光纤通信
光纤通信:optical fiber communications
光源：light source
波长：wavelength
激光器：laser
色散：dispersion
传输介质：transmission medium
多模光纤：multi-mode fiber
长途干线：long-houl trunks
单模光纤：singer-mode fiber
带宽：bandwidth
带宽用户：wideband subscriber
纤维光学：fiber-optics
商用技术：commercial technologe
门限电流：threshod current
光检测器：photodetector
波分复用：wavelength multiplexing
纤维光网络：fiber-optic network
视频带宽：video bandwidth
长途传输：long distance transmission
中继距离：repeater spacing
已装光纤的总长度：the total length of installed fiber
长途通信系统：long-haul telecommunication system
低衰减的石英纤维：the low-loss silica fiber
衰减接近瑞利极限的光纤：fibers with losses approaching the Rayleigh limit
室温下的门限电流：room temperature threshold currents
较长波长区：the longer wavelength region
用户接入工程：subscriber access project
部件性能和可靠性的改进：improvements in component performance and reliability
已安装的光纤系统的数据速率：data rates for installed fibre optic system
每秒吉比特：gigabit per second range
波分复用：wavelength multiplexing
带宽用户环路系统：widebend subscriber loop system
多纤连接器：multifibre connectors
设计寿命：projected lifetime
光源：light source
单模光纤：single-mode fibre
分布反馈式激光器：distributed-feedback laser
信息容量：information capacity
交换体系：switching hierarchy
带宽业务：broadband services

 

同步数字系列SDH
同步数字系统：synchronous digital hierarchy
国际标准：international standard
信号格式：signal format
网络节点接口：network node interface
支路信号：tributary signals
数字交叉连接：digital cross-connection
网络管理：network management
网络维护：network maintenance
网络运营者：network operators
传输速率：transmission rate
支路映射：tributary mapping
灵活性：flexibility
用户业务：subscriber services
覆盖层：overlay levels
制造商：manufacturer
同步传输帧：synchronous transmission frame
线路终端复用器：line terminal multiplexer
分插复用器：add-drop multiplexer
再生中继器：regenerator
灵敏度：sensitivity
虚容器：virtual container
成帧字节：framing bytes
段开销：section overhead
端到端传输：end-to-end transmission
误码监视：error monitoring
信号处理节点：signal processing nodes
净负荷：payload
指针：pointer
同步传输系统：synchronous transmission system
覆盖nni的标准：the standard covering the NNI
国际标准接口：the international standard interface
直接同步复用：direct synchronous multiplexing
灵活的通信联网：flexible telecommunication networking
点对点的传输技术：point-to-point transmission technology
先进的网络管理：advanced network management
不同厂家提供的设备：the equipment supplied by different manmufacturers
SDH提供的灵活性：the flexibility provided by SDH
同步复用设备的运营者：operator of synchronous multiplexers
电信联网：telecommunication networking
支路信号：tributary signals
维护能力：maintenance capabilities
统一的电信网络基础结构：unified telecommunication network infrastructure
组件：building blocks
终端复用器：terminal multiplexer
贯通方式：through-mode fashion
同步数字交叉链接：synchronous DXC
可变带宽：arying bandwidth
各个支路信号：individual tributary signals
传输系统：transport system
光载体：optical carrier
二维图形：2-dimensional map
传输次序：the order of transmission