Results 71 to 80 of about 5,993 (258)

Monitoring of OSNR Using an Improved Binary Particle Swarm Optimization and Deep Neural Network in Coherent Optical Systems

Photonics, 2019
A novel technique is proposed to implement optical signal-to-noise ratio (OSNR) estimation by using an improved binary particle swarm optimization (IBPSO) and deep neural network (DNN) based on amplitude histograms (AHs) of signals obtained after ...
Xiaoyong Sun, Shaojing Su, Junyu Wei, Xiaojun Guo, Xiaopeng Tan   +4 more
doaj   +1 more source

Microresonator solitons for massively parallel coherent optical communications

, 2017
Optical solitons are waveforms that preserve their shape while propagating, relying on a balance of dispersion and nonlinearity. Soliton-based data transmission schemes were investigated in the 1980s, promising to overcome the limitations imposed by ...
Anderson, Miles H., Brasch, Victor, Freude, Wolfgang, Karpov, Maxim, Kemal, Juned N., Kippenberg, Tobias J., Koos, Christian, Kordts, Arne, Marin-Palomo, Pablo, Pfeiffer, Martin H. P., Pfeifle, Joerg, Rosenberger, Ralf, Trocha, Philipp, Vijayan, Kovendhan, Wolf, Stefan   +14 more
core   +1 more source

Opportunities, challenges and requirements for introducing space division multiplexing in fibre optical networks

IET Optoelectronics, Volume 19, Issue 1, January/December 2025.
The authors discuss opportunities, challenges and requirements for successful commercialisation of space division multiplexing (SDM) in optical networks. The authors consider recent developments in SDM technology and focus on the importance of different geometrical parameters when designing multi‐core fibres and on the design choices for shared SDM ...
Gabriele Di Rosa, Lutz Rapp
wiley   +1 more source

OSNR-Aware Modeling and Optimization of Multi-Core Fiber-Based Spectrally–Spatially Flexible Optical Networks

Telecom, 2022
We focus on the optical signal-to-noise ratio (OSNR)-aware optical path (lightpath) planning problem in spectrally and spatially flexible optical networks (SS-FONs) connected using weakly coupled multi-core fibers (MCFs) in which distance-adaptive and ...
Mirosław Klinkowski, Marek Jaworski
doaj   +1 more source

Machine Learning–Based Multiparameter Performance Predictions of Ultra‐Dense WDM FSO–FTTx Systems Under Diverse Weather Conditions

International Journal of Optics, Volume 2025, Issue 1, 2025.
Free‐space optical (FSO) communication is vital for modern wireless systems due to its high data rates, energy efficiency, secure transmission, and cost‐effectiveness. However, weather‐induced attenuation, turbulence, and pointing errors affect performance.
Ashenafi Paulos Forsido, Demissie Jobir Gelmecha, Ram Sewak Singh, Sulaiman W. Harun   +3 more
wiley   +1 more source

EVM and Achievable Data Rate Analysis of Clipped OFDM Signals in Visible Light Communication [PDF]

, 2012
Orthogonal frequency division multiplexing (OFDM) has been considered for visible light communication (VLC) thanks to its ability to boost data rates as well as its robustness against frequency-selective fading channels.
D O’Brien, F Peng, Guo Tong Zhou, H Elgala, H Elgala, H Elgala, H Kuhn, H Ochiai, H Ochiai, J Armstrong, J Armstrong, J Armstrong, J Bussgang, J Carruthers, J Kahn, J Tellado, M Abramowitz, M Grant, M Hanson, N Fernando, O Gonzalez, P Banelli, R Mesleh, Robert J Baxley, S Hranilovic, S Wilson, T Komine, T Komine, W Davenport, X Li, Zhenhua Yu   +30 more
core   +2 more sources

A 3-Dimensional Simplex Modulation Format with Improved OSNR Performance Compared to DP-BPSK [PDF]

14. ITG Symposium Photonic Networks, 2013, 2020
The novel 3-dimensional modulation format 3D-Simplex offers potentially 1.2 dB higher OSNR tolerance than DP-DPSK while exhibiting the same spectral occupancy, modulating two bits per symbol. We verify this benefit experimen-tally and evaluate the transmission performance in a non-linear environment.
arxiv  

Performance Analysis of Gray‐Coded DP‐16QAM MIMO‐FSO Systems With Coherent Detection and DSP Techniques

Journal of Computer Networks and Communications, Volume 2025, Issue 1, 2025.
The performance of a gray‐coded dual polarization‐16 quadrature amplitude modulation (DP‐16 QAM)–based multiple input multiple output (MIMO)‐FSO link using coherent detection and digital signal processing (DSP) is investigated. The MIMO link is used to mitigate geometric loss, atmospheric attenuation, and atmospheric turbulence.
Zinegnaw Libisework Gelaw, Pushparaghavan Annamalai, Hailu Dessalegn Ayalew, Eduardo Da Silva   +3 more
wiley   +1 more source

Comparing OSNR based policies for an adaptive-alternative IA-RWA algorithm applied to all-optical networks

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
We propose two policies to select the route for an adaptive-alternative routing algorithm for all-optical networks. We use the NrPSR to find the Nr routes with lower cost for a given source-destination pair according to a cost function expanded in a ...
Carmelo J. A. Bastos-Filho, Rodrigo C. L. Silva, Daniel A. R. Chaves, André V. S. Xavier, Joaquim F. Martins-Filho   +4 more
doaj   +1 more source

Impact of Out-of-Band Noise on OSNR Measurement Using Brillouin Optical Spectrum Analyzer and Its Mitigation Method

IEEE Photonics Journal, 2018
Brillouin optical spectrum analyzer (BOSA) based on stimulated Brillouin scattering (SBS) can provide ultra-high resolution, which in theory can greatly improve the optical signal-to-noise ratio (OSNR) measurement accuracy, especially for systems with ...
Yibo Zhong, Sheng Cui, Changjian Ke, Zhen Guo, Chen Xing, Haoyu Wang, Keyuan Yang, Deming Liu   +7 more
doaj   +1 more source