Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2011-07-26
2011-07-26
Rahll, Jerry T (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S088000
Reexamination Certificate
active
07986862
ABSTRACT:
An optical transmission substrate includes an optical transmission body provided in a through hole which has excellent and uniform propagation characteristics. The optical transmission substrate includes: a substrate1formed by laminating a plurality of dielectric sheets10; and a plurality of cylindrical refractive-index distribution bodies11,each of which is made of a photosensitive polymeric material formed in a through hole10apenetrating each of the dielectric sheets, each of the refractive-index distribution body including a truncated conical core12and a periphery. Each of the cores12has a higher refractive index in the radial direction than the periphery and has a large-diameter end face and a small-diameter end face. The cores of refractive-index distribution bodies have a first core and a second core in the two adjoining dielectric sheet, and, the large-diameter end face of the first core and the small-diameter end face of the second core face each other and optically couple together.
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Kishida Yuuji
Matsubara Takahiro
DLA Piper (LLP) US
Kyocera Corporation
Rahll Jerry T
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