公开(公告)号：US09787401B2

公开(公告)日：2017-10-10

申请号：US15218240

申请日：2016-07-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sun Hyok Chang ,  Kwang Joon Kim ,  Hyun Jae Lee ,  Chan Gyo Han

IPC: H04B10/27 ,  H04B10/25 ,  H04B10/2581 ,  H04B10/2587 ,  H04B10/272 ,  H04J14/08

CPC classification number: H04B10/27 ,  H04B10/25 ,  H04B10/2504 ,  H04B10/2581 ,  H04B10/2587 ,  H04B10/272 ,  H04J14/04 ,  H04J14/08

Abstract: A Mode Division Multiplexed Passive Optical Network (MDM-PON) apparatus includes: a non-mode selective multiplexer which includes a first end where three or more single-mode optical fibers are spaced apart from each other by a predetermined distance, and a second end where cores of the three or more single-mode optical fibers are tapered such that a gap between the three or more single-mode optical fibers is narrower than the predetermined distance while the three or more single-mode optical fibers are spaced apart from each other by an equal distance; an optical line terminal (OLT) which is connected to the second end through a few-mode fiber, and transmits a downstream optical signal; and three or more optical network units (ONUs) which is connected to the first end through the three or more single-mode optical fibers, and transmits upstream optical signals.