搜索结果: 1-15 共查到“光学工程 PON”相关记录146条 . 查询时间(0.074 秒)
Terabit+ (192 × 10 Gb/s) Nyquist Shaped UDWDM Coherent PON with Upstream and Downstream over a 12.8 nm Band
Terabit S Nyquist Shaped DWDM Coherent PON Upstream and Downstream 12.8 nm Band
2014/11/6
We experimentally demonstrate a bi-directional Terabit+ UDWDM coherent PON with Nyquist shaped 16QAM modulation, offering up to 10 Gb/s service capabilities per user/wavelength in a total spectrum of ...
TDM-PON上行信号光功率均衡器的锁模特性
光通信 光功率均衡 光注入锁定 法布里-珀罗激光器 分布反馈半导体激光器
2014/3/31
为了减小时分复用无源光网络（TDM-PON）上行信号光波长的飘移，基于TDM-PON上行信号光功率均衡器架构，采用单模激光注入锁定光网络单元（ONU）法布里-珀罗（F-P）激光器（LD）方法，研究了F-P LD输出光波长的锁模特性，包括锁模的范围、驱动电流对锁模特性的影响、锁模前后温度变化引起F-P LD光波长变化情况等。结果表明，当驱动电流为9mA时，F-P LD可被锁模的波长范围为0.38nm...
基于OFDM-PON的媒质接入控制协议设计
光接入网 媒质接入控制协议 服务质量 动态带宽分配
2013/9/17
在以太网无源光网络帧结构的基础上,针对正交频分复用无源光网络的特点,提出了一种适用于正交频分复用无源光网络的媒质接入控制协议.对多点控制协议、控制消息的结构、业务优先级等进行了设计,提出了一种提供服务质量保障的特殊情况下区别用户服务等级的动态带宽分配算法.该算法引入两级调度的机制,将带宽资源的分配分为不同优先级业务的调度和同类型业务下不同等级的光网络单元调度.文章对提出协议的时延、丢包率、吞吐量等...
基于OFDM-PON的媒质接入控制协议设计
光接入网 媒质接入控制协议 服务质量 动态带宽分配
2013/6/21
在以太网无源光网络帧结构的基础上,针对正交频分复用无源光网络的特点,提出了一种适用于正交频分复用无源光网络的媒质接入控制协议.对多点控制协议、控制消息的结构、业务优先级等进行了设计,提出了一种提供服务质量保障的特殊情况下区别用户服务等级的动态带宽分配算法.该算法引入两级调度的机制,将带宽资源的分配分为不同优先级业务的调度和同类型业务下不同等级的光网络单元调度.文章对提出协议的时延、丢包率、吞吐量等...
基于OFDM-PON的媒质接入控制协议设计
光接入网 媒质接入控制协议 服务质量 动态带宽分配
2013/6/25
在以太网无源光网络帧结构的基础上,针对正交频分复用无源光网络的特点,提出了一种适用于正交频分复用无源光网络的媒质接入控制协议.对多点控制协议、控制消息的结构、业务优先级等进行了设计,提出了一种提供服务质量保障的特殊情况下区别用户服务等级的动态带宽分配算法.该算法引入两级调度的机制,将带宽资源的分配分为不同优先级业务的调度和同类型业务下不同等级的光网络单元调度.文章对提出协议的时延、丢包率、吞吐量等...
Impact of ADC Bandwidth and Clipping Ratio on COF-PON Systems Based on Spatial Coding and Subcarrier Multiplexing
Analog-to-digital convertor (ADC) clipping ratio code-division-multiplexing (CDM) passive optical networks (PON) subcarrier multiplexing
2016/12/2
In this paper, we analyze the impact of analog-to digital convertor (ADC) bandwidth and clipping ratio on the performance of a 1 Gb/s x 15 user CDM-over-fiber-PON (COF PON) system based on 16-QAM modu...
Comparison and analysis of codes for remodulation WDM-PON with adaptive code selection
Line codes Code efficiency WDM-PON Remodulation
2016/12/2
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...
Broadband Ubiquitous Network Based on RoF-DAS over WDM-PON
Fiber optics communications Networks combinatorial network design
2015/5/26
This report is the first demonstration of RoF-DAS over WDM-PON with TDM techniques to realize a broadband ubiquitous wireless access with a gigabit-class throughput. The optical transmission performan...
Demonstration of Converged Bidirectional OFDM-m-QAM RoF and WDM-OFDM-PON Access Networks
Networks Optical communications
2015/5/26
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...
On the Interest of Chirped Lasers for AMOOFDM Transmissions in Long Distance PON Networks
Fiber optics communications Modulation
2015/5/26
We report the performance of a chirped laser in IMDD-based transmissions and we show that the interplay between laser chirp and fiber dispersion can be very attractive for long distance PONs if adapti...
Hybrid 2.5G/10G Co-existing OFDMA-PON Employing Single Receiver at the OLT
Fiber optics communications Systems
2015/5/25
A 2.5G/10G co-existing OFDMA-PON is demonstrated through 20km SSMF with 31dB loss budget. Only one receiver at the OLT and low-speed transceiver at the 2.5G ONUs are required, thereby reducing system ...
Up to 40Gb/s Optically Amplified AMOOFDM for Next Generation PON Networks
Fiber optics amplifiers oscillators Modulation
2015/5/25
We compare the performances of IMDD AMOOFDM transmissions in both amplified and unamplified configurations for long distance PON networks with 1:32 and 1:64 split ratios.Up to 40Gb/s bit rate has been...
Computationally-Efficient DSP-based MIMO Equalization for OSNR gains in 40Gb/s OFDMA-PON
Computationally-Efficient DSP-based MIMO Equalization OSNR gains 40Gb/s OFDMA-PON
2015/5/25
We present and experimentally verify a novel computationally-efficient MIMO equalization method in 40Gb/s OFDMA-PON with polarization multiplexing and direct detection. A 2.1dB DSP-based OSNR gain is ...
Real-Time Optical OFDM Transceivers for PON Applications
Fibre Optical Communications Modulation Fibres single mode
2015/5/25
Recent real-time optical OFDM (OOFDM) research progress is reviewed extensively in terms of adaptive transceiver design, intensity modulators, synchronisation techniques and network architectures. Res...
(O)FDMA PON over a legacy 30dB ODN
Fiber optics optical communications Coherent communications
2015/5/25
A reflective polarization independent carrier suppressed optical modulation system for FDMA/OFDMA PON over legacy infrastructures is proposed. A demonstrator is experimentally validated as an initial ...