Title:
光デバイス
Document Type and Number:
Japanese Patent JP4756011
Kind Code:
B2
Abstract:
The invention relates to an optical device which can increase the spread of a beam diameter in the depthwise direction by a simple configuration in comparison with that by prior art devices. The optical device includes a substrate, an optical path formed on the substrate, and a diffraction propagation region, provided between the optical path and an end face of the substrate, for propagating light emitted from the optical path with diffraction. The diffraction propagation region includes a first groove, formed therein, adapted to block part of components of the propagated light in a depthwise direction of the substrate.
Inventors:
Shoji Doi
Satoshi Hasegawa
Satoshi Hasegawa
Application Number:
JP2007164630A
Publication Date:
August 24, 2011
Filing Date:
June 22, 2007
Export Citation:
Assignee:
富士通株式会社
International Classes:
G02B6/122
Domestic Patent References:
| JP2005345554A | ||||
| JP4024610A | ||||
| JP2002182050A |
Foreign References:
| WO2004092792A1 |
Attorney, Agent or Firm:
Yu Sanada