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Choice of the perfectly matched layer boundary condition for frequency-domain Maxwell’s equations solvers
Maxwell’s equations Perfectly matched layer Finite-difference frequency-domain method
2015/8/7
We show that the performance of frequency-domain solvers of Maxwell’s equations is greatly affected by the kind of the perfectly matched layer (PML) used. In particular, we demonstrate that using the ...
A dual-layer optical disk comprised of a read-only layer and a phase-change layer was designed to perform the read-only and erasable dual-functionality in an optical disk. With the properly designed d...
Volumetric optical disks comprising multiple data layers have been proposed to multiply recording density. Owing to the presence of out-of-focus data layers, interlayer cross talk is induced in readou...
Optical Switching Layer for Rewirtable Volumetric Optical Disks
phase change DVD volumetric optical disk dual layer optical disk optical switching layer thermo-chromatic material
2011/11/28
Owing to the presence of out-of-focus recording layers in volumetric optical disks, laser energy is decreased in reading/writing the targeted active layer. A non-linear optical material as an optical ...
Enhancement of Data Transfer Rate of Phase Change Optical Disk by Doping Nitrogen in Ge–In–Sb–Te Recording Layer
Ge–In–Sb–Te recording material data transfer rate recrystallization speed nitrogen doping
2011/11/25
This work investigated the enhancement of the data transfer rate and/or recrystallization speed of Ge–In–Sb–Te recording material by nitrogen doping. The effects of nitrogen content on the dynamic pro...
Synthesis of Chained Achromatic Layer Systems Forming Controlled Low Transmittance Bands
Thin Films Design Light Propagation
2013/1/30
The approach utilized in the design of achromatic periods formed of two layers a high-index and a low-index is developed by combining the first two periods together. These two periods are therefore re...
MT-like Multi layer 48-channel Polymer Waveguide Connector using Novel Passive Alignment Structure
Optics in computing Optical interconnects
2015/5/25
We present MT-like multi-layer 48-channel and 108-channel polymer waveguide array connectors which will become important for high-channel count optical interconnect. We used a novel alignment structur...
A Novel Optical Burst Ring Network with Optical-Layer Aggregation and Flexible Bandwidth Provisioning
Network ring All-optical networks
2015/5/22
A novel optical burst ring network is proposed by employing fixed-tuned transmitters rather than fast tunable lasers. All-optical traffic aggregation/bypass at network nodes significantly reduces the ...
Multi-Layer Grooming and Routing in Packet-Optical Networks Including WSONs
Multi-Layer Grooming Packet-Optical Network WSONs
2015/5/15
A multi-layer grooming and routing method, which considers the optical layer constraints, is proposed. This method, based on a new modeling, allows significant resource saving with respect to a layer ...
Survivable Mapping with Maximal Physical-Layer Failure-Localization Potential in IP over Transparent Optical Networks
Networks Network survivability Network optimization
2015/6/10
Physical-layer failure-localization potential is explored in finding the survivable mapped lightpaths of IP over transparent optical networks. Numerical results show that accurate or near-accurate fai...
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...
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...
Optimal Hardware Module Planning and Switch Backplane Configuration for Layer-One Traffic Grooming
Networks network optimization
2015/6/5
We present an automatic hardware module planning approach for optical transport networks. An optimal switch backplane size is identified that can achieve the most cost-effective hardware module planni...
Evaluation of Recovery Methods for Layer-1 Bandwidth on Demand Service
Recovery Methods Bandwidth Demand Service
2015/7/17
This paper proposes and evaluates recovery methods for high-availability layer-1 BoD service. It also proposes a segment recovery architecture that hides the recovery operation from the users’ view. E...
Analysis of Static Versus Fully-Dynamic Routing in IP/GMPLS over WDM Optical Networks with Physical-Layer Impairment Constraints
Static Versus Fully-Dynamic Routing WDM Optical Networks Physical-Layer Impairment Constraints
2015/7/17
We investigate static and dynamic routing approaches in overlay IP/GMPLS over optical networks.Dynamic operation for full-wavelength services benefits from physical-layer impairment aware routing wher...