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Narrow Spectral Linewidth Full Band Tunable Laser Based on Waveguide Ring Resonators with Low Power Consumption
Lasers tunable Silica Waveguides Semiconductor optical amplifiers
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2015/6/8
We have developed a widely tunable laser source that uses triple ring resonators with narrow spectral linewidth. A spectral linewidth of less than 100 kHz is obtained for all wavelength channels acros...
Impacts of Waveband Capacity and Waveband Add/Drop Ratio on the Performance of ROADM-Ring Connecting Hierarchical Optical Path Cross-Connects
Networks assignment routing algorithms Networks ring
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2015/6/5
We analyze the performance of a multiple-ROADM-ring connected network that utilizes Hierarchical Optical Cross-Connects (HOXC). We clarify the impacts of the waveband capacity and waveband add/drop ra...
Topology-Optimized Slow-Light Couplers for Ring-Shaped Photonic Crystal Waveguide
Integrated optics devices Photonic crystals Waveguides planar
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2015/6/4
We demonstrate a topology-optimized coupler for a ring-shaped photonic crystal waveguide to improve the coupling of light located in the slow-light regime. An enhancement of the coupling efficiency of...
Characterization of Integrated Polarization-Diversity DPSK Demodulator with Two-Dimensional Chirped Grating Couplers and Ring Resonators
Integrated optics devices Fiber optics communications
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2015/6/4
We describe the design and experimental results of an integrated polarization-diversity DPSK demodulator. The integration of 2-D chirped grating couplers enabled polarization-diversity operation with ...
Silicon-on-Insulator Ring-Shaped Photonic Crystal Waveguides for Refractive Index Sensing
Integrated optics devices Sensors Photonic crystals
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2015/6/4
We present an integrated refractive index sensor based on a ring-shaped photonic crystal waveguide. We measured the shift in cut-off wavelength for different ambient refractive indices and we observed...
Improved pores detection in fingerprints by applying ring led’s
biometrics fingerprint patterns for identification and verification sensor design applied telecentric optics modulation transfer function (MTF) of an optical system optical properties of the human skin pores (Level 3) matching system performance by statistical analysis
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2011/5/9
The requirement to determine the identity of a person is becoming more and more important in
the present information society. There are a number of biometric based identification and
verification sy...
Stable tunable single-longitudinal-mode semiconductor optical amplifier erbium-doped fiber ring lasers for 10 Gbps transmission over 50 km single-mode fiber
optical fiber transmission tunable fiber ring lasers erbium-doped fiber semiconductor optical amplifier single-longitudinal-mode saturable absorber
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2011/5/9
We demonstrate a stable and tunable single-longitudinal-mode SOA-EDF ring laser for high-speed
data transmission systems. The laser is constructed by incorporating an SOA into the EDF ring
cavity. T...
Main Patterns of Variability in Beech Tree-Ring Chronologies from Different Sites in Slovenia and Their Relation to Climate
beech Fagus sylvatica Slovenia dendrochronology tree-rings local chronologies climate
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2009/11/27
Fourteen local tree-ring chronologies of beech (Fagus sylvatica L.) from different sites in Slovenia, elevations 300-1,415 m a.s.l., were constructed. Basic
statistics of the chronologies (raw, stand...
THE INFLUENCE OF CLIMATE ON TREE-RING MAXIMUM LATEWOOD DENSITY IN NORWAY SPRUCE (Picea abies (L.) Karst.) AT TWO SITES IN SLOVENIA
Norway spruce (Picea abies (L.) Karst.) climate maximum latewood density MXD densitometry
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2009/11/27
Norway spruce (Picea abies (L.) Karst.) is frequently the object of dendrochronological research owing to its distribution, wood structure and longevity. The Norway spruce chronologies published in Sl...
基于差分吸收光谱算法，使用卫星数据反演大气NO2和SO2等痕量气体柱浓度的时候，Ring效应是影响反演结果精度的一个重要因素。Ring效应是指：受太阳表面大气消光效应影响，产生称之为夫琅禾费线的暗线结构，而由于太阳光在地球大气中传输引起非弹性散射，导致观测到的夫琅禾费线变短，这个结果可以近似地认为是对夫琅禾费线的填充。研究表明，大气中的N2和O2分子的转动拉曼散射是导致Ring效应的主要原因。利用...
Theoretical And Experimental Analys Of Plastic Deformation Heat For Pim-Ring Sliding System Under Dry Friction Conditions
Sliding Friction Plastic Deformation Frictional Heat
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2009/10/15
In this study, a theoretical model which can ensure the calculation of plastic deformation heat occured at the worn surfaces due to the friction during sliding was established and the validity of the ...
Ring-coupled Mach–Zehnder interferometer optimized for sensing
Ring-coupled Mach–Zehnder interferometer optimized sensing
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2015/8/10
We demonstrate numerically that the theoretical maximum sensitivity of a ring-coupled Mach–Zehnder interferometer (MZI) optimized as a sensor is about 30% greater than the optimized sensitivity of a c...
Tree-Ring:一种结构化的应用层组播模型
应用层组播 对等网 组通信
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2009/8/3
在分析现有应用层组播协议基础上，提出Tree-Ring模型，该模型构建于Pastry之上，采用Pastry的路由与定位机制，构造一个树与环相结合的覆盖网络。实验显示，模型中70%以上的节点出度为1，80%以上的节点的相对延迟比控制在2.7以内。结果表明，Tree-Ring能有效地平衡节点负载，满足大规模网络中大内容传播的需要。
Comparison of Rectangular and Cylindrical FDTD representations on a Ring Resonator Problem
Rectangular Cylindrical FDTD representations Ring Resonator Problem
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2009/7/28
The aim of this paper is to discuss rectangular and cylindrical representations of finite-difference time-domain (FDTD) method over characteristic tests and comparisons. A ring resonator is chosen as ...
Dual-Band Split-Ring Antenna Design for WLAN Applications
Split-ring microstrip antenna dual-band
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2009/7/28
A dual-band microstrip antenna based on split-ring elements is introduced for WLAN (2.4/5.2 GHz) applications. The proposed split-ring antenna (SRA) has a compact novel design which provides about 2% ...