公开(公告)号：KR100734873B1

公开(公告)日：2007-07-03

申请号：KR1020050121985

申请日：2005-12-12

Applicant: 한국전자통신연구원

Inventor： 김병휘 ,  이우람 ,  정윤철 ,  손의승 ,  채장원

IPC: H04B10/2581 ,  H04J14/02 ,  H04B10/00

CPC classification number: H04J14/02 ,  H04J14/0221 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

Abstract: Provided are an apparatus and method for tracking a wavelength in a passive optical subscriber network in which a central base station and at least one subscriber terminal are connected via a remote node. The apparatus includes a first wavelength aligning unit multiplexing and aligning wavelengths of optical signals from a plurality of single-mode optical sources of the central base station; a second wavelength aligning unit multiplexing and aligning wavelengths of optical signals transmitted to the remote node from a plurality of single-mode optical sources of the subscriber terminal; and a third wavelength aligning unit demultiplexing and aligning wavelengths of optical signals from the second wavelength aligning unit, the third wavelength aligning unit being included in the central base station. Accordingly, when the wavelengths of passbands of a multiplexer/demultiplexer (MUX/DEMUX) of a remote station change due to a change in the ambient temperature, wavelength tracking is performed by making aligned the wavelengths of optical sources of a central base station, a multiplexer/demultiplexer, and subscriber terminals, thereby minimizing optical channel loss and enabling reliable management of WDM-PON.

公开(公告)号：KR1020070062200A

公开(公告)日：2007-06-15

申请号：KR1020050121985

申请日：2005-12-12

Applicant: 한국전자통신연구원

Inventor： 김병휘 ,  이우람 ,  정윤철 ,  손의승 ,  채장원

IPC: H04B10/2581 ,  H04J14/02 ,  H04B10/00

CPC classification number: H04J14/02 ,  H04J14/0221 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

Abstract: An apparatus and a method for tracking wavelength in a WDM(Wavelength-Division-Multiplexed) PON(Passive Optical Network) are provided to construct a reliable WDM-PON system by stably transmitting a downlink signal and an uplink signal to a subscriber terminal and a central office, respectively, even with respect to a local base station where power is not supplied. The first wavelength aligning unit multiplexes and aligns output wavelengths of plural single mode light sources at a central office. The second wavelength aligning unit multiplexes and aligns output wavelengths of plural single mode light sources received from a subscriber terminal at a local base station. The third wavelength aligning unit demultiplexes and aligns output wavelengths of the second wavelength aligning unit at the central office.

Abstract translation: 提供了一种用于跟踪WDM（波分多路复用）PON（无源光网络）中的波长的装置和方法，通过向用户终端稳定地发送下行链路信号和上行链路信号来构造可靠的WDM-PON系统， 中央办公室，即使是没有供电的本地基站也是如此。 第一波长对准单元在中心局复用并对准多个单模光源的输出波长。 第二波长对准单元将从用户终端接收的多个单模光源的输出波长复用并对齐在本地基站。 第三波长对准单元在中心局对第二波长对准单元的输出波长进行解复用和对齐。