公开(公告)号：JPH11154934A

公开(公告)日：1999-06-08

申请号：JP17030698

申请日：1998-06-17

Applicant: KOREA ELECTRONICS TELECOMM ,  KOREA TELECOMMUN

Inventor： PARK CHANG-SOO ,  RI ZAISHO ,  LEE DONG-HO ,  RI SOAI

IPC: H04J14/00 ,  H04B10/2563 ,  H04J1/08 ,  H04J14/02 ,  H04Q11/00

Abstract: PROBLEM TO BE SOLVED: To allow even a multi-channel system of several tens or more channels to be applied to by setting N-sets of channels, where a difference between frequencies of two channels always exists, so as to form a unit group and by setting such a group repetitively and periodically so that channel interference is minimized. SOLUTION: A channels set is defined for found and optimized unequal interval channels of a proper number so that an interval of two optional channels is always different and the channels are arranged periodically. Thus, channel interference due to mixture of four optical waves through a fiber is effectively suppressed and the extension of channels is available without revision of existing channel slots. Thus, the multi-channel optical transmission system with compatibility has been realized.