Title:
OPTICAL MODULE AND OPTICAL WAVELENGTH MULTIPLEXER/DEMULTIPLEXER
Document Type and Number:
WIPO Patent Application WO/2006/006197
Kind Code:
A1
Abstract:
An optical module in which good optical coupling is attained by arranging a collimator and a filter on one substrate and reducing complicated alignment while ensuring a return loss sufficient for practical use. A plurality of wavelength selection filters (71-74) having different selection wavelengths are arranged on a substrate (50) such that filter reflection lights impinge sequentially, and fiber collimators (101-106) each comprising a combination of an optical fiber terminal having a forward end fixed with a coreless fiber and a lens are arranged on the incident optical path to the most upstream filter, the transmission optical path of each filter, and the reflection optical path of the most downstream filter. The fiber collimators are arranged alternately on one side and the other side of one substrate according to the multiplexing/demultiplexing order of light, and are set in place in V-grooves (61-66) formed in the same plane on the substrate. All V-grooves are formed in the same plane and at least one set of fiber collimators facing each other on one and the other sides of the substrate through a filter are arranged on the same axial line.
Inventors:
TAKANO TETSUO (JP)
MORITA KIYOSHI (JP)
YOKOO YOSHIATSU (JP)
MORITA KIYOSHI (JP)
YOKOO YOSHIATSU (JP)
Application Number:
PCT/JP2004/007194
Publication Date:
January 19, 2006
Filing Date:
May 26, 2004
Export Citation:
Assignee:
HOYA CORP (JP)
TAKANO TETSUO (JP)
MORITA KIYOSHI (JP)
YOKOO YOSHIATSU (JP)
TAKANO TETSUO (JP)
MORITA KIYOSHI (JP)
YOKOO YOSHIATSU (JP)
International Classes:
G02B6/28; (IPC1-7): G02B6/28
Foreign References:
| JP2003107276A | 2003-04-09 | |||
| JP2004094242A | 2004-03-25 | |||
| JP2001281493A | 2001-10-10 |
Attorney, Agent or Firm:
Aniya, Setuo (4-6-1 Iidabash, Chiyoda-ku Tokyo 72, JP)
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