Results 31 to 40 of about 108,515 (267)
Enforcing Energy Balance in Coherently Superimposed Optical Vortices
IEEE Photonics Journal, 2018 The generation of optical beams with multiple, mutually coherent orbital-angular-momentum (OAM) modes using phase gratings is analyzed from the perspective of energy distribution and radial mode composition.
Jaime Cisternas +2 more
doaj +1 more source
Tomography of a displacement photon counter for discrimination of single-rail optical qubits [PDF]
, 2018 We investigate the performance of a Kennedy receiver, which is known as a beneficial tool in optical coherent communications, to the quantum state discrimination of the two superpositions of vacuum and single photon states corresponding to the $\hat ...
Andersen, Ulrik L. +2 more
core +2 more sources
IEEE Photonics Journal, 2017 Beams carrying orbital angular momentum (OAM) are very helpful in enhancing the information carrying capacity in free-space optical communications. However, atmospheric turbulence and energy attenuation will seriously affect communication quality and ...
Xiaoke Zhang +11 more
doaj +1 more source
Stochastic Backpropagation for Coherent Optical Communications [PDF]
, 2011 We present stochastic backpropagation, a novel maximum a posteriori detection method for coherent optical communication. The proposed detector is shown to outperform conventional backpropagation in a scenario where nonlinear phase noise is the dominant ...
Agrell, Erik +7 more
core +1 more source
Classical capacity of the lossy bosonic channel: the exact solution
, 2003 The classical capacity of the lossy bosonic channel is calculated exactly. It is shown that its Holevo information is not superadditive, and that a coherent-state encoding achieves capacity. The capacity of far-field, free-space optical communications is
A. S. Holevo +11 more
core +1 more source
Harnessing machine learning for fiber-induced nonlinearity mitigation in long-haul coherent optical OFDM [PDF]
, 2018 © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).Coherent optical
Aldaya, Ivan +5 more
core +2 more sources
IEEE Photonics Journal, 2015 Digital coherent superposition (DCS) for optical orthogonal frequency-division multiplexing (OFDM) subcarrier pairs with Hermitian symmetry can simultaneously reduce the inter-carrier interference (ICI) from laser phase noise and cancel the fiber ...
Jing Zhang +7 more
doaj +1 more source
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 +1 more source
Amplitude-Coherent Detection for Optical Wireless Communications: Opportunities and Limitations
IEEE Open Journal of the Communications Society, 2020 The proliferation of ubiquitous computing applications created a multi-dimensional optimization problem that includes several conflicting variables such as spectral efficiency, complexity, power consumption, delay, and error probability.
Mohammad A. Al-Jarrah +3 more
doaj +1 more source
Orthogonal chirp division multiplexing for coherent optical fiber communications [PDF]
, 2016 In this paper, we propose an orthogonal chirp division multiplexing (OCDM) technique for coherent optical communication. OCDM is the principle of orthogonally multiplexing a group of linear chirped waveforms for high-speed data communication, achieving ...
Ouyang, Xing, Zhao, Jian
core +1 more source