Journal ArticleDOI
Optical Performance Monitoring in Digital Coherent Receivers
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TLDR
In this paper, a method for combined fiber parameter estimation from digital filter coefficients of a polarization diverse coherent receiver is presented, where all deterministic linear optical channel parameters like residual chromatic dispersion (CD), polarization-mode dispersion, and polarization dependent loss (PDL) are continuously monitored by analysis of the filter impulse response of the adaptive equalizer.Abstract:Â
In this paper, we present a method for combined fiber parameter estimation from digital filter coefficients of a polarization diverse coherent receiver. All deterministic linear optical channel parameters like residual chromatic dispersion (CD), polarization-mode dispersion (PMD), and polarization-dependent loss (PDL) are continuously monitored by analysis of the filter impulse response of the adaptive equalizer. After deriving the according equations from the theoretical linear fiber channel model, we demonstrate robust estimation for a joint combination of all impairments.read more
Citations
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Journal ArticleDOI
Digital Coherent Optical Receivers: Algorithms and Subsystems
TL;DR: In this article, a theoretical analysis of the dual-polarization constant modulus algorithm is presented, where the control surfaces several different equalizer algorithms are derived, including the decision-directed, trained, and the radially directed equalizer for both polarization division multiplexed quadriphase shift keyed (PDM-QPSK) and 16 level quadrature amplitude modulation (PDm-16-QAM).
Journal ArticleDOI
Fiber-optic transmission and networking: the previous 20 and the next 20 years [Invited]
TL;DR: Focusing on the optical transport and switching layer, aspects of large-scale spatial multiplexing, massive opto-electronic arrays and holistic optics-electronics-DSP integration, as well as optical node architectures for switching and multiplexed of spatial and spectral superchannels are covered.
Journal ArticleDOI
Optical Performance Monitoring: A Review of Current and Future Technologies
TL;DR: The development of various OPM techniques for direct-detection systems and digital coherent systems are reviewed and future OPM challenges in flexible and elastic optical networks are discussed.
Journal ArticleDOI
Chromatic Dispersion Estimation in Digital Coherent Receivers
R Andres Soriano,Fabian N. Hauske,Neil Guerrero Gonzalez,Zhuhong Zhang,Yabin Ye,I. Tafur Monroy +5 more
TL;DR: In this paper, different non-data-aided (blind) CD estimation methods for single-carrier transmission under implementation constraint conditions such as bandwidth limitation and sampling rate are presented.
Journal ArticleDOI
OSNR monitoring for QPSK and 16-QAM systems in presence of fiber nonlinearities for digital coherent receivers
TL;DR: Based on the received signal distributions after carrier phase estimation (CPE), it is proposed to characterize the nonlinearity-induced amplitude noise correlation across neighboring symbols and incorporate such information into error vector magnitude (EVM) calculation to realize fiber non linearity-insensitive OSNR monitoring.
References
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Journal ArticleDOI
PMD fundamentals: Polarization mode dispersion in optical fibers
James P. Gordon,H. Kogelnik +1 more
TL;DR: This paper reviews the fundamental concepts and basic theory of polarization mode dispersion in optical fibers and introduces a unified notation and methodology to link the various views and concepts in Jones space and Stokes space.
Journal ArticleDOI
Optical performance monitoring
Daniel C. Kilper,R. Bach,Daniel J. Blumenthal,D. Einstein,Taha Landolsi,L.M. Ostar,M. Preiss,Alan E. Willner +7 more
TL;DR: In this paper, the role of OPM as an enabling technology for advances in high-speed and optically switched networks is examined, with the focus on fault management and QoS monitoring in the optical domain.
Journal ArticleDOI
Real-time measurements of a 40 Gb/s coherent system
TL;DR: Continuous real-time measurements are shown from a coherent 40 Gb/s transmission system that uses Dual-Polarization Quadrature Phase Shift Keying (DP-QPSK) modulation, using digital compensation for dispersion and polarization effects.
Journal ArticleDOI
Coherent Equalization and POLMUX-RZ-DQPSK for Robust 100-GE Transmission
C.R.S. Fludger,T. Duthel,D. van den Borne,C. Schulien,E.-D. Schmidt,T. Wuth,J. C. Geyer,E. de Man,Khoe Giok-Djan,H. de Waardt +9 more
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.
Book
Algorithms for communications systems and their applications
TL;DR: This book discusses the design of high speed transmission systems over unshielded twisted pair cables, and modulation techniques for wireless systems, as well as some of the applications of interference cancellation.