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军衔等级:

  大将

注册:2007-8-29
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发表于 2007-9-7 15:23:00 |只看该作者 |倒序浏览
<strong><font face="黑体" color="#1ae66b">&nbsp; </font></strong><a name="_Toc488770273"><strong><font color="#1ae66b"><font lang="ZH-CN" face="黑体">光纤接入网(</font>OAN<font lang="ZH-CN" face="oúì?,SimHei">:</font>Optical Access Network<font lang="ZH-CN" face="oúì?,SimHei">)</font></font></strong></a><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">
                </font><p align="justify"><font color="#1ae66b">&nbsp;&nbsp; 光纤接入网指在接入网中采用光纤作为传输媒介来实现用户信息的传送。随着计算机技术及多媒体技术的发展,铜线传输的弱点暴露无疑,尽管采取了一些改进措施和新技术,但仍难以满足需要。光纤接入网的结构见图</font><font color="#1ae66b"><font face="宋体, MS Song" size="3">2.2-1</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">,本书主要详细讲解光纤接入网。</font></font></p></font><font color="#1ae66b"><font face="宋体, MS Song" size="3">2.2-1</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">,本书主要详细讲解光纤接入网。</font></font><p align="center"><font color="#1ae66b"><img height="155" src="file:///D:/Documents%20and%20Settings/admin/Local%20Settings/Temp/Rar$EX01.250/中兴接入网培训.files/1-1-1.17.gif" width="579" border="0" alt=""/></font></p><font lang="ZH-CN" face="??ì?,SimSun" size="3"><p align="justify"><font color="#1ae66b">光传输通信体系有准同步数字体系</font><font color="#1ae66b"><font face="宋体, MS Song" size="3">DH</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">(</font><font face="宋体, MS Song" size="3">lesiochronous Digital Hierarchy</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)和</font><font face="宋体, MS Song" size="3">SDH</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">(</font><font face="宋体, MS Song" size="3">Sychronous Digital Hierarchy</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">),复用方式主要采用</font><font face="宋体, MS Song" size="3">WDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">、</font><font face="宋体, MS Song" size="3">DWDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">、</font><font face="宋体, MS Song" size="3">SCM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">、</font><font face="宋体, MS Song" size="3">TCM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">、</font><font face="宋体, MS Song" size="3">SDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">或</font><font face="宋体, MS Song" size="3">ON</font></font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">。</font><ol><ol><ol><ol><ol><li><font color="#1ae66b">波分复用WDM技术 </font><p align="justify"><font color="#1ae66b">在一根光纤上同时传送多个波长不同的光载波使传输能力成倍增加的技术称为光的波分复用(</font><font color="#1ae66b"><font face="宋体, MS Song" size="3">Opitical Wavelength –Division Multiplexing OWDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)。一般当相邻两个峰值波长间隔在</font><font face="宋体, MS Song" size="3">50-100nm</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">时称为波分复用(</font><font face="宋体, MS Song" size="3">WDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)系统,当相邻两个峰值波长间隔在</font><font face="宋体, MS Song" size="3">1-10nm</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">时称为密集波分复用(</font><font face="宋体, MS Song" size="3">Dense WDM DWDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)系统,当相邻两个峰值波长间隔小于</font><font face="宋体, MS Song" size="3">1</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">时称为光频分复用(</font><font face="宋体, MS Song" size="3">Optical Frequency Division Multiplexing OFDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">或</font><font face="宋体, MS Song" size="3">FDM</font></font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">)系统。</font><li><font color="#1ae66b">副载波复用(Subcarrier Multiplexing SCM)技术 </font><p align="justify"><font color="#1ae66b">将多个基带信号分别调制不同的电载波(称为副载波),再对这些经过频分复用的电信号群对一个光源进行调制。优点是技术成熟,易于实用化。</font></p></li><li><font color="#1ae66b">时分复用(Time Division Multiplexing TCM)技术 </font><p align="justify"><font color="#1ae66b">光的时分复用与电的时分复用类似,将一桢分为</font><font face="宋体, MS Song" color="#1ae66b" size="3">n</font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">个时隙,每个时隙只传输固定的信道。</font><li><font color="#1ae66b">空分复用(Space Division Multiplexing SDM)技术 </font></li><p align="justify"><font color="#1ae66b">利用空间分割构成不同的信道进行光复用技术的复用方法。特点是复用简单,各个信道可以采用不同的波长。</font></p></font></p></li></font></p></li><li><font color="#1ae66b">副载波复用(Subcarrier Multiplexing SCM)技术 </font><p align="justify"><font color="#1ae66b">将多个基带信号分别调制不同的电载波(称为副载波),再对这些经过频分复用的电信号群对一个光源进行调制。优点是技术成熟,易于实用化。