发明名称 |
METHOD AND NETWORK ARCHITECTURE FOR UPGRADING LEGACY PASSIVE OPTICAL NETWORK TO WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK BASED NEXT-GENERATION PASSIVE OPTICAL NETWORK |
摘要 |
The present invention discloses a network architecture for upgrading a legacy time division multiplexing-passive optical network (TDM-PON) to a wavelength division multiplexing-passive optical network (WDM-PON) based next-generation passive optical network (next-generation PON), wherein the legacy TDM-PON comprises: a central office (CO) having a first optical line termination (OLT); a remote node (RN) having a splitter; a single mode fiber (SMF) connecting the first OLT and the splitter; and a first group of one or more optical network terminations (ONTs) being connected to the splitter by a first group of one or more distribution fibers, and wherein the network architecture further comprises: in case that the next-generation PON is a WDM-PON, a first apparatus for combining and splitting wavelength bands being positioned between the SMF and the first OLT, in order to add a second OLT to be used for the WDM-PON within the CO or within another CO which is located in a position different from the CO, while sharing the SMF; a second apparatus for combining and splitting wavelength bands being positioned at a front terminal of the splitter; and an arrayed waveguide grating (AWG) being connected to the second apparatus for combining and splitting wavelength bands within the RN, and being connected to a second group of one or more ONTs by a second group of one or more distribution fibers within the RN or within another RN which is located in a position different from the RN.
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申请公布号 |
US2010054740(A1) |
申请公布日期 |
2010.03.04 |
申请号 |
US20090513741 |
申请日期 |
2009.05.06 |
申请人 |
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY |
发明人 |
LEE CHANG-HEE;CHOI KI-MAN;MUN SIL-GU;MOON JUNG-HYUNG;LEE HOON-KEUN |
分类号 |
H04J14/00;H04J14/02;H04J14/08 |
主分类号 |
H04J14/00 |
代理机构 |
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地址 |
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