Results 1 to 10 of about 8,210 (158)
Coherent optical communications using coherence-cloned Kerr soliton microcombs [PDF]
Nature Communications, 2022 Kerr frequency combs are a promising laser source for future optical networks. The authors demonstrate coherence-cloning between two remote Kerr combs and improve optical coherent communication in terms of performance, power consumption, and simplicity.
Yong Geng +8 more
doaj +6 more sources
Encryption in phase space for classical coherent optical communications [PDF]
Scientific Reports, 2023 Optical layer attacks on optical fiber communication networks are one of the weakest reinforced areas of the network, allowing attackers to overcome security software or firewalls when proper safeguards are not put into place.
Adrian Chan +5 more
doaj +2 more sources
Spin Laser Local Oscillators for Homodyne Detection in Coherent Optical Communications [PDF]
Micromachines, 2021 We numerically investigate spin-controlled vertical-cavity surface-emitting lasers (spin-VCSELs) for local oscillators, which are based on an injection locking technique used in coherent optical communications.
Nobuhide Yokota, Hiroshi Yasaka
doaj +2 more sources
Matched Filtering for MIMO Coherent Optical Communications with Mode-Dependent Loss Channels [PDF]
Sensors, 2022 The use of digital signal processors (DSP) to equalize coherent optical communication systems based on spatial division multiplexing (SDM) techniques is widespread in current optical receivers.
Luis M. Torres +2 more
doaj +2 more sources
Recent Advances in Coherent Optical Communications for Short-Reach: Phase Retrieval Methods
Photonics, 2023 Short-reach transmission systems traditionally utilize intensity modulation (IM) at the transmitter and direct detection (DD) at the receiver due to their cost-effectiveness, small footprint, and low power consumption.
Abdullah S. Karar +4 more
doaj +3 more sources
A family of Nyquist pulses for coherent optical communications
Optics Express, 2012 A new family of Nyquist pulses for coherent optical single carrier systems is introduced and is shown to increase the nonlinearity tolerance of dual-polarization (DP)-QPSK and DP-16-QAM systems. Numerical investigations for a single-channel 28 Gbaud DP-16-QAM long-haul system without optical dispersion compensation indicate that the proposed pulse can ...
Benoit Chatelain +2 more
exaly +3 more sources
Coherent OAM generation from discrete chaotic phase surfaces [PDF]
Scientific ReportsWe demonstrate coherent orbital angular momentum (OAM) generation from chaotic phase screens with discrete integer-valued azimuthal bias. Through Fourier analysis, we prove that coherent OAM amplitude is nonzero only when the ensemble-averaged complex ...
Netzer Moriya
doaj +2 more sources
Special Issue on Coherent Optical Communications
Photonics, 2023 Coherent optical communications have emerged as a groundbreaking technology, enabling data rates of 100 Gbit/s and beyond [...]
Fady I. El-Nahal
doaj +1 more source
Coherent communication with linear optics [PDF]
Physical Review A, 2008 We show how to implement several continuous-variable coherent protocols with linear optics. Noise can accumulate when implementing each coherent protocol with realistic optical devices. Our analysis bounds the level of noise accumulation. We highlight the connection between a coherent channel and a nonlocal quantum nondemolition interaction and give ...
Wilde, Mark M. +3 more
openaire +2 more sources
DSP-Based Physical Layer Security for Coherent Optical Communication Systems
IEEE Photonics Journal, 2022 A novel digital signal processing (DSP)-based scheme for physical layer security in coherent optical communication systems is proposed and numerically investigated.
Jiaxiang He +3 more
doaj +1 more source