</font></p></li><li><font color="#1ae66b">时分复用(Time Division Multiplexing TCM)技术 </font><p align="justify"><font color="#1ae66b">光的时分复用与电的时分复用类似,将一桢分为</font><font face="宋体, MS Song" color="#1ae66b" size="3">n</font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">个时隙,每个时隙只传输固定的信道。</font><li><font color="#1ae66b">空分复用(Space Division Multiplexing SDM)技术 </font></li><p align="justify"><font color="#1ae66b">利用空间分割构成不同的信道进行光复用技术的复用方法。特点是复用简单,各个信道可以采用不同的波长。</font></p></font></p></li><li><font color="#1ae66b">空分复用(Space Division Multiplexing SDM)技术 </font></li></ol></ol></ol></ol></ol></font></p></font><font color="#1ae66b"><font face="宋体, MS Song" size="3">DH</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">(</font><font face="宋体, MS Song" size="3">lesiochronous Digital Hierarchy</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)和</font><font face="宋体, MS Song" size="3">SDH</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">(</font><font face="宋体, MS Song" size="3">Sychronous Digital Hierarchy</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">),复用方式主要采用</font><font face="宋体, MS Song" size="3">WDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">、</font><font face="宋体, MS Song" size="3">DWDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">、</font><font face="宋体, MS Song" size="3">SCM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">、</font><font face="宋体, MS Song" size="3">TCM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">、</font><font face="宋体, MS Song" size="3">SDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">或</font><font face="宋体, MS Song" size="3">PON</font></font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">。</font><ol><ol><ol><ol><ol><li><font color="#1ae66b">波分复用WDM技术 </font><p align="justify"><font color="#1ae66b">在一根光纤上同时传送多个波长不同的光载波使传输能力成倍增加的技术称为光的波分复用(</font><font color="#1ae66b"><font face="宋体, MS Song" size="3">Opitical Wavelength –Division Multiplexing OWDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)。一般当相邻两个峰值波长间隔在</font><font face="宋体, MS Song" size="3">50-100nm</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">时称为波分复用(</font><font face="宋体, MS Song" size="3">WDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)系统,当相邻两个峰值波长间隔在</font><font face="宋体, MS Song" size="3">1-10nm</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">时称为密集波分复用(</font><font face="宋体, MS Song" size="3">Dense WDM DWDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)系统,当相邻两个峰值波长间隔小于</font><font face="宋体, MS Song" size="3">1</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">时称为光频分复用(</font><font face="宋体, MS Song" size="3">Optical Frequency Division Multiplexing OFDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">或</font><font face="宋体, MS Song" size="3">FDM</font></font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">)系统。</font><li><font color="#1ae66b">副载波复用(Subcarrier Multiplexing SCM)技术 </font><p align="justify"><font color="#1ae66b">将多个基带信号分别调制不同的电载波(称为副载波),再对这些经过频分复用的电信号群对一个光源进行调制。优点是技术成熟,易于实用化。</font></p></li><li><font color="#1ae66b">时分复用(Time Division Multiplexing TCM)技术 </font><p align="justify"><font color="#1ae66b">光的时分复用与电的时分复用类似,将一桢分为</font><font face="宋体, MS Song" color="#1ae66b" size="3">n</font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">个时隙,每个时隙只传输固定的信道。</font><li><font color="#1ae66b">空分复用(Space Division Multiplexing SDM)技术 </font></li><p align="justify"><font color="#1ae66b">利用空间分割构成不同的信道进行光复用技术的复用方法。特点是复用简单,各个信道可以采用不同的波长。</font></p></font></p></li></font></p></li><li><font color="#1ae66b">副载波复用(Subcarrier Multiplexing SCM)技术 </font><p align="justify"><font color="#1ae66b">将多个基带信号分别调制不同的电载波(称为副载波),再对这些经过频分复用的电信号群对一个光源进行调制。优点是技术成熟,易于实用化。</font></p></li><li><font color="#1ae66b">时分复用(Time Division Multiplexing TCM)技术 </font><p align="justify"><font color="#1ae66b">光的时分复用与电的时分复用类似,将一桢分为</font><font face="宋体, MS Song" color="#1ae66b" size="3">n</font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">个时隙,每个时隙只传输固定的信道。</font><li><font color="#1ae66b">空分复用(Space Division Multiplexing SDM)技术 </font></li><p align="justify"><font color="#1ae66b">利用空间分割构成不同的信道进行光复用技术的复用方法。特点是复用简单,各个信道可以采用不同的波长。</font></p></font></p></li><li><font color="#1ae66b">空分复用(Space Division Multiplexing SDM)技术 </font></li></ol></ol></ol></ol></ol></font><font color="#1ae66b"><font face="宋体, MS Song" size="3">Opitical Wavelength –Division Multiplexing OWDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)。