公开(公告)号：WO03010904A3

公开(公告)日：2003-12-18

申请号：PCT/IB0203394

申请日：2002-07-22

Applicant: MARCONI INTELLECTUAL PTY

Inventor： PRATT MICHAEL K ,  BUABBUD GEORGE H ,  WAWRO DEBRA ,  ZUHDI MUNEER

IPC: H04B10/20 ,  H04J3/16 ,  H04J14/02 ,  H04B10/207

CPC classification number: H04J14/0226 ,  H04B10/27 ,  H04B10/272 ,  H04J14/0232 ,  H04J14/0245 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0249 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0291 ,  H04J14/0298

Abstract: A single fibre passive optical network (PON) wavelength division multiplex (WDM) overlay includes a central office (16), a fibre optic network (18-23), and a plurality of optical network termination (ONT) units (12, 14). The central office (16) has a baseline optical link that receives a baseline communication signal and converts the baseline communication signal into a downstream baseline optical signal within a first optical bandwidth, and has an additional optical link that receives a second type of communication signal and converts the second type of communication signal into a second downstream optical signal within a second optical bandwidth. The downstream baseline optical signal generated by the baseline optical link is combined with the second optical signal generated by the additional optical link to generate a broadband optical signal. The fibre optic network (18-23) is coupled to the central office and receives the broadband optical signal on at least one optic fibre. The fibre optic network splits the broadband optical signal to a plurality of fibre drops. The optical network termination (ONT) units are each coupled to a fibre drop. At least one of the ONT units is a baseline ONT unit (12) that receives the broadband optical signal form the fibre drop and splits the downstream baseline optical signal from the broadband optical signal, and at least one other of the ONT units (14) is an upgraded ONT unit that receives the broadband optical signal from the fibre drop and splits the downstream baseline optical signal and the signal and the second downstream optical signals from the broadband optical signal. In addition, the installation of the upgraded ONT unit to the PON does not effect baseline optical service to any other ONT unit.

Abstract translation: 单光纤无源光网络（PON）波分复用（WDM）覆盖包括中心局（16），光纤网（18-23）和多个光网络终端（ONT）单元（12,14） 。 中央局（16）具有基线光链路，其接收基线通信信号并将基线通信信号转换为第一光学带宽内的下行基准光信号，并具有接收第二类型通信信号的附加光链路， 将第二类型的通信信号转换成第二光学带宽内的第二下行光信号。 由基线光链路产生的下行基线光信号与由附加光链路产生的第二光信号组合以产生宽带光信号。 光纤网络（18-23）耦合到中心局，并在至少一个光纤上接收宽带光信号。 光纤网络将宽带光信号分离成多个光纤滴。 光网络终端（ONT）单元各自耦合到光纤分支。 所述ONT单元中的至少一个是基线ONT单元（12），其接收来自所述光纤波段的宽带光信号并从所述宽带光信号分离所述下行基准光信号，并且所述ONT单元（14）中的至少另一个单元 是升级的ONT单元，其从光纤降落接收宽带光信号，并从宽带光信号中分离下游基线光信号和信号以及第二下行光信号。 另外，将升级后的ONT单元安装到PON并不影响任何其他ONT单元的基线光学服务。