Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hitoshi Suzuki0
Hiroshi Ishikawa0
Makoto Horie0
Tomoyuki Hakuta0
Date of Patent
May 13, 2008
0Patent Application Number
115824580
Date Filed
October 18, 2006
0Patent Primary Examiner
Patent abstract
In a multiple optical waveguide device, a transparent plate is bonded or joined on the top surface of a clad with which optical circuits and quartz glass substrates are covered, and optical reflection film is provided on the fringing area or the whole area of a joint surface of the transparent plate with the clad. Optical circuits or waveguide patterns can be recognized easily by visual inspection.
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