Optical signal separator and method for installing it in optical axle alignment

Application Number: 00104916
Application Date: 2000.03.30
Publication Number: 1270320
Publication Date: 2000.10.18
Priority Information: 1999/3/30 JP 88583/99
International: G02B5/18;G02B6/12;G02B7/00
Applicant(s) Name: Nippon Sheet Glass Co., Ltd.
Inventor(s) Name: Nakama Kenichi;Oyama Tadashi
Patent Agency Code: 72001
Patent Agent: xiao chunjing
Abstract An optical demultiplexer has a plurality of transparent or translucent tubes combined in axially slidably interfitting relationship to each other. An input optical fiber, a collimator lens, and a diffraction grating are mounted on the tubes, preferably on end faces of the tubes. The optical demultiplexer can be assembled for centered alignment by installing the input optical fiber, the collimator lens, and the diffraction grating on the tubes, and sliding the tubes relatively to each other according to passive alignment.