Simultaneous wavelength conversion and optical phase conjugation of 200 Gb/s (5 × 40 Gb/s) WDM signal using a highly nonlinear fiber four-wave mixer

Watanabe, Shigeki; Takeda, Shin‐ichi; Ishikawa, G.; Ooi, H.; Nielsen, Jon; Sonne, Carsten

doi:10.1049/cp:19971597

Cited by 32 publications

(16 citation statements)

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“…Another potentially important application is dispersion compensation by midspan spectral inversion where the optical phase conjugation of the FWM process is useful [70]. It should be noted that very impressive results on midspan spectral inversion have also been reported using optical fiber as the nonlinear element [71].…”

Section: Four-wave Mixing In Soasmentioning

confidence: 99%

Semiconductor optical amplifier-based all-optical gates for high-speed optical processing

Stubkjaer

2000

IEEE J. Select. Topics Quantum Electron.

455

161

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Abstract-Semiconductor optical amplifiers are useful building blocks for all-optical gates as wavelength converters and OTDM demultiplexers. This paper reviews the progress from simple gates using cross-gain modulation and four-wave mixing to the integrated interferometric gates using cross-phase modulation. These gates are very efficient for high-speed signal processing and will open up interesting new areas, such as all-optical regeneration and high-speed all-optical logic functions.Index Terms-Add/drop multiplexer, optical gate, optical processing, semiconductor optical amplifier, wavelength converter.

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Section: Four-wave Mixing In Soasmentioning

confidence: 99%

Semiconductor optical amplifier-based all-optical gates for high-speed optical processing

Stubkjaer

2000

IEEE J. Select. Topics Quantum Electron.

455

161

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“…As a result, a difference in residual dispersion is present after transmission. In most OPC-based transmission experiments reported so far, the difference in residual dispersion is compensated for by optimizing the postcompensation after transmission on a per channel basis [15], [16], [25], [27]- [32], [39], [40]. Alternatively, the third-order dispersion can be compensated for using a slope compensator [38].…”

Section: A Theory Of Phase Conjugationmentioning

confidence: 99%

“…WDM transmission over 100 km of fiber has been shown at 10 [15] and 40 Gb/s [16]. The first multispan WDM experiment was published in [20] transmitting five channels 10 Gb/s over 320 km of SSMF.…”

Section: Opc-aided Transmissionmentioning

confidence: 99%

Long-haul DWDM transmission systems employing optical phase conjugation

Jansen

Borne

Krummrich

et al. 2006

IEEE J. Select. Topics Quantum Electron.

140

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Abstract-In this paper, we review the recent progress in transmission experiments by employing optical phase conjugation (OPC) for the compensation of chromatic dispersion and nonlinear impairments. OPC is realized with difference frequency generation (DFG) in a periodically poled lithium-niobate (PPLN) waveguide, for transparent wavelength-division multiplexed (WDM) operation with high conversion efficiency. We discuss extensively the principle behind optical phase conjugation and the realization of a polarization independent OPC subsystem. Using OPC for chromatic dispersion compensation WDM 40-Gb/s long-haul transmission is described. As well, transmission employing both mixed data rates and mixed modulation formats is discussed. No significant nonlinear impairments are observed from the nonperiodic dispersion map used in these experiments. The compensation of intrachannel nonlinear impairments by OPC is described for WDM carrier-suppressed return-to-zero (CSRZ) transmission. In this experiment, a 50% increase in transmission reach is obtained by adding an OPC unit to a transmission line using dispersion compensating fiber (DCF) for dispersion compensation. Furthermore, the compensation of impairments due to nonlinear phase noise is reviewed. An in-depth analysis is conducted on what performance improvement is to be expected for various OPC configurations and a proof-of-principle experiment is described showing over 4-dB improvement in Q-factor due to compensation of nonlinear impairments resulting from nonlinear phase noise. Finally, an ultralong-haul WDM transmission of 22 × 20-Gb/s return-tozero differential quadrature phase-shift keying (RZ-DQPSK) is discussed showing that OPC can compensate for chromatic dispersion, as well as self-phase modulation (SPM) induced nonlinear impairments, such as nonlinear phase noise. Compared to a "conventional" transmission link using DCF for dispersion compensation, a 44% increase in transmission reach is obtained when OPC is employed. In this experiment, we show the feasibility of using only one polarization-independent PPLN subsystem to compensate for an accumulated chromatic dispersion of over 160 000 ps/nm. Index Terms-Dispersion compensation, differential phaseshift keying (DPSK), differential quadrature phase-shift keying (DQPSK), duobinary, fiber-optics communications, nonlinear phase noise, phase conjugation, phase-shift keying, periodically poled lithium niobate (PPLN), spectral inversion.

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“…The mid-span OPC element typically involves a four-wave mixing (FWM) process between a communications signal and a strong frequency offset pump in a nonlinear element [2,7], which reproduces a phase-conjugated copy of each channel at a frequency that is spectrally inverted about the pump. The conjugated copy then propagates the remainder of the link, undoing detrimental transmission effects suffered prior to OPC.…”

Section: Introductionmentioning

confidence: 99%

Minimizing inter-channel cross-phase modulation with optical phase conjugation in asymmetric fibre links

Hesketh

Petropoulos

2016

Opt. Express

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Using analytic and numerical modelling of fibre transmission systems that employ optical phase conjugation (OPC), we show inter-channel cross-phase modulation depends on the integrated square error between nonlinear profiles before and after OPC and that arranging amplifiers and tuning power levels is crucial to minimizing noise. We derive modulation transparent formulas for phase noise and optimal power settings. Examples are shown for 16 and 64 quadrature amplitude modulation.

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Simultaneous wavelength conversion and optical phase conjugation of 200 Gb/s (5 × 40 Gb/s) WDM signal using a highly nonlinear fiber four-wave mixer

Cited by 32 publications

References 0 publications

Semiconductor optical amplifier-based all-optical gates for high-speed optical processing

Semiconductor optical amplifier-based all-optical gates for high-speed optical processing

Long-haul DWDM transmission systems employing optical phase conjugation

Minimizing inter-channel cross-phase modulation with optical phase conjugation in asymmetric fibre links

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