Results 21 to 30 of about 1,504,963 (315)
Coherent optical communications
Optical Fiber Communication, 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 +3 more
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K-Means Clustering-Aided Non-Coherent Detection for Molecular Communications [PDF]
IEEE Transactions on Communications, 2021 In this paper, we consider non-coherent detection schemes for molecular communication systems in the presence of inter-symbol-interference. In particular, we study non-coherent detectors based on memory-bits-based thresholds in order to achieve low bit ...
Xuewen Qian, M. Di Renzo, A. Eckford
semanticscholar +1 more source
Fast signal quality monitoring for coherent communications enabled by CNN-based EVM estimation
IEEE\/OSA Journal of Optical Communications and Networking, 2020 We propose a fast and accurate signal quality monitoring scheme that uses convolutional neural networks for error vector magnitude (EVM) estimation in coherent optical communications.
Yuchuan Fan +6 more
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Nature Communications, 2022 Today’s optical communication systems are fast approaching their capacity limits in the conventional telecom bands. Opening up new wavelength bands is becoming an appealing solution to the capacity crunch.
D. Kong +13 more
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IEEE Photonics Journal, 2019 Demultiplexing of high-speed Nyquist optical time-division multiplexed (N-OTDM) signal requires ultra-narrow local sampling pulse to avoid the severe inter-symbol-interference (ISI) between each tributary.
Lei Yue, Deming Kong, Yan Li, Jian Wu
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INTERFERENCE OF MULTI-MODE WEAK COHERENT STATES FOR TWIN-FIELD QUANTUM COMMUNICATION APPLICATIONS [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2019 Subject of Research. We present the results of analytical research and experimental implementation of quantum key distribution protocol based on multi-mode weak coherent states with untrusted detection node. Such states are based on interference of phase-
Vladimir V. Chistiakov +3 more
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Combined Optical and Electrical Spectrum Shaping for High-Baud-Rate Nyquist-WDM Transceivers
IEEE Photonics Journal, 2016 We discuss the benefits and limitations of optical time-division multiplexing (OTDM) techniques based on the optical generation of a periodic train of sinc pulses for wavelength-division multiplexing (WDM) transmission at high baud rates. It is shown how
Edson P. da Silva +14 more
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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
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IEEE Photonics Journal, 2019 Modulation format identification (MFI) is necessary for future elastic optical networks. We propose an MFI scheme based on the amplitude deviation analysis of the received optical communication signal.
Zhao Zhao +3 more
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Nature Photonics, 2021 In free-space optical communications that use both amplitude and phase data modulation (for example, in quadrature amplitude modulation (QAM)), the data are typically recovered by mixing a Gaussian local oscillator with a received Gaussian data beam ...
Runzhou Zhang +17 more
semanticscholar +1 more source