公开(公告)号：US20020028039A1

公开(公告)日：2002-03-07

申请号：US09912358

申请日：2001-07-26

Applicant: Korea Advanced Institute of Science And Technology

Inventor： Chang Hee Lee ,  Hyun Deok Kim ,  Tae Won Oh ,  Shin Jeong Hun ,  Cho Yun Hee

IPC: G02B006/293 ,  G02B006/26 ,  H04J014/02

CPC classification number: G02B6/29361 ,  G02B6/2746 ,  G02B6/29383 ,  G02B6/29386 ,  G02B6/34 ,  H04B10/2504 ,  H04J14/0206 ,  H04J14/0208 ,  H04J14/0212 ,  H04J14/0213 ,  H04Q11/0005 ,  H04Q2011/0024 ,  H04Q2011/0032 ,  H04Q2011/0035

Abstract: The present invention relates to a 4-port wavelength selective router and the add/drop multiplexer using the above router. More particularly, it relates to a 4-port wavelength selective router that can effectively routes counter-propagating signals while suppressing multiple reflections generated in the bidirectional transmission systems and networks.

Abstract translation: 本发明涉及一种4端口波长选择路由器和使用上述路由器的分插复用器。 更具体地说，本发明涉及一种能够在抑制双向传输系统和网络中产生的多个反射的同时有效地路由反向传播信号的4端口波长选择性路由器。

公开(公告)号：US20020027472A1

公开(公告)日：2002-03-07

申请号：US09912548

申请日：2001-07-26

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Chang Hee Lee ,  Hyun Deok Kim ,  Tae Won Oh ,  Shin Jeong Hun ,  Cho Yun Hee

IPC: H03F007/00

CPC classification number: H04B10/2504

Abstract: The present invention disclosure a multi-stage bidirectional optical amplifier that amplifies counter-propagating signals at the same time. The multi-stage bidirectional optical amplifier in accordance with the present invention comprises two single-stage bidirectional optical amplifiers(30a, 30b), two multiple reflection suppression means(28a, 28b) and a mid-stage component(42).

Abstract translation: 本发明公开了一种同时放大反向传播信号的多级双向光放大器。 根据本发明的多级双向光放大器包括两个单级双向光放大器（30a，30b），两个多反射抑制装置（28a，28b）和一个中级元件（42）。