Optical waveguides – Planar optical waveguide
Reexamination Certificate
2006-05-22
2009-11-17
Font, Frank G (Department: 2883)
Optical waveguides
Planar optical waveguide
C385S002000, C385S003000, C385S008000, C385S009000, C385S040000, C385S130000, C385S132000
Reexamination Certificate
active
07620284
ABSTRACT:
An optical waveform shaping device includes a first waveguide portion, formed on a substrate, for transmitting the optical signal and simultaneously absorbing a portion of the optical signal, which has a signal level equal to or smaller than a predetermined value, so as to shape the optical signal; and a second waveguide portion, formed on the substrate, for transmitting the optical signal, which was transmitted through the first waveguide portion, and simultaneously amplifying the optical signal. The first waveguide portion may be formed using a saturable absorber. A first electrode for supplying electric current to the first waveguide portion so that the first waveguide portion is provided with a function of absorbing the optical signal; and a second electrode for supplying electric current to the second waveguide portion so that the second waveguide portion is provided with a function of amplifying the optical signal may also be provided.
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Dobashi Machio
Iio Shinji
Ikezawa Katsuya
Kobayashi Shinji
Miura Akira
El Shammaa Mary A
Font Frank G
Sughrue & Mion, PLLC
Yokogawa Electric Corporation
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