搜索结果: 76-90 共查到“光信息技术 Networks”相关记录125条 . 查询时间(0.078 秒)
Development of Photonic Switching Node Prototypes for Transparent Networks
Switching packet All-optical networks
2015/6/9
Using newly developed PLZT-based OBS core node, low-loss Ether-frame transmission with application-layer connectivity is demonstrated over 92-km 2-hop field testbed. Recent progresses in developing OP...
Applicability verification of all-optical sampling based Q factor monitor for link-by-link fault management in transparent optical networks
Networks Optical communications
2015/6/9
Applicability of all-optical sampling based Q-factor monitor has been successfully verified for link-by-link fault management in transparent optical mesh networks by comparing with an electrical recei...
Quantum Communications in Reconfigurable Optical Networks:DWDM QKD through a ROADM
Fiber optics communications Quantum communications
2015/6/9
We demonstrate coexistence of classical and quantum signals for quantum key distribution in a DWDM reconfigurable networking environment using a ROADM. We show how the limiting noise mechanism can dep...
Experimental Demonstration of the Need for Carrier Ethernet in Mission Critical Networks
Fiber optics communications Networks packet-switched
2015/6/8
Comparison of circuit and packet-switched networks in handling delay-sensitive data reveals that the primary causes of latency are different in these two networks, and both can be mitigated by using C...
Accounting for PMD Temporal Correlation during Lightpath Set Up in GMPLS-controlled Optical Networks
Networks assignment routing algorithms.
2015/6/8
A novel impairment-aware lightpath provisioning scheme, which leverages PMD tempo-ral correlation, is proposed for GMPLS-controlled transparent networks. Simulations show that the scheme reduces the b...
An Information-Diffusion-Based Routing Scheme in Wavelength-Routed WDM Mesh Networks
Networks Networks assignment routing algorithms
2015/6/5
We propose a novel information-diffusion-based routing (IDBR) scheme in wavelength routed WDM mesh networks. The IDBR scheme has the fast convergence and the low bandwidth consumption of OSPF-TE while...
Novel Generation and Transmission of 2 Gbps Impulse Radio Ultra Wideband over MMF for In-Building Networks Application
Optical communications Radio frequency photonics.
2015/6/5
We propose novel generation technique of IR-UWB pulse by linearly combining two monocycles using different pulse shapes. We experimentally demonstrate DSP based BER measurement of 2 Gbps IR-UWB over m...
Optically Powered Low-Energy Demarcation Device for Monitoring FTTx Networks
Fiber optics optical communications Remote sensing sensors
2015/6/5
We demonstrate an energy-autarkic FTTx monitor. A special protocol and sophisti-cated hardware reduce the electrical operating power to 0.7μW, which can be delivered by an optical supply signal of onl...
In-Service OTDR for Passive Optical Networks
Fiber optics links subsystems Fiber measurements
2015/6/5
We propose a novel in-service optical reflectometry based on the correlation detection using a pseudo-noise signal superimposed on the downstream signal. Using the proposed technique, we demonstrate t...
We analyze the performance of six export policies for a multi-domain routing protocol in WDM networks. We show that providing many AS-disjoint paths for survivability and load-balancing does not neces...
Challenges of 40/100 Gbps deployments in long-haul transport networks on existing fibre and system infrastructure
Optical communications Modulation
2015/6/5
High-bandwidth services require faster long-haul transport networks. Meanwhile operators are not ready to make evolve significantly their fibre infrastructure based on PMD-limited G.652 fibre while th...
Efficient Routing in Heterogeneous Core DWDM Networks
Networks assignment routing algorithms network optimizatio
2015/6/5
We design a cost efficient routing algorithm and prototype a network planning tool to cost-effectively provision high-speed connections over a large carrier’s heterogeneous core DWDM network with mult...
Cross-Layer Traffic Grooming for Optical Networks with Hybrid Layer-One and Layer-Zero Signal Regeneration
Networks assignment routing algorithms
2015/6/5
We present a cross-layer traffic grooming algorithm that balances layer-one and layer-zero signal regeneration capability to achieve the lowest network design cost. The cross-layer approach shows good...
100GbE Optical Transport, Appropriate Modulation Formats, and Impact on Deployed Transport Networks
100GbE Optical Transport Appropriate Modulation Formats Impact Deployed Transport Networks
2015/6/5
We review the system requirements for 100GbE optical transport and compare possible technical solutions. Our experience, derived from modeling, laboratory experiments and field trials on deployed tran...
Homing Architectures in Multi-Layer Networks:Quantifying the Effect of ODU Switching
Fiber Optics network optimization protection and restoration
2015/6/5
Alternative homing architectures can lead to significant cost reductions. Using linear programming we quantify these reductions for IPoWDM and IPoOTN networks under a multi-layer consideration for a r...