作者：
Xie, GuodongDang, AnhongGuo, HongCREAM Group
State Key Laboratory of Advanced Optical Communication Systems and Networks Institute of Quantum Electronics School of Electronics Engineering and Computer Science Peking University Beijing 100871 China
Coherent differential phase-shift keying (DPSK) transmission system is very suitable for atmosphere channels. Based on Gamma-Gamma channel model, the error probability expressions of three different detection schemes ...
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作者：
Zhao, SinanLuo, BinDang, AnhongGuo, HongCREAM Group
State Key Laboratory of Advanced Optical Communication Systems and Networks Institute of Quantum Electronics School of Electronics Engineering and Computer Science Peking University Beijing 100871 China
Based on weak fluctuation theory and gamma-gamma irradiance distribution model, the combined effect of scintillation and beam wander on ground-to-satellite laser uplink communication systems is analyzed and optimum tr...
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作者：
Han, YaoqiangDang, AnhongTang, JunxiongGuo, HongCREAM Group
State Key Laboratory of Advanced Optical Communication Systems and Networks Institute of Quantum Electronics School of Electronics Engineering and Computer Science Peking University Beijing 100871 China
In this paper, we propose a correlation beacon detection scheme for optical wireless link establishment under strong interference conditions. An outdoor experiment is demonstrated and validates that the beacon can be ...
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Quantum key distribution is a new method in key distribution system in cryptography used to transmit secret key between two legitimate parties. This method is an invention in quantum cryptography as part of quantum me...
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A novel semiconductor saturable absorber based on high contrast grating is investigated for the first time. The extremely broad reflection band, low saturation fluence, and large design flexibility make it useful in m...
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Peer-to-peer (p2p) systems are a highly decentralized, fault tolerant, and cost effective alternative to the classic client-server architecture. Yet companies hesitate to use p2p algorithms to build new applications. ...
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In this paper, we propose a deterministic greedy heuristic providing a construction layout for a cost-efficient multi-layer network that is able to carry a given set of traffic demands with and without protection on d...
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ISBN:
(纸本)9781424481675
In this paper, we propose a deterministic greedy heuristic providing a construction layout for a cost-efficient multi-layer network that is able to carry a given set of traffic demands with and without protection on different layers. We apply the heuristic to different reference network topologies and protection requirements. Evaluations are conducted regarding equipment cost on different layers, blocking probability, path lengths, and number of demands affected by specific failures.
Optical phase modulator based on OIL-VCSEL is investigated for the first time. Simulation shows a directly modulated OIL-VCSEL can function as a key component in QPSK or 8PSK transmitters. Preliminary phase-shift-keyi...
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As a practical method, the passive scheme is useful to monitor the photon statistics of an untrusted source in a “Plug & Play” quantum key distribution (QKD) system. In a passive scheme, three kinds of monitor m...
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As a practical method, the passive scheme is useful to monitor the photon statistics of an untrusted source in a “Plug & Play” quantum key distribution (QKD) system. In a passive scheme, three kinds of monitor mode can be adopted: average photon number (APN) monitor, photon number analyzer (PNA), and photon number distribution (PND) monitor. In this paper, the security analysis is rigorously given for the APN monitor, while for the PNA, the analysis, including statistical fluctuation and random noise, is addressed with a confidence level. The results show that the PNA can achieve better performance than the APN monitor and can asymptotically approach the theoretical limit of the PND monitor. Also, the passive scheme with the PNA works efficiently when the signal-to-noise ratio (RSN) is not too low and so is highly applicable to solve the untrusted source problem in the QKD system.
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