搜索结果: 1-15 共查到“光信息技术 PON”相关记录52条 . 查询时间(0.046 秒)
PON光模块相关知识（图）
PON 光模块
2024/10/17
光模块可以分为两个大类，数通光模块和PON光模块，数通光模块是我们比较常用的光模块，一般都是用于企业网、数据中心、基站等；而PON光模块则是用于接入网（PON系统）当中。
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...
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...
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 ...
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 ...
Simple and Scalable WDM/TDMA-PON using Spectral Slicing and Forward Error Correction
Fiber optics communications Networks combinatorial network design
2015/5/22
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
2015/5/22
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...
100-km uplink transmission of 10G- and 1G-ONU co-existing TDM-OCDMA-PON system using dual-rate burst-mode receiver
Networks Optical communications
2015/5/22
In a cost-effective TDM-OCDMA-PON system without en/decoder at each ONU, the uplink dispersion-compensation-free 10 Gbps/1 Gbps-co-existing TDM x 4-OCDMA transmission over 100 km SMF is demonstrated b...
Over-Sampling based Burst-mode CDR Technology for High-speed TDM-PON Systems
Networks Optical communications
2015/5/22
We review recent progress of a over-sampling based burst-mode CDR as the key PMD device for supporting next-generation, 10Gbps capable TDM-PON systems. For the essence of circuit design, its burst-mod...