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发表于 2005-9-6 20:20:02
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E<BR>EA Electro absorption 电吸收<BR>EAM Electro absorption modulator 电吸收调制器<BR>EBL Expanding beam laser-scan 扩展束激光扫描<BR>ECC Embedded communications channel 嵌入式通信信道<BR>ECL External cavity laser 外腔激光器<BR>External cavity mode-locked semiconductor laser 外腔锁模半导体激光器<BR>ECM Echo cancellation method 回波消除法<BR>ECMLL External cavity mode-locked laser 外腔式锁模激光器<BR>ECSL Extended-cavity semiconductor laser 扩展式腔半导体激光器<BR>External cavity semiconductor laser 外腔式半导体激光器<BR>EDF Erbium-doped fiber 掺铒光纤<BR>EDFA Erbium-doped fiber amplifier 掺铒光纤放大器<BR>EDFFA Erbium-doped Fluoride fiber amplifier 掺铒氟化物光纤放大器<BR>EDFL Erbium-doped fiber laser 掺铒光纤激光器<BR>EDFLS Erbium-doped fiber laser source 掺铒光纤激光源<BR>EDFRS Erbium-doped fiber ring laser 掺铒光纤环激光器<BR>EDPA Erbium doped planar amplifier 掺铒平面放大器<BR>EDWA Erbium doped waveguide amplifier 掺铒波导放大器<BR>EE-LED Edge-emitting LED 边发射发光二极管,其光输出功率是从异质生长层之间发<BR>射出来的发光二极管。与表面发射的发光二极管相比,它通常具有较高的输出功率,<BR>与光纤和集成光路的耦合效率也较高<BR>EELS Edge-emitting laser 边发射激光器,一种边发射的发光激光器,它的发光区被限<BR>制在一边的很小部分,有限的光发射区改善了与光纤和集成光路的耦合效率<BR>EFBGL Erbium fiber Bragg grating laser 铒光纤布拉格光栅激光器<BR>EML Eroabsorption modulated laser 电吸收调制激光器<BR>EOM Electro-optical modulator 电光调制器,通常以调制信号为外加电场,改变电光晶<BR>体的双折射特性,从而达到改变光的参数的目的。电光调制和其他调制方法相比,器<BR>件结构稳固,不易失调。缺点是损耗较大,调制电压较高,调制电源功率损耗较大,<BR>调制频率与带宽很高
1 Y" O0 s2 ~ v/ w<P>EOTF Electro-optic tunable filter 电光可调谐滤波器<BR>EP Eye pattern 眼图,为评价数字传输系统的特性,把接收到的随机基带数字信号波形<BR>同步显示在示波器屏幕上。所出现的图形形状像人眼,故称为眼图。从眼图可一目了<BR>然地看出此传输系统码元间干扰的程度<BR>ER 112<BR>Ethernet 以太网<BR>F<BR>FDDI Fiber Distributed Data Interface 光纤分布式数据接口,一种光纤通信标准。采用<BR>单一的比特流格式而不是采用一组字节格式的光数据传信率。<BR>FE Fast Ethernet 快速以太网<BR>fiber-optic cable A data transmission medium that uses glass or plastic fibers, rather than<BR>copper wire, to carry modulated pulses of light; also called optical fiber.<BR>Fibre Channel A technology for transmitting data between computer devices at data rates<BR>from 100 to 400 MBps over optical fiber or copper. Fibre channel is optimized for<BR>connecting servers to shared storage devices and for interconnecting storage controllers and<BR>drives.<BR>FWM Four-wave mixing 四波混频<BR>G、H<BR>Gbps Gigabits per second 吉比特每秒<BR>GBps Gigabytes per second 吉位每秒<BR>GE Gigabit Ethernet 前兆以太网<BR>GHz Gigahertz (one billion hertz) 吉赫兹<BR>graded-index fiber 渐变折射率光纤<BR>GIMM Graded Index Plasec-Cladding Fiber 渐变折射率多模(光纤)<BR>I<BR>ILEC Incumbent local exchange carrier. Term used to describe the primary existing carriers,<BR>formerly known as Regional Bell Operating Companies (RBOCs); distinguished from new<BR>competitive carriers coming out of deregulation of the telecommunications industry.<BR>IL insertion loss 插入损耗<BR>IP Internet Protocol 网际协议,TCP/IP网络体系结构中的网际层协议,用以提供无连接<BR>的数据报服务<BR>IR Intermediate reach. Distance specification for optical systems that operate effectively</P>3 u+ p/ N/ u# H* V" G$ R) d
<P>from 3 to 20 km.<BR>ISO International Organization for Standardization. 国际标准化组织<BR>ITU International Telecommunication Union 国际电信联盟,简称国际电联<BR>ITU grid ITU标准指定激光波长,以193.1THz (1552.52 nm)为中心,基于100 GHz 频率<BR>间隔<BR>IXC Interexchange carrier 交换机间载波<BR>J、K、L<BR>lambda A data channel in a WDM or DWDM system assigned to a specific wavelength.<BR>Lambda and wavelength are sometimes used interchangeably.<BR>LAN Local area network 局域网,一种小范围内采用的高速,低误码的网络形式。以太<BR>网,FDDI光纤分布式数据接口和令牌网被广泛的应用在局域网技术中。并列的还有城<BR>域网MAN和广域网WAN<BR>Laser 激光<BR>LD laser diode 激光二极管<BR>LEC Local exchange carrier 市话载波<BR>Local exchange center 市内交换中心<BR>LED Light emitting diode 光二极管<BR>loss budget The amount of overall attenuation allowable in a system.<BR>LR Long reach 远距离<BR>Link restoration 链路恢复<BR>Local record 本地纪录<BR>Location register 位置寄存器<BR>M<BR>MAN Metropolitan area network 城域网,比局域网的范围宽一些,通常在一个城市范围<BR>内,连接全球网络的长途骨干部分和接入部分。<BR>material dispersion 材料色散<BR>Mbps 兆比特每秒<BR>MM fiber Multimode fiber 多模光纤<BR>modal dispersion 模式色散<BR>MPLS MultiProtocol Label Switching 多协议标签交换<BR>MTBF Mean time between failure. 平均故障间隔时间<BR>MUX See multiplexer 多路复用器</P>
