搜索结果: 1-15 共查到“知识库 光信息技术 WDM”相关记录88条 . 查询时间(0.068 秒)
基于交叉复用技术的OFDM-WDM光传输系统的性能分析
OFDM 交叉复用 宰阅酝 光传输系统
2014/6/12
基于正交频分复用(OFDM)与波分复用(WDM)的基本原理,构建了一套基于OFDM技术的WDM传输系统的系统模型,并对其相关系统性能进行了理论分析。基于维纳相位噪声模型,文章对OFDM系统中相位噪声引起的公共相位误差和子载波间干扰进行了分析,在此基础上深入分析了基于交叉复用OFDM技术的OFDM子载波间干扰的消除方法,降低相位噪声对系统性能的影响。最后结合理论分析结果对系统模型的相关性能进行模拟计...
基于相干光正交频分复用的WDM传输系统及其性能分析
光通信 相干光正交频分复用 波分复用 长距离传输
2012/12/14
相干光正交频分复用由于其良好的传输性能成为近年来光传输领域的研究热点，波分复用技术可以在光纤中通过增加并行波长的数量来提高系统的容量，将CO-OFDM和WDM技术结合，可以构造出高速率、大容量、低成本的光传输网络。文章首先对基于CO-OFDM的WDM传输系统的理论模型和基本原理进行了研究，然后对基于CO-OFDM的100Gb/s×32-信道WDM传输系统进行了仿真分析。并研究了该系统的传输性能。结...
Comparison and analysis of codes for remodulation WDM-PON with adaptive code selection
Line codes Code efficiency WDM-PON Remodulation
2011/10/15
In a remodulation PON, the upstream signal quality can be improved when the downstream signal is coded. But low code efficiency may result in network congestion in downlink. Based on the downlink traf...
50 GHz Spaced 4 × 40 Gbit/s WDM Transmission over 700 km Using 6 ps Bandlimited RZ Signals
Telecommunications Fiber Optics Communications Wavelength Division Multiplexing (WDM) Optical Time Division Multiplexing (OTDM)
2011/9/30
In this paper, we present 50 GHz spaced 4 ×40 Gbit/s WDM transmission over 700 km using SMF-based Effective Area Enlarged Positive Dispersion Fiber in a recirculating loop. The paper uses bandlimited ...
Demonstration of Converged Bidirectional OFDM-m-QAM RoF and WDM-OFDM-PON Access Networks
Networks Optical communications
2011/5/26
We demonstrate a novel lightwave centralized hybrid bidirectional WDM-OFDM-PON and OFDM-m-QAM RoF network. The 11.29-Gb/s OFDM-16QAM wired DL, 5.65-Gb/s OFDM-QPSK wired UL and WiMAX downstream/upstrea...
Energy-efficient Connection Provisioning in WDM Optical Networks
All-optical networks Networks assignment routing algorithms
2011/5/26
A novel energy-efficient dynamic provisioning scheme is proposed by using an intelligent load control mechanism and an auxiliary graph model. Significant reduction in total energy consumption is achie...
Defragmentation of Transparent Flexible Optical WDM (FWDM) Networks
Defragmentation Transparent Flexible Optica WDM (FWDM) Networks
2011/5/25
We introduce the network defragmentation problem for FWDM networks, formulate it,and propose heuristics. The network defragmentation process consolidates the available spectrum significantly while min...
Survivable Transparent Flexible Optical WDM (FWDM) Networks
Networks network optimization Networks network survivability
2011/5/25
We propose an efficient survivable FWDM network design algorithm for the first time.Survivable FWDM networks are efficient in terms of spectral utilization, power consumption, and cost compared to the...
Architectural Optimization of Coherent Ultra-Dense WDM based Optical Access Networks
All-optical networks Coherent communications Networks
2011/5/22
Different architectures for achieving ultra-high aggregate data rate PON are compared and optimized. An ultra-dense scheme is used to set the limits for the technology and a strategy for minimizing in...
Simple and Scalable WDM/TDMA-PON using Spectral Slicing and Forward Error Correction
Fiber optics communications Networks combinatorial network design
2011/5/22
We describe a simple and scalable WDM/TDMA PON system that uses spectral slicing and FEC in burst-mode upstream transmissions. The sensitivity was improved to -31.5 dB at a sliced bandwidth of 400 GHz...
Bidirectional 10 Gbit/s long-reach WDM-PON using digital coherent receivers
Optical Communications Coherent Communications
2011/5/22
Bidirectional transmission at 10 Gbit/s using 3.125 GBaud PDM-QPSK over 100 km of SMF is investigated. We observe no penalty for transmission of 10 GHz spaced channels. Preamplification improves the r...
A 10 Gb/s Passive-Components-based WDM-TDM Reconfigurable Optical Access Network Architecture
Optical communications Networks
2011/5/22
We propose a cost-effective, reconfigurable optical access network by employing passive components in the remote node and dual conventional optical transceivers in ONUs. The architecture is demonstrat...
OTDM-WDM Conversion Based on Time-Domain Optical Fourier Transformation with Spectral Compression
Optical communications Nonlinear optics four-wave mixing.
2011/5/21
We propose a scheme enabling direct serial-to-parallel conversion of OTDM data tributaries onto a WDM grid, based on optical Fourier transformation with spectral compression.Demonstrations on 320 Gbit...
10-Gbps Upstream Transmission for WDM-PON Using RSOA and Delay Interferometer
10-Gbps Upstream Transmissio WDM-PON RSOA Delay Interferometer
2011/5/20
We demonstrate the transmission of 10-Gbps NRZ signals over 20-km standard single-mode fiber using an RSOA in a loopback configured WDM-PON system. Significant performance improvement is achieved usin...
Line Coding for Downlink DML Modulation in λ λ-Shared, RSOA-based Asymmetric Bidirectional WDM PONs
Line Coding Downlink DML Modulation λ λ-Shared RSOA-based Asymmetric Bidirectional WDM PONs
2011/5/20
We experimentally investigate the use of various DC-balanced line codes for downlink modulation in single-fiber, wavelength-shared WDM-PON systems which employ 10-Gbps directly modulated lasers and 2....