山西电力主干波分复用智能网状网的建设

波分复用技术在长途通信中已经得到了广泛的应用,但传统的波分复用技术给运维带来了诸多不便.文章从山西电力通信网及现网的各类业务需求出发,介绍了山西电力主干光纤波分复用智能网状网建设的网络建设情况,详细说明网络中采用的设备板卡的应用及配置,并以朔州变为例进行阐述.     

电力系统光纤传输网络在线监测系统的设计分析

提出了1种利用光时域反射仪测试技术,结合波分复用技术、全球定位技术的电力系统光纤传输网络在线监测方案,为电力系统通信调度部门对光纤传输网络的日常维护提供了一个自动化的监测维护平台。     

波分复用技术在电力信息城域网络中的应用

介绍辽宁省电力有限公司探索利用有线电视网络光纤通道,采用波分复用技术,扩大信息网络规模,在中心城区解决城域网络的通道新途径和在辽宁电力信息网络系统中应用实例。     

密集波分复用技术及全光网络

密集波分复用技术和全光网络已成为当前光通信的研究热点。密集波分复用技术具有超大容量、对数据信号“透明”、组网灵活等传统光纤通信技术无法比拟的优点,成为未来光纤通信的支撑技术,也成为全光网络的关键技术之一;全光网络是指对信号的传输与处理等均在光域中进行,全光网络与目前传统的通信网络相比容量更大、可扩充性和可重构性更强、网络结构更简单、对数据完全“透明”。文中对密集波分复用技术、密集分波分复用系统的构成、全光网络的概念及其网络形式进行了介绍。     

光纤复合架空地线(OPGW)及其新发展

讨论了光纤复合架空地线（OPGW）的几种常见结构及其特点，讨论了一种新型OPGW的结构和特点，介绍了一种连续OPGW的新方法，最后讨论了波分复用技术（WDM）在OPGW通信网中的应用。     

县级供电企业供电所通信网络全覆盖实施和应用

为切实解决供电所信息通信网络存在的问题,推进供电所信息通信网络建设,国网古田县供电公司将按照网省公司“专用光纤和租用通道”相结合的技术要求,采取“两步走”措施,进行网络带宽质量较差的供电所改造和网络质量提升管理.文章主要介绍了信息通信网络建设的步骤、要求、实施原则等,并分析了实施效果。     

光纤通信技术在电力系统的应用

详细介绍了光纤通信技术在电力系统中的应用。内容包括有同步数字系列技术 ,异步转移模式技术 ,波分复用技术 ,光放大器以及光纤通信在城网及农网改造、实现配网自动化、计算机网络方面的应用等。     

宣城电力光通信网络优化改造分析

随着电网建设的发展,越来越多的变电站（所）投入运行,地区供电公司所属光通信站点逐年增加,通信网络结构也日趋复杂化。对宣城电力光纤通信网进行介绍,提出了网络改造方案,分别从网络资源利用率、网络延伸性．备品备件、网管系统、同步和维护故障分析6方面因素,对优化前后的网络结构进行分析与比较。     

DWDM技术进展及光复用器

随着科学技术的发展，光纤通信已成为通信领域的一个重要分支。当前，光纤通信技术的研究十分活跃。文中简要介绍了密集波分复用技术(DWDM)的发展、演变及应用情况，并对光复用器原理和特性进行了探讨和比较。     

SDH和WDM光纤技术在电力系统通信中的应用

简述了光纤复用方式的发展，SDH环网技术、WDM波分复用技术的概念，及两种技术的融合。并介绍了SDHoverWDM技术在浙江省电力通信网中的应用，及实施要点。     

DWDM: shaping the future communications network

This paper describes the increase in the number of optical carriers per single fiber, a technology known as wavelength division multiplexing (WDM). This successful technology takes advantage of existing glass or synthetic fiber. WDM greatly simplifies the traditional signal regeneration since optical amplification is much simpler and more cost effective than single channel amplification. However, network bandwidth elasticity is best addressed with WDM. However photonic devices performing in the low-loss spectral band have enabled more than a single wavelength in the same fiber. Thus, DWDM technology exhibits an inherent flexibility.     

WPON技术在电力光纤专网通信中的应用

随着光通信技术的快速发展,音频、视频和数据业务得到广泛应用,国内外通信厂商和科研机构结合市场的需求和应用,不断推出新的产品和技术,PON正是当前光通信行业的热点技术.其中EPON、GPON是当前比较流行的技术,这2种技术都是基于时分复用,基本可以满足目前业务的发展.文章所探讨的WPON技术是基于波分复用的无源光网络,可以提供更高的速率,支持更多业务,传输距离更远,扩展性和扩容性更强,安全性更高,维护更方便,并且保证已有设备和业务不受影响,特别适合电力、交通、石油等专网业务运行.     

