Nonlinear mitigation using carrier phase estimation and digital backward propagation in coherent QAM transmission

Lin, Chien-Yu; Asif, Rameez; Holtmannspoetter, Michael; Schmauß, Bernhard

doi:10.1364/oe.20.00b405

Cited by 25 publications

(13 citation statements)

References 17 publications

(11 reference statements)

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“…In these circumstances, strong correlations within the first lobe of the four-wave-mixing efficiency curve (equation 18) occur and the generated mixing products become more deterministic and more strongly correlated from symbol to symbol. These features allow for some of the nonlinear impairments to be partially compensated by linear equalizers [165], or by simplified nonlinear compensators which exploit the correlations [166]. In both of these cases, the impact of the nonlinearly generated noise signal is reduced, and so predictions based on equations 24 to 29 are slightly pessimistic.…”

Section: Nonlinear Signal To Noise Ratio In a Coherent Transmission Smentioning

confidence: 99%

Performance limits in optical communications due to fiber nonlinearity

Ellis¹,

McCarthy²,

Khateeb³

et al. 2017

Adv. Opt. Photon.

154

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Section: Nonlinear Signal To Noise Ratio In a Coherent Transmission Smentioning

confidence: 99%

Performance limits in optical communications due to fiber nonlinearity

Ellis¹,

McCarthy²,

Khateeb³

et al. 2017

Adv. Opt. Photon.

154

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“…It is worth mentioning here that high resolution ADCs can give you better performance but on the other hand they have high electronic noise that is not beneficial for high secure key rates in terms of QTTH. We have also summarized the ADC requirements [24] in terms of ADC bandwidth and ADC sampling rate ( /2), as listed in Table 2.…”

Section: Characterization Of Alice and Bob For Coherent Transmissionmentioning

confidence: 99%

Quantum-to-the-Home: Achieving Gbits/s Secure Key Rates via Commercial Off-the-Shelf Telecommunication Equipment

Asif

Buchanan

2017

Security and Communication Networks

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There is current significant interest in Fiber-to-the-Home (FTTH) networks, that is, end-to-end optical connectivity. Currently, it may be limited due to the presence of last-mile copper wire connections. However, in near future, it is envisaged that FTTH connections will exist, and a key offering would be the possibility of optical encryption that can best be implemented using Quantum Key Distribution (QKD). However, it is very important that the QKD infrastructure is compatible with the already existing networks for a smooth transition and integration with the classical data traffic. In this paper, we report the feasibility of using off-the-shelf telecommunication components to enable high performance Continuous Variable-Quantum Key Distribution (CV-QKD) systems that can yield secure key rates in the range of 100 Mbits/s under practical operating conditions. Multilevel phase modulated signals ( -PSK) are evaluated in terms of secure key rates and transmission distances. The traditional receiver is discussed, aided by the phase noise cancellation based digital signal processing module for detecting the complex quantum signals. Furthermore, we have discussed the compatibility of multiplexers and demultiplexers for wavelength division multiplexed Quantum-to-the-Home (QTTH) network and the impact of splitting ratio is analyzed. The results are thoroughly compared with the commercially available high-cost encryption modules.

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“…give efficient performance, they have high electronic noise that is not beneficial for quantum signals, that is, impacting the high secure key rates. The ADC requirements [24] in terms of bandwidth and sampling rate (Ts/2) are enlisted in Table 3.…”

Section: Characterization Of Coherent Receivermentioning

confidence: 99%

Recent Progress in the Quantum-to-the-Home Networks

Asif¹,

Buchanan²

2019

Telecommunication Networks - Trends and Developments

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For secure data transmission to the end users in a conventional fiber-to-the-home (FTTH) network, quantum cryptography (QC) is getting much consideration nowadays. QC or more specifically quantum key distribution (QKD) promises unconditionally secure protocol, the Holy Grail of communication and information security that is based on the fundamental laws of quantum physics. In this chapter, we discuss the design issues in a hybrid quantum-classical communication network, performance of the cost-effective offthe-shelf telecommunication equipment, our latest results on a four-state (Quadrature Phase Shift Keying, 'QPSK') RF sub-carrier assisted continuous-variable quantum key distribution (CV-QKD) multiuser network based on ultra-low loss quantum channel (pure silica core fiber, 'PSCF') and microelectromechanical systems (MEMS) based add/drop switch. The results are thoroughly compared with the commercially available high-cost encryption modules. It is expected that the discussed cost-effective and energy efficient QKD network can facilitate the practical applications of the CV-QKD protocol on the commercial scale in near future for smart access networks.

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Nonlinear mitigation using carrier phase estimation and digital backward propagation in coherent QAM transmission

Cited by 25 publications

References 17 publications

Performance limits in optical communications due to fiber nonlinearity

Performance limits in optical communications due to fiber nonlinearity

Quantum-to-the-Home: Achieving Gbits/s Secure Key Rates via Commercial Off-the-Shelf Telecommunication Equipment

Recent Progress in the Quantum-to-the-Home Networks

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