搜索结果: 106-120 共查到“知识库 辐射度学和色度学”相关记录219条 . 查询时间(3.918 秒)
Long-Distance Standard Single-Mode Fiber Transmission of 40-Gbit/s 16QAM Signal with Optical Delay-Detection and Digital Pre-Distortion of Chromatic Dispersion
Long-Distance Standard Single-Mode Fiber Transmission Optical Delay-Detection and Digital Pre-Distortion Chromatic Dispersion
2011/5/21
Dispersion pre-distorted 40-Gbit/s 16QAM transmissions over 800-km standard-single mode fiber(~13300 ps/nm) using delay detection is demonstrated with large tolerance to laser phase noise (1-MHz linew...
Demonstration of Wavelength Agile Metro Node using Reflective Colorless Components
Demonstration Wavelength Agile Metro Node Reflective Colorless Components
2011/5/20
A fully reconfigurable add/drop node for use in metro DWDM networks based on a novel switched reflective architecture is demonstrated. The scheme saves power and avoids the need for expensive tunable ...
A Novel Dispersion and PMD Tolerant Clock Phase Detector for Coherent Transmission Systems
Novel Dispersion PMD Tolerant Clock Phase Detector Coherent Transmission Systems
2011/5/20
A novel clock phase detector is presented and shown to be tolerant to chromatic dispersion and PMD. The phase detector can be used in a clock recovery circuit for demodulation of 100 Gb/s coherent tra...
Performance Comparison between 120 Gbit/s RZ-DQP-ASK and RZ-D8PSK over a 480 km Link
Performance Comparison between 120 Gbit/s RZ-DQP-ASK RZ-D8PSK 480 km Link
2011/5/20
This paper experimentally presents the first direct comparison between two 120-Gbit/s 8-ary formats and show that both can be superior over different distances. The performances of two formats are als...
A Systematic Approach to Investigate the Tolerance of 53.5 GBaud 33%-RZ-DQPSK towards Optical Filtering and Residual Chromatic Dispersion based on Experiments
Systematic Approach Investigate Tolerance 53.5 GBaud 33%-RZ-DQPSK towards Optical Filtering Residual Chromatic Dispersion based Experiments
2011/5/20
We experimentally investigate 107 Gb/s 33%-RZ-DQPSK to explore its tolerance towards chromatic dispersion and narrow-band optical filtering. The results indicate that dispersion tolerance can be incre...
A Systematic Approach to Investigate the Tolerance of 53.5 GBaud 33%-RZ-DQPSK towards Optical Filtering and Residual Chromatic Dispersion based on Experiments
Systematic Approach Investigate Tolerance 53.5 GBaud 33%-RZ-DQPSK towards Optical Filtering Residual Chromatic Dispersion based Experiments
2011/5/20
We experimentally investigate 107 Gb/s 33%-RZ-DQPSK to explore its tolerance towards chromatic dispersion and narrow-band optical filtering. The results indicate that dispersion tolerance can be incre...
A Systematic Approach to Investigate the Tolerance of 53.5 GBaud 33%-RZ-DQPSK towards Optical Filtering and Residual Chromatic Dispersion based on Experiments
Systematic Approach Investigate Tolerance 53.5 GBaud 33%-RZ-DQPSK towards Optical Filtering Residual Chromatic Dispersion based Experiments
2011/5/20
We experimentally investigate 107 Gb/s 33%-RZ-DQPSK to explore its tolerance towards chromatic dispersion and narrow-band optical filtering. The results indicate that dispersion tolerance can be incre...
空间相干与入射光子能量对临床类同轴X射线相衬成像影响
相衬成像 吸收衬度传递函数 相位衬度传递函数
2011/4/25
在临床实际应用中,X射线源是一个具有有限尺寸的多色光源.基于Fresnel-Kirchhoff衍射理论,考虑空间相干的影响,新的类同轴X射线相衬成像公式被导出.分别代表吸收效应与相位效应的吸收衬度传递函数和相位衬度传递函数从新公式得到.吸收衬度传递函数和相位衬度传递函数的曲线由Matlab给出,不同源半径的最佳成像位置也被计算.理论分析结果如下:1）当光源半径足够大时空间相干效应须被考虑,减小源半...
Temporal Coupled-Mode Theory for Fano Resonance in Light Scattering by a Single Obstacle
Temporal Coupled-Mode Theory Fano Resonance Light Scattering Single Obstacle
2010/8/10
We present a theory for Fano interference in light scattering by individual obstacle, based on a temporal coupled-mode formalism. This theory is applicable for obstacles that are much smaller than the...
Combining radiationless interference with evanescent field amplification
radiationless interference
2010/8/10
The conventional approach for radiationless interference exploits the interference of evanescent components for the purpose of deep-subwavelength focusing and image formation. As a result, deep subwav...
不锈钢在甘油体系中等离子体电解渗碳层特性研究
液相等离子体电解渗碳 耐磨性 不锈钢
2010/8/1
以甘油+ 20%水溶液为电解液, 利用液相等离子体电解渗技术在AISI304不锈钢表面成功实现了快速渗碳。分析了渗碳层的组织结构, 并评估了渗碳层与GCr15钢球对磨时摩擦学行为。结果表明, 经过3m in /350 V 等离子体电解渗处理, 渗碳层深度达到85Lm, 最大显微硬度达到762 HV0. 02。干摩擦条件下, 渗碳层的磨损率比不锈钢基体降低了一个数量级。
准确测量 EMC 用双锥天线的天线系数
天线系数 标准场地法 开阔场 双锥天线
2010/6/27
阐述了用自由空间天线系数对于产品辐射骚扰测试的原因，介绍了测量自由空间天线系数的几种方法，包括即将于 2012 年发布的 CISPR 16-1-6 CD2 中双锥天线的天线系数的最新测量方法，以及目前应用比较广泛的 ANSI C 63.5：2006 中的方法。结合一系列实测数据总结了如何提高测量准确性的一些实用措施，如电缆的选用、衰减器的作用、测量仪器以及背景噪声抑制措施等。
Electronic dispersion compensation by Hadamard transformation
Modulation Optical communications Dispersion
2010/6/10
We demonstrate that the Hadamard transform can be applied to look up table (LUT)-based predistorters to simultaneously compress and optimize the LUT for dispersion-limited links.
Distributed Birefringence Measurement of Polarization Maintaining Fiber Using Transient Brillouin Grating
Fibers polarization maintaining Scattering stimulated Brillouin
2010/6/10
We propose a true distributed birefringence measurement of polarization-maintaining fiber based on transient Brillouin grating. A birefringence variation of 2.5×10 -6 along 8 m Bow-tie fiber is measur...
Impact of PMD and Nonlinear Phase Noise on the Global Optimization of DPSK and DQPSK Systems
Optical communications Phase modulation Nonlinear optics fibers
2010/6/10
Usingaglobaloptimizationalgorithm,wemaximizethereachofDPSKandDQPSKsys-tems including PMD and nonlinear phase noise at data rates ranging from 5Gbit/s to 230Gbit/s.