Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Process of manufacturing optical fibers – waveguides – or...
Reexamination Certificate
2007-02-27
2008-09-09
Font, Frank G. (Department: 2883)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
Process of manufacturing optical fibers, waveguides, or...
C065S386000, C065S429000, C385S014000, C385S050000, C385S129000
Reexamination Certificate
active
07421858
ABSTRACT:
Provided is an optical transmission substrate including: a first substrate; an optical waveguide which has clad covering a core and a periphery of the core and extends on an upper surface of the first substrate; a second substrate provided parallel to the first substrate so that a lower surface thereof contacts an upper surface of the optical waveguide; a reflection surface which is provided on a cross section of the core at an end of the optical waveguide and reflects light, which travels through the core of the optical waveguide, toward the second substrate; and a light guide which is provided in the second substrate and guides the light, which is reflected toward the second substrate, toward an upper surface of the second substrate from a position closer to the core than an upper surface of the clad.
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Fukuzawa Tadashi
Hasegawa Masaki
Dupuis Derek L.
Font Frank G.
Gibb & Rahman, LLC
International Business Machines - Corporation
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