一般当相邻两个峰值波长间隔在</font><font face="宋体, MS Song" size="3">50-100nm</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">时称为波分复用(</font><font face="宋体, MS Song" size="3">WDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)系统,当相邻两个峰值波长间隔在</font><font face="宋体, MS Song" size="3">1-10nm</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">时称为密集波分复用(</font><font face="宋体, MS Song" size="3">Dense WDM DWDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">)系统,当相邻两个峰值波长间隔小于</font><font face="宋体, MS Song" size="3">1</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">时称为光频分复用(</font><font face="宋体, MS Song" size="3">Optical Frequency Division Multiplexing OFDM</font><font lang="ZH-CN" face="??ì?,SimSun" size="3">或</font><font face="宋体, MS Song" size="3">FDM</font></font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">)系统。</font><li><font color="#1ae66b">副载波复用(Subcarrier Multiplexing SCM)技术 </font><p align="justify"><font color="#1ae66b">将多个基带信号分别调制不同的电载波(称为副载波),再对这些经过频分复用的电信号群对一个光源进行调制。优点是技术成熟,易于实用化。</font></p></li><li><font color="#1ae66b">时分复用(Time Division Multiplexing TCM)技术 </font><p align="justify"><font color="#1ae66b">光的时分复用与电的时分复用类似,将一桢分为</font><font face="宋体, MS Song" color="#1ae66b" size="3">n</font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">个时隙,每个时隙只传输固定的信道。</font><li><font color="#1ae66b">空分复用(Space Division Multiplexing SDM)技术 </font></li><p align="justify"><font color="#1ae66b">利用空间分割构成不同的信道进行光复用技术的复用方法。特点是复用简单,各个信道可以采用不同的波长。</font></p></font></p></li></font><font face="宋体, MS Song" color="#1ae66b" size="3">n</font><font lang="ZH-CN" face="??ì?,SimSun" size="3"><font color="#1ae66b">个时隙,每个时隙只传输固定的信道。</font><li><font color="#1ae66b">空分复用(Space Division Multiplexing SDM)技术 </font></li><p align="justify"><font color="#1ae66b">利用空间分割构成不同的信道进行光复用技术的复用方法。特点是复用简单,各个信道可以采用不同的波长。</font></p></font><font size="3"><p align="justify"><font color="#1ae66b">FTTH</font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the home </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到家</font></font></p></font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the home </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到家</font></font><font size="3"><p align="justify"><font color="#1ae66b">FTTB</font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the building </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到大楼</font></font></p></font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the building </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到大楼</font></font><font size="3"><p align="justify"><font color="#1ae66b">FTTC</font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the curb </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到路边</font></font></p></font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the curb </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到路边</font></font><font size="3"><p align="justify"><font color="#1ae66b">FTTO</font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the office </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到办公室</font></font></p></font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the office </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到办公室</font></font><font size="3"><p align="justify"><font color="#1ae66b">FTTZ</font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the zone </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到小区</font></font></p></font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the zone </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到小区</font></font><font size="3"><p align="justify"><font color="#1ae66b">FTTF</font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the floor </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到楼层</font></font></p></font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the floor </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到楼层</font></font><font size="3"><p align="justify"><font color="#1ae66b">FTTN</font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the neighbor </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到邻里</font></font></p></font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the neighbor </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到邻里</font></font><font size="3"><p align="justify"><font color="#1ae66b">FTTR</font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the remote </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到远端节点</font></font></p></font><font color="#1ae66b"><font lang="ZH-CN" face="??ì?,SimSun" size="3">:</font><font size="3">Fiber to the remote </font><font lang="ZH-CN" face="??ì?,SimSun" size="3">光纤到远端节点</font></font>

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