Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Reexamination Certificate
2008-07-10
2010-11-09
Peng, Charlie (Department: 2883)
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
C385S132000, C385S014000, C385S129000, C372S098000, C372S092000, C257S079000, C257S098000
Reexamination Certificate
active
07831124
ABSTRACT:
An active area includes a photonic-crystal optical waveguide formed by periodically arranging a plurality of holes in a primary plane direction of an active-area core layer in an active-area growth portion. A passive area includes a passive optical waveguide formed in a passive-area growth portion. An effective refractive index of a growth structure of the active-area growth portion is larger than an effective refractive index of a growth structure of the passive-area growth portion, and an active layer has a gain at a zero group-velocity point positioned on a high-frequency side of a dispersion curve of the photonic-crystal optical waveguide.
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Baba Toshihiko
Kiyota Kazuaki
National University Corporation Yokohama National University
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Peng Charlie
Tavlykaev Robert
The Furukawa Electric Co. Ltd.
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