Results 11 to 20 of about 6,712,674 (298)

Coherent optical communication

International Zurich Seminar on Digital Communications, Electronic Circuits and Systems for Communications., 2002
Activities associated with the development of coherent optical communication systems for application in future public broadband networks are reviewed. It is pointed out that the main future transmission medium, the optical single-mode fiber, provides an extremely high bandwidth which will have to be utilized when high-capacity-demanding digital ...
Heydt, G.
openaire   +2 more sources

Advanced DSP for Coherent Optical Fiber Communication [PDF]

Applied Sciences, 2019
In this paper, we provide an overview of recent progress on advanced digital signal processing (DSP) techniques for high-capacity long-haul coherent optical fiber transmission systems.
Jian Zhao, Yaping Liu, Tianhua Xu
doaj   +3 more sources

Wide and Deep Learning-Aided Nonlinear Equalizer for Coherent Optical Communication Systems

Photonics
In this study, we developed a wide and deep network-based nonlinear equalizer to compensate for nonlinear impairment in coherent optical communication systems.
Ziyun Jiang, Xinyu Liu, Liuchao Zhang
doaj   +2 more sources

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., Brun, Todd A., Dowling, Jonathan P., Lee, Hwang   +3 more
openaire   +2 more sources

Coherent Optical Communications

The Review of Laser Engineering, 1985
Coherent optical communication systems became possible with development of the gas laser in the early 1960s. During the decade following development of the laser, Enloe and Rodda showed homodyne detection to be possible when they successfully phase-locked two gas lasers.
T. G. Hodgkinson, D. W. Smith, Richard Wyatt, D. J. Malyon   +3 more
openaire   +3 more sources

Coherent optical binary polarisation shift keying heterodyne system in the free-space optical turbulence channel [PDF]

, 2011
In this paper, analytical and simulation results for the bit error rate (BER) performance and fading penalty of a coherent optical binary polarization shift keying (2PolSK) heterodyne system adopted for a free space optical (FSO) communication link ...
Z. Ghassemlooy, Tang, Xuan, S. Rajbhandari, Lee , Chung Ghiu, Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, W.O. Popoola, C.G. Lee, Popoola, Wasiu O., Rajbhandari, Sujan, Lee, Chung Ghiu, X. Tang, Ghassemlooy , Zabih   +12 more
core   +1 more source

Coherent polarization shift keying modulated free space optical links over a Gamma-Gamma turbulence channel [PDF]

, 2011
Problem statement: The optical signal propagating through the Free Space Optical (FSO) channel suffers from irradiance and phase fluctuations caused by the atmospheric turbulence, which results in Bit Error Rate (BER) performance degradation ...
Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, Popoola, Wasiu O., Tang, Xuan, Rajbhandari, Sujan, Lee, Chung Ghiu, Ghassemlooy , Zabih, Lee , Chung Ghiu   +7 more
core   +1 more source

High sensitivity optical coherence detector optimization [PDF]

, 2001
An optimal optical filtering scheme for an optical coherence detection system gives very high detection sensitivities (-30dB) for a partially coherent source.
Coutinho, R.C., French, H.A., Selviah, D.R., H.D. Griffiths, R.C. Coutinho, H.A. French, Griffiths, H.D., D.R. Selviah   +7 more
core   +1 more source

Broadband coherent-optical add/drop multiplexing over 400-GHz bandwidth by fiber frequency conversion

, 2022
Paper M3F.2We investigate coherent-optical subcarrier processing by fiber frequency conversion using an optical comb based beat signal to implement a broadband coherent add/drop architecture. Erasure and replacement of subcarriers over 400-GHz processing
Tanimura, T., Watanabe, S., Schmidt-Langhorst, C., Elschner, R., Kato, T., Richter, T., Schubert, C.   +6 more
core   +1 more source

Enabling Technology in High-Baud-Rate Coherent Optical Communication Systems

IEEE Access, 2020
High-baud-rate coherent optical system is essential to support the ever-increasing demand for high-speed applications. Owing to the recent progress in advanced modulation formats, over 1 Tb/s single-carrier data transmission has been achieved in the ...
Si-Ao Li, Hao Huang, Zhongqi Pan, Runze Yin, Yingning Wang, Yuxi Fang, Yiwen Zhang, Changjing Bao, Yongxiong Ren, Zhaohui Li, Yang Yue   +10 more
doaj   +1 more source