Semiconductor optical space switches

This paper reviews the various optical space switch structures on III-V semiconductor material. Their characteristics are discussed in the context of optical transport and switching network applications exploiting wavelength division multiplexing     

Theoretical and experimental study on white light interferometric sensing network with double-ring topology

A white-light interferometric fiber-optic sensing network based on the double-ring topology is demonstrated, which can be applied to the measurements of quasi-distributed strain and temperature in a smart structure. In order to increase the multiplexing capacity, decrease the measurement cost of each sensor, and improve the ability of reliability of the sensor network, a double-port interrogating technology was used. The double-ring fiber optical sensing network based on the space division multiplexing (SDM) is further developed. The low coherent multiplexing principle in the double-ring network structure is analyzed. Based on the optical path matching condition of SDM, the intensity characteristic of the interference signal in the sensor is deduced. The characteristics of the double-ring sensing network connecting 9 sensors and its property of robust resisting destruction are verified by experiments, and the results are analyzed and discussed. __________ Translated from Acta Optical Sinica, 2005, 25(6) (in Chinese)     

Photons vs. electrons [all optical network]

The article addressed a number of questions pertinent to the development of all optical networks (AON). Was one possible? And what optical technology developments were needed to get there? Today, most wavelength division multiplexing (WDM) optical networks deployed still have one main network element at intermediate nodes with some electronic components. One primary component is the optical crossconnect (OXC), or optical switch. It does an optical-electrical-optical (OEO) conversion at some point to route the lightpaths to their next hop or destination because routing and switching technology is still based on electronics. This OEO conversion is one of the controversies that experts in this area deal with these days. Some say an AON is not quite there yet due to some technical issue such as lack of wavelength conversion, lack of signal regeneration at intermediate nodes and complex network management. Others say eliminating the electronic components in these network elements will solve some overall performance concerns such as bit-rate dependency and limited speed scalability. Also, there are others who propose a "semi-optical" network, eliminating a big part of the electronics but not entirely replacing them     

Next generation networks

The forces for high speed, high capacity data services are driving the next generation network architecture toward a packet network. These next generation networks are basically of two types: wired networks and wireless networks. Changes in network services, technology and regulation are creating a golden era of network innovation. Much is certain in this evolution. For instance, the networks will have a shared, packet-based, optical-core network using dense wavelength division multiplexing (DWDM) optical transport with optical add/drop and multiplexing. Wireless communications is expected to be a major driver for growth in the telecommunications industry over the next decade. It will become a cornerstone of the information society. Future networks (both wireless and wireline) of the type described here will pave the way for an environment in which information will be made more portable, personal and affordable. They will achieve the ultimate goal of communications-communications from anywhere to anywhere-clear as a bell     

电力线宽带载波通信在智能配网中的应用

随着智能配电网的建设发展,电力线宽带载波可以成为现有的电力通信光纤骨干网络的延伸或补充.文章论述了基于正交频分复用技术的电力线宽带载波通信在配网中的应用,在10 kV配网中压系统中,传输带宽可达到10 M以上,满足配网中各种业务的需求,提供了更高的频谱利用率、更快的通信传输速率、更好的抗信道衰弱性能以及更高的可靠性.     

智能电网下超长跨距光纤通信关键技术研究

超长跨距光纤通信承担着骨干网如铁路、电力、石油等专用网的信息传输业务。随着智能电网建设的推进,信息业务规模逐渐增大及人们对通信带宽的需求日益增长,这都对通信特别是骨干网通信提出了越来越高的要求。其特点表现为信息容量大,通信距离长,通信质量高,系统可靠性高,投资运营成本小,易于升级扩容,这都增加了信息传输的难度。针对WDM（WavelengthDivisionMultiplexing）超长跨距光通信几个关键技术进行探讨和举例,并对目前国际上一些先进的研究成果进行分析。     

存储区域网络在电力通信中的应用

随着电力通信行业及光纤传输技术的快速发展,维持电力各项系统稳定运行的数据量也与日俱增,急需完成数据的存储、保护、备份和复制任务,并力争达到最优性价比。存储区域网络(storage area network,SAN)是一种提供在计算机与存储系统之间数据传输的高速网络,专注于企业级存储的各类需求。主要讨论SAN网络中裸光纤(dark fiber)或波分复用(wavelength division multiplexing,WDM)连接,同步光纤网(synchronous optical network,SONET)连接和IP网络连接3种适合电力通信系统的连接方式,比较其优缺点,并给出电力通信系统中适用的解决方案。