Results 21 to 30 of about 10,651 (253)

Accurate and Rigorous Calibration of Intradyne Coherent Receiver Using Polarization-Multiplexed Signal Generated within Intradyne Coherent Transmitter

Applied Sciences, 2020
Coherent optical transceivers offer significant advantages over direct-detect optical transceivers. However, both intradyne coherent transmitters (ICT) and intradyne coherent receivers (ICR) are more complicated and require careful calibration ...
Qiang Wang, Yang Yue
doaj   +1 more source

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, Roger Giddings, Wei Jin, Jianming Tang   +3 more
doaj   +1 more source

Generation and Transmission of High Symbol Rate Single Carrier Electronically Time-Division Multiplexing Signals

IEEE Photonics Journal, 2016
We experimentally investigate the generation and transmission of high-symbol-rate single-carrier signals based on the electronically time-division multiplexing (ETDM) method.
Junwen Zhang, Jianjun Yu
doaj   +1 more source

Modeling of Nonlinear Interference in the Same- Wavelength Bidirectional Coherent Fiber Communication Systems

IEEE Photonics Journal, 2023
A detailed theoretical study is conducted on the nonlinear interference in the same-wavelength bidirectional coherent optical fiber communication systems.
Yuan Li, Chengcheng Wu, Peili He, Wei Li, Shaohua Yu, Ming Luo, Zhongshuai Feng, Muyang Mei, Qianggao Hu, Liyan Huang, Haitao Li   +10 more
doaj   +1 more source

Coherent optical sources for communications [PDF]

Proceedings of the IEEE, 1970
The development of coherent optical sources, producing usable amounts of power, has provided a stimulus for communications research. Coherent sources in the form of lasers and parametric oscillators are available at wavelengths which span the entire optical spectrum.
Geusic, Joseph E., Bridges, William B., Pankove, Jacques I.   +2 more
openaire   +2 more sources

Phase conjugation of twisted Gaussian Schell model beams in stimulated down-conversion

Nanophotonics, 2021
Stimulated parametric down-conversion is a nonlinear optical process that can be used for phase conjugation and frequency conversion of an optical field.
dos Santos Gustavo H., de Oliveira Andre G., Rubiano da Silva Nara, Cañas Gustavo, Gómez Esteban S., Joshi Stuti, Ismail Yaseera, Souto Ribeiro Paulo H., Walborn Stephen Patrick   +8 more
doaj   +1 more source

Coherent Optical OFDM With Index Modulation for Long-Haul Transmission in Optical Communication Systems

IEEE Access, 2022
In this paper, it is proposed to enhance coherent optical orthogonal frequency-division multiplexing (OFDM) system by using index modulation in terms of bit error rate (BER) and spectral efficiency for different levels of the fiber nonlinearity.
Ahmet Guner
doaj   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source

Quantum communication with coherent states and linear optics [PDF]

Physical Review A, 2014
10 pages, 4 ...
Arrazola, Juan Miguel, Lütkenhaus, Norbert   +1 more
openaire   +2 more sources

Structure–Function Decoupling of the Sensorimotor and Default Mode Networks in Black Americans With MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Multiple sclerosis (MS) exhibits racially disparate rates of disease progression. Black people with MS (B‐PwMS) experience a more severe disease course than non‐Hispanic White people with MS (NHW‐PwMS). Here we investigated structural and functional connectivity as well as structure–function decoupling in the ...
Emilio Cipriano, Giacomo Boffa, Maria Petracca, Marta Ponzano, Nicole Graziano, Claire Wigley, Claire Riley, Jonathan Howard, Pietro Bontempi, Sylvia Klineova, Fred Lublin, Matilde Inglese   +11 more
wiley   +1 more source