Analytical estimation of phase noise influence in coherent transmission system with digital dispersion equalization
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TLDR
A novel investigation on the enhancement of phase noise in coherent optical transmission system due to electronic chromatic dispersion compensation is presented and the performance of differential QPSK demodulation system is compared.Abstract:Â
We present a novel investigation on the enhancement of phase noise in coherent optical transmission system due to electronic chromatic dispersion compensation. Two types of equalizers, including a time domain fiber dispersion finite impulse response (FD-FIR) filter and a frequency domain blind look-up (BLU) filter are applied to mitigate the chromatic dispersion in a 112-Gbit/s polarization division multiplexed quadrature phase shift keying (PDM-QPSK) transmission system. The bit-error-rate (BER) floor in phase estimation using an optimized one-tap normalized least-mean-square (NLMS) filter, and considering the equalization enhanced phase noise (EEPN) is evaluated analytically including the correlation effects. The numerical simulations are implemented and compared with the performance of differential QPSK demodulation system.read more
Citations
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Journal ArticleDOI
Impact of Phase Noise and Compensation Techniques in Coherent Optical Systems
TL;DR: In this article, a digital coherence enhancement (DCE) technique is proposed to reduce the phase noise of transmit and receive laser components in coherent optical systems. And the performance of this technique and the statistical properties of the residual phase noise are analytically derived and verified by simulations, showing a high increase of the maximum bit-rate-distance product.
Journal ArticleDOI
Equalization enhanced phase noise in Nyquist-spaced superchannel transmission systems using multi-channel digital back-propagation.
Tianhua Xu,Gabriele Liga,Domanic Lavery,Benn C. Thomsen,Seb J. Savory,Robert I. Killey,Polina Bayvel +6 more
TL;DR: This report reports the first investigation of the origin and the impact of EEPN in Nyquist-spaced superchannel system, employing electronic dispersion compensation (EDC) and multi-channel DBP (MC-DBP).
Journal ArticleDOI
Receiver implemented RF pilot tone phase noise mitigation in coherent optical nPSK and nQAM systems
TL;DR: It is found that equalization enhanced phase noise--which appears as correlated pure phase noise, amplitude noise and time jitter-cannot be efficiently mitigated by the use of an (optically or electrically generated) RF pilot tone.
Journal ArticleDOI
Comprehensive Study of Equalization-Enhanced Phase Noise in Coherent Optical Systems
Aditya Kakkar,Jaime Rodrigo Navarro,Richard Schatz,Hadrien Louchet,Xiaodan Pang,Oskars Ozolins,Gunnar Jacobsen,Sergei Popov +7 more
TL;DR: A thorough analysis of equalization-enhanced phase noise (EEPN) and its impact on the coherent optical system is presented and it is shown that in coherent optical systems utilizing electronic dispersion compensation, this noise corresponds to multipath fading in wireless communication systems.
Journal ArticleDOI
EEPN and CD study for coherent optical nPSK and nQAM systems with RF pilot based phase noise compensation
TL;DR: A detailed study comparing two filters for the CD compensation namely the fixed frequency domain equalizer (FDE) filter and the adaptive least-mean-square (LMS) filter provides important novel physical insight into the equalization enhanced phase noise (EEPN) influence on the system bit-error-rate versus optical signal-to-noise-ratio (OSNR) performance.
References
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TL;DR: In this paper, a coherent optical receiver for demodulating optical quadrature phase-shift keying (QPSK) signals is proposed. But the authors do not consider the phase-diversity homodyne detection at the receiver.
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TL;DR: In this paper, the use of a coherent digital receiver for compensation of linear transmission impairments and polarization demultiplexing in a transmission system compatible with a future 100-Gb/s Ethernet standard is discussed.
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