Title:
【発明の名称】光分波器およびその組立方法
Document Type and Number:
Japanese Patent JP3355489
Kind Code:
B2
Abstract:
An optical demultiplexer has light input means, a collimator lens, a substrate with a diffraction grating formed thereon, and light detecting means for detecting light demultiplexed by the diffraction grating. The diffraction grating comprises a reflective diffraction grating having a reflecting surface. The light input means and the light detecting means face the reflective diffraction grating with the collimator lens interposed therebetween. The reflecting surface includes a light transmitting area in at least a portion thereof. An optical demultiplexer having an input optical fiber, a collimator lens, a diffraction grating having a reflecting surface which includes a partial light transmitting area, and light detecting means for detecting light demultiplexed by the diffraction grating is assembled by monitoring light having passed through the light transmitting area and adjusting the position of the optical axis of the diffraction grating.
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Inventors:
Kenichi Nakama
Application Number:
JP53359799A
Publication Date:
December 09, 2002
Filing Date:
March 11, 1999
Export Citation:
Assignee:
NIPPON SHEET GLASS COMPANY,LIMITED
International Classes:
G01J3/02; G01J3/18; G01J3/28; G02B6/34; H01L27/144; (IPC1-7): G02B27/10; G02B6/293
Domestic Patent References:
| JP777627A |
Attorney, Agent or Firm:
Kunihiko Ohashi