公开(公告)号：US07912372B2

公开(公告)日：2011-03-22

申请号：US11166362

申请日：2005-06-24

申请人： Chang Hee Lee ,  Jin Serk Baik ,  Keun Youl Park ,  Seung Hyun Jang ,  Ki Man Choi ,  Hyun Sik Min

发明人： Chang Hee Lee ,  Jin Serk Baik ,  Keun Youl Park ,  Seung Hyun Jang ,  Ki Man Choi ,  Hyun Sik Min

IPC分类号： H04J14/00

CPC分类号： H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04L12/2801

摘要： The present invention relates to a passive optical network, which inexpensively improves the spectral efficiency of an access network and is capable of increasing the number of subscribers per channel by using WDM in combination with Time Division Multiplexing (TDM) or SubCarrier Multiple Access (SCMA) to expand a conventional WDM passive optical network. The passive optical network includes light providing means provided in a central office to provide broadband incoherent light; a multiplexer connected to the central office via an optical fiber to divide the light transmitted from the light providing means according to wavelengths and to multiplex upstream signals; a plurality of splitters to branch divided lights and to combine the upstream optical signals; and a plurality of subscribers connected to the splitters, the subscribers including wavelength-locked Fabry-Perot laser diodes capable of performing direct and analog modulation, and means for directly modulating lights of the Fabry-Perot laser diodes and transmitting modulated lights to the subscribers using time division multiplexing.

摘要翻译： 无源光网络技术本发明涉及无线光网络，其能够廉价地提高接入网络的频谱效率，并且能够通过结合时分多路复用（TDM）或子载波多路访问（SCMA）使用WDM来增加每个信道的用户数量， 扩展传统的WDM无源光网络。 无源光网络包括提供在中心局的光提供装置，以提供宽带非相干光; 多路复用器，经由光纤连接到中心局，以根据波长划分从光提供装置发射的光，并对上行信号进行复用; 多个分离器，分支分光，并组合上游光信号; 以及连接到分离器的多个用户，用户包括能够执行直接和模拟调制的波长锁定法布里 - 珀罗激光二极管，以及用于直接调制法布里 - 珀罗激光二极管的光并将调制光发射到订户的装置 时分复用。