) i% w! {2 A' j* }( B<P>N<BR>NAS Network attached storage. Central data storage system that is attached to the network<BR>that it serves. See also SAN.<BR>NDSF Non-dispersion-shifted fiber 非色散位移光纤,单模光纤的一种,零色散点在<BR>1310nm处。<BR>Nonlinearity 非线性,指电路,光电器件,光纤的信号中产生的不良因素。<BR>NZ-DSF Non-zero dispersion-shifted fiber. 非零色散位移光纤,单模色散位移光纤的一<BR>种,在1530~1550nm区色散不为零,即G.655单模光纤,用于1530~1550nm以外区域的<BR>信号传输,能够扩大传输带宽同时还减小光纤的非线性效应。<BR>O<BR>OA Optical amplifier 光放大器<BR>OADM Optical add/drop multiplexer 光插/分复用器<BR>OC Optical carrier 光载波,为SONET 光传输定义的一系列物理协议(如OC-1, OC-3,<BR>OC-12)<BR>optical channel spacing 光通道间隔<BR>optical fiber fiber optic cable 光纤<BR>optical link loss budget The range of optical loss over which a fiber optic link will operate<BR>and meet all specifications, expressed relative to the transmitter output power.<BR>OTDR Optical time domain reflectometer. 光时域反射计,利用反射测量技术测量光波导<BR>特性的一种仪器。<BR>P<BR>PDH Pleisiochronous Digital Hierarchy 准同步数字系列<BR>photodetector An optoelectronic transducer such as a PIN photodiode or avalanche<BR>photodiode.<BR>PD photodiode 光电二极管,一种能够将光转化为电的半导体器件<BR>photon 光子,一种电磁能量子<BR>photonic 光电,一种用以描述A term used to describe communications using photons,<BR>analogous to electronic for electronic communications.<BR>physical layer 物理层,开放式系统互连参考模型的首层。全光技术例如DWDM即是工<BR>作在物理层。<BR>PMD Polarization mode dispersion 偏振模式色散<BR>POS Packet over SONET. A technology in which IP packets are mapped into SONET rames</P>. Z/ w6 v9 F1 j2 o
<P>with intervening use of an ATM layer.<BR>Protocol transparency Ability of systems to transport information without being aware of<BR>higher layer protocols. Such systems are also sometimes called protocol agnostic.<BR>PSTN Public switched telephone network 公共交换电话网,用户提供电话业务的语音传<BR>输网,其交换中心分布在较广的地理范围内,并用通信线路连接起来。交换中心之间<BR>和交换中心与交换局之间遵守通信公司自己制定的信令系统。<BR>R<BR>Rayleigh scattering The scattering of light that results from small inhomogeneities of<BR>material density or composition.<BR>refractive index 折射率<BR>regenerator A device that regenerates optical signals by converting incoming optical pulses<BR>to electrical pulses, cleaning up the electrical signal to eliminate noise, and reconverting<BR>them to optical pulses for output; also called a regenerative repeater.<BR>S<BR>SAN Storage area network. A dedicated, centrally managed, secure information nfrastructure<BR>that enables any-to-any interconnection of servers and storage systems. See also NAS.<BR>SDH Synchronous Digital Hierarchy 同步数字系列,由欧洲标准制定的一种采用ATM和<BR>SONET在光纤上 European standard that defines a rate and format standards for<BR>transmission of optical signals over fiber using ATM and SONET. In contrast to PDH, SDH<BR>provides for a synchronous multiplexing scheme. See also PDH; SONET.<BR>short reach See SR.<BR>SM fiber Single-mode fiber 单模光纤,其纤芯很小,只能通过一个模式。<BR>SNR Signal-to-noise ratio 信噪比,用于衡量信号质量的参数<BR>SONET Synchronous Optical Network 同步光网络,由Bellcore开发的一个接口标准,广<BR>泛应用在电信中的光纤高速同步传输<BR>SR Short reach. Distance specification for optical systems that operate effectively up to 3<BR>km.<BR>step-index fiber Fiber that has a uniform index of refraction throughout the core.<BR>T<BR>T-carrier Generic designator for any of several digitally multiplexed telecommunications<BR>carrier systems. The two most common are T1, which transmits DS-1 formatted data at 1.544<BR>Mbps, and T3, which transmits DS-3 formatted data at 44.736 Mbps.<BR>TDM Time-division multiplexing 时分复用<BR>Transponder 转发器,用在DWDM系统中,能够接受信号,并且将其转换为波长信号</P>
7 I5 |- F b, g: k0 a; }<P>以便与其他波长复用。<BR>U、W<BR>UPSR Unidirectional Path Switched Ring 单向通道交换环<BR>WAN Wide area network 广域网<BR>Waveguide 波导,一种限制和引导电磁波传输的材料介质。光纤就是波导的一个例子。<BR>WDM Wavelength division multiplexing 波分复用器</P> |
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