Real-time measurements of a 40 Gb/s coherent system
Reads0
Chats0
TLDR
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.Abstract:
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. Digital compensation is used for dispersion and polarization effects, with little performance degradation created by 150 ps of rapidly varying 1st-order PMD.read more
Citations
More filters
Journal ArticleDOI
Hardware-Efficient Coherent Digital Receiver Concept With Feedforward Carrier Recovery for $M$ -QAM Constellations
TL;DR: In this paper, the authors proposed a novel digital carrier recovery algorithm for arbitrary M-ary quadrature amplitude modulation (M-QAM) constellations in an intradyne coherent optical receiver.
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
Fundamentals of Coherent Optical Fiber Communications
TL;DR: The history of research and development related to coherent optical communications is reviewed and the principle of coherent detection is described, including its quantum-noise characteristics, which discusses the role of digital signal processing in mitigating linear transmission impairments, estimating the carrier phase, and tracking the state of polarization of the signal in coherent receivers.
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
Roadmap of optical communications
Erik Agrell,Magnus Karlsson,Andrew R. Chraplyvy,David J. Richardson,Peter M. Krummrich,Peter J. Winzer,Kim B. Roberts,Johannes Karl Fischer,Seb J. Savory,Benjamin J. Eggleton,Marco Secondini,Frank R. Kschischang,Andrew Lord,Josep Prat,Ioannis Tomkos,John E. Bowers,Sudha Srinivasan,Maite Brandt-Pearce,Nicolas Gisin +18 more
TL;DR: In this paper, 16 researchers, each a world-leading expert in their respective subfields, contribute a section to this invited review article, summarizing their views on state-of-the-art and future developments in optical communications.
References
More filters
Journal ArticleDOI
A BPSK/QPSK Timing-Error Detector for Sampled Receivers
TL;DR: A simple algorithm for detection of timing error of a synchronous, band-limited, BPSK or QPSK data stream is proposed and derivation of the s curve reveals a sinusoidal shape.
Journal ArticleDOI
Electronic compensation of chromatic dispersion using a digital coherent receiver.
TL;DR: Results of a 42.8Gbit/s nonlinear transmission experiment, using polarization multiplexed QPSK data at 10.7GBaud, with 4 bits per symbol is presented, which allows the digital coherent receiver to be compensated digitally after transmission over 6400km of standard single mode fiber.
Journal ArticleDOI
PLL-free synchronous QPSK polarization multiplex/diversity receiver concept with digital I&Q baseband processing
TL;DR: This synchronous quadrature-phase-shift keying (QPSK) receiver concept allows us to process signals in parallel after electronic demultiplexing.
Journal ArticleDOI
Electronic precompensation of optical nonlinearity
TL;DR: In this paper, a 10-Gb/s transmitter subsystem is described for single-mode fiber (G.652) single-input single-output (SISO) networks.
Proceedings Article
10 x 111 Gbit/s 50 GHz spaced, POLMUX-RZ-DQPSK transmission over 2375 km employing coherent equalisation
C.R.S. Fludger,T. Duthel,D. van den Borne,C. Schulien,E.-D. Schmidt,T. Wuth,E. de Man,GD Giok-Djan Khoe,H. de Waardt +8 more
TL;DR: In this paper, the authors demonstrate spectrally efficient (2.0 b/s/Hz) transmission of 10 x 111 Gbit/s polarisation multiplexed 27.75 Gbaud RZ-DQPSK over 2375km of SSMF and 5 add-drop nodes.