Electronic precompensation of optical nonlinearity

Roberts, Kim; Li, Chuandong; Strawczynski, L.; O’Sullivan, Maurice; Hardcastle, I.

doi:10.1109/lpt.2005.862360

Cited by 145 publications

(38 citation statements)

References 11 publications

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“…It was demonstrated in [32] that optical nonlinearities arising from known signals can be electrically compensated, and that the limits are due to the complexity and speed of the required hardware. CMOS improvements, and new methods, will allow future transmission systems to substantially mitigate known nonlinearities.…”

Section: Futurementioning

confidence: 99%

Performance of Dual-Polarization QPSK for Optical Transport Systems

Roberts

O’Sullivan

et al. 2009

J. Lightwave Technol.

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242

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Abstract-The emergence of capable semiconductor processes has allowed digital signal processing to extend the application range of high-capacity optical systems. We report the performance of polarization multiplexed (or dual-polarization) quadrature phase-shift keying at 40 and 100 Gb/s. Index Terms-Electronic signal processing, optical coherent transceiver, polarization multiplexing, quadrature phase-shift keying (QPSK).

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Section: Futurementioning

confidence: 99%

Performance of Dual-Polarization QPSK for Optical Transport Systems

Roberts

O’Sullivan

et al. 2009

J. Lightwave Technol.

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242

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“…Optical techniques include, for example, optical phase conjugation (OPC) using twin waves [1] or OPC devices placed mid-span [2]. Digital techniques include transmitter- [3], [4] and receiver-side [5] digital nonlinearity compensation (NLC), simple nonlinear phase shifts [6], [7], perturbation-based precompensation [8], adaptive filtering [9] and optimum detection [10]. With the exception of optimum detection (a special case of receiver-side NLC for single span transmission) the digital signal processing (DSP) techniques are algorithms which invert the propagation equations for the optical fiber, either exactly or with simplifying approximations.…”

Section: Introductionmentioning

confidence: 99%

The benefit of split nonlinearity compensation for single channel optical fiber communications

Lavery

Ives

Liga

et al. 2016

2016 IEEE Photonics Conference (IPC)

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Abstract-In this letter, we analyze the benefit of digital compensation of fiber nonlinearity, where the digital signal processing is divided between the transmitter and the receiver. The application of the Gaussian noise model indicates that, where there are two or more spans, it is always beneficial to split the nonlinearity compensation. The theory is verified via numerical simulations, investigating the transmission of a single-channel 50-GBd polarization division multiplexed 4-and 256-ary quadrature amplitude modulation signals over 100-km standard singlemode fiber spans, using lumped amplification. It is shown, theoretically, that the signal-to-noise ratio gain for long distances and high bandwidth transmission is 1.5 dB versus transmitteror receiver-based nonlinearity compensation.

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“…Together with the advances in high-speed digital signal processing (DSP) techniques, coherent detection is believed to be one of the next major enabling technologies to realize high spectral efficiency transmission at 100Gb/s per channel and beyond. The flexibility and scalability of DSP in coherent systems are studied for compensation of transmission impairments such as chromatic dispersion (CD) [2][3][4][5], polarization-mode dispersion (PMD) [6][7][8], Kerr nonlinearity [5,[9][10][11][12][13] and carrier phase recovery [14][15][16]. For DSP based CD compensation, Savory et al…”

Section: Introductionmentioning

confidence: 99%

Equalization-enhanced phase noise for 100Gb/s transmission and beyond with coherent detection

Lau

Shieh

Ho³

2010

2010 IEEE International Conference on Communication Systems

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The probability density function and impact of equalizationenhanced phase noise (EEPN) is analytically investigated and simulated for 100 Gb/s coherent systems using electronic dispersion compensation. EEPN impairment induces both phase noise and amplitude noise with the former twice as much as the latter. The effects of transmitter phase noise on EEPN are negligible for links with residual dispersion in excess of 700 ps/nm. Optimal linear equalizer in the presence of EEPN is derived but show only marginal performance improvement, indicating that EEPN is difficult to mitigate using simple DSP techniques. In addition, the effects of EEPN on carrier recovery techniques and corresponding cycle slip probabilities are studied.

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Electronic precompensation of optical nonlinearity

Cited by 145 publications

References 11 publications

Performance of Dual-Polarization QPSK for Optical Transport Systems

Performance of Dual-Polarization QPSK for Optical Transport Systems

The benefit of split nonlinearity compensation for single channel optical fiber communications

Equalization-enhanced phase noise for 100Gb/s transmission and beyond with coherent detection

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