Results 31 to 40 of about 1,504,963 (315)
Review on vortex beams with low spatial coherence
Advances in Physics: X, 2019 Vortex beams with helical phase, carrying phase singularity and orbital angular momentum, have attract great attention in the past decades due to their wide applications in optical communications, optical manipulation, super-resolution imaging and so on.
Xianlong Liu, Jun Zeng, Yangjian Cai
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FPGA-Based Rate-Compatible LDPC Codes for the Next Generation of Optical Transmission Systems
IEEE Photonics Journal, 2016 In this paper, we propose a rate-compatible forward error-correcting (FEC) scheme based on low-density-parity check (LDPC) codes together with its software reconfigurable unified field-programmable gate array (FPGA) architecture.
Ding Zou, Ivan B. Djordjevic
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Decoy state quantum key distribution with two-way classical post-processing [PDF]
, 2006 Decoy states have recently been proposed as a useful method for substantially improving the performance of quantum key distribution protocols when a coherent state source is used.
C. H. Bennett +14 more
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Secure Communication Using Mesoscopic Coherent States [PDF]
Physical Review Letters, 2003 We demonstrate theoretically and experimentally that secure communication using intermediate-energy (mesoscopic) coherent states is possible. Our scheme is different from previous quantum cryptographic schemes in that a short secret key is explicitly used and in which quantum noise hides both the bit and the key. This encryption scheme can be optically
Barbosa, Geraldo A. +3 more
openaire +3 more sources
Effective Linewidth of Semiconductor Lasers for Coherent Optical Data Links
Photonics, 2016 We discuss the implications of using monolithically integrated semiconductor lasers in high capacity optical coherent links suitable for metro applications, where the integration capabilities of semiconductor lasers make them an attractive candidate to ...
Miguel Iglesias Olmedo +8 more
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Photonics, 2017 The transmission impairments of a Raman amplified link using dual-polarization 16-quadrature amplitude modulation (DP-16QAM) are experimentally characterized.
Xiaodan Pang +6 more
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Digital equalization of time-delay array receivers on coherent laser communications [PDF]
, 2017 © [2017 Optical Society of America.]. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the ...
Belmonte Molina, Aniceto
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Optics Express, 2022 The fiber-coupling efficiency of signal beams is crucial in free space optical (FSO) communications. Herein, we derived an analytical expression for the fiber-coupling efficiency of partially coherent flat-topped beams propagating through atmospheric ...
Yangsheng Yuan +9 more
semanticscholar +1 more source
10-Gb/s Long-Reach PON System With Low-Complexity Dispersion-Managed Coherent Receiver
IEEE Photonics Journal, 2015 We demonstrate 10-Gb/s transmission over more than 130 km of G.652 fiber using a simple directly modulated distributed feedback (DFB) laser and a new “chirp-managed” approach based on a low-complexity coherent receiver.
R. Corsini +3 more
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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 +3 more
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