公开(公告)号：AU7876500A

公开(公告)日：2001-06-06

申请号：AU7876500

申请日：2000-10-10

Applicant: CORNING INC

Inventor： HARSHBARGER DOUGLAS E ,  NOLAN DANIEL A ,  THOMAS LEO C ,  TRUESDALE CARLTON M

IPC: G02B6/122 ,  G02B6/26 ,  G02B6/42 ,  G02B6/14

公开(公告)号：CA2388997A1

公开(公告)日：2001-05-17

申请号：CA2388997

申请日：2000-10-10

Applicant: CORNING INC

Inventor： TRUESDALE CARLTON M ,  THOMAS LEO C ,  HARSHBARGER DOUGLAS E ,  NOLAN DANIEL A

IPC: G02B6/122 ,  G02B6/26 ,  G02B6/42 ,  G02B6/14

Abstract: A single mode waveguide coupling to a multimode fiber (14) of a high-bandwid th local optical network is made by a tapered coupler (10) that expands the spo t size of the propagating beam to fill additional modes of the multimode fiber . The tapered coupler has a core (30) surrounded by inner (32) and outer (34) layers of cladding. The core and the inner cladding layer are drawn down alo ng their length to force light from the core into the surrounding inner claddin g layer. The outer cladding layer confines the expanded beam within the core a nd inner cladding layer.