A tutorial on the flexible optical networking paradigm: State of the art, trends, and research challenges
Rigid fixed-grid wavelength division multiplexing (WDM) optical networks can no longer
keep up with the emerging bandwidth-hungry and highly dynamic services in an efficient …
keep up with the emerging bandwidth-hungry and highly dynamic services in an efficient …
Digital signal processing techniques enabling multi-Tb\/s superchannel transmission: an overview of recent advances in DSP-enabled superchannels
X Liu, S Chandrasekhar… - IEEE Signal Processing …, 2014 - ieeexplore.ieee.org
Digital signal processing (DSP) combined with coherent detection has played a central role
in the recent capacity expansion of optical networks. Optical superchannels aim to increase …
in the recent capacity expansion of optical networks. Optical superchannels aim to increase …
Digital preemphasis in optical communication systems: On the DAC requirements for terabit transmission applications
Next-generation coherent optical systems are geared to employ high-speed digital-to-
analog converters (DAC), allowing for digital preprocessing of the signal and flexible optical …
analog converters (DAC), allowing for digital preprocessing of the signal and flexible optical …
400 Gbit/s single-carrier and 1 Tbit/s three-carrier superchannel signals using dual polarization 16-QAM with look-up table correction and optical pulse shaping
JH Ke, Y Gao, JC Cartledge - Optics Express, 2014 - opg.optica.org
A 448 Gbit/s single-carrier dual-polarization 16-ary quadrature-amplitude-modulation (DP
16-QAM) signal and a 1.206 Tbit/s three-carrier DP 16-QAM signal are demonstrated using …
16-QAM) signal and a 1.206 Tbit/s three-carrier DP 16-QAM signal are demonstrated using …
Bandwidth-variable transceivers based on four-dimensional modulation formats
JK Fischer, S Alreesh, R Elschner, F Frey… - Journal of Lightwave …, 2014 - opg.optica.org
In this invited contribution, we discuss technology options for bandwidth-variable
transceivers which are key components for the realization of flexible software-defined optical …
transceivers which are key components for the realization of flexible software-defined optical …
Time-domain digital pre-equalization for band-limited signals based on receiver-side adaptive equalizers
We theoretically and experimentally investigate a time-domain digital pre-equalization
(DPEQ) scheme for bandwidth-limited optical coherent communication systems, which is …
(DPEQ) scheme for bandwidth-limited optical coherent communication systems, which is …
Time-frequency packing for high-capacity coherent optical links
G Colavolpe, T Foggi - IEEE Transactions on Communications, 2014 - ieeexplore.ieee.org
We consider realistic long-haul optical links, with linear and nonlinear impairments, and
investigate the application of time-frequency packing with low-order constellations as a …
investigate the application of time-frequency packing with low-order constellations as a …
A review of high-speed coherent transmission technologies for long-haul DWDM transmission at 100G and beyond
Over the past five years, coherent transmission technologies have delivered more than an
order of magnitude improvement in the capacity-reach product for long-haul DWDM …
order of magnitude improvement in the capacity-reach product for long-haul DWDM …
Phase noise analysis of injected gain switched comb source for coherent communications
We present experimentally and analytically the phase noise characterization of an externally
injected gain switched comb source. The results reveal the residual high frequency FM …
injected gain switched comb source. The results reveal the residual high frequency FM …
Investigation on Nyquist pulse generation using a single dual-parallel Mach-Zehnder modulator
The generation of Nyquist pulses with a dual parallel Mach-Zehnder modulator (DPMZM)
driven by a single RF signal is demonstrated theoretically and experimentally. A complete …
driven by a single RF signal is demonstrated theoretically and experimentally. A complete …