optical packet switching (OPS) has been the premier choice for the future Internet. After the effort of OPS researches, however, big challenges still remain unsolved, which include fast tunable wavelength conversion, ...
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We propose and experimentally demonstrate a new orthogonal frequency division multiple access-based passive optical network (OFDMA-PON) architecture supporting flexible all-optical virtual private network (VPN) with s...
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We report our recent progresses on proposing a cost-effective time and wavelength division multiplexed passive optical network (TWDM-PON), especially on the design of the high performance and low cost optical network ...
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A simple timing synchronization algorithm is proposed for IMDD optical OFDM. Accurate timing synchronization is demonstrated by simulations and experiments, with lower computation complexity. .9; 201. IEEE.
An efficient scheduling algorithm has been proposed for upstream bandwidth allocation in OFDMA PON systems to support differentiated services. Simulation result illustrates that the proposed algorithm obtains high thr...
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作者：
Li, JunhuiYu, QuanfuLiu, YuGuo, HongCREAM Group
State Key Lab. of Advanced Optical Communication Systems and Networks Inst. of Quantum Electronics School of Electronics Engineering and Computer Science Peking University Beijing 100871 China
Violation of Bell inequality cannot guarantee non-locality, thus an applicable hacking scheme on device-independent Bell test based quantum randomness expansion is given, together with a more secure upper bound on gen...
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We demonstrate polarization-based binary all-optical logic functions, such as controlled-NOT, AND and OR gates through electro-optic Pockels effect of PPLN. By using these gates with others, Complicated Boolean calcul...
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We propose and demonstrate a cost-effective wireless over optical fiber access system using frequency quintupling technique. A 2.5-Gb/s OOK signal at 60-GHz is successfully transmitted through 30-km SSMF and 1.-ft air...
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A series of quantum voting protocols of continuous variables is proposed. Three methods are employed to ensure that the quantum voting obeys some desirable rules. Entanglement is used to keep voters away from the voti...
A series of quantum voting protocols of continuous variables is proposed. Three methods are employed to ensure that the quantum voting obeys some desirable rules. Entanglement is used to keep voters away from the voting results. We enable voters to operate identically to represent the same vote to prevent the tallyman from gaining information about individual voters. We also propose an effective scheme to prevent voters from voting more than once. In both two-valued and multivalued ballot protocols, several specific constraints are set to meet the rules.
In this paper, we investigate experimentally an integrated quantum secure communication system using weak coherent {1.. Two modules are involved in the presented system. One is used for generating the secret key whi...
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In this paper, we investigate experimentally an integrated quantum secure communication system using weak coherent {1.. Two modules are involved in the presented system. One is used for generating the secret key which is obtained using continuous variable quantum key distribution scheme, and the other serves to encrypt and decrypt the real-time private data using a pure quantum cryptographic algorithm. The sifted key rate with reverse reconciliation is 8.6 and 3.9 kb/s in the quantum key distribution scheme under the individual attack and the collective attack, respectively. The system uses an all-fiber dual unbalance beam Mach-Zehnder interferometer, and is implemented with a 500 kb/s modulation rate over 27.2 km of optical fiber.
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