Characterization of Optical Phase Conjugation for Nonlinearity Compensation

Link-Placement Characterization of Optical Phase Conjugation for Nonlinearity Compensation

Multichannel nonlinear distortion compensation using optical phase conjugation in a silicon nanowire

Impact of Optical Phase Conjugation on the Nonlinear Shannon Limit

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