Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
2007-01-26
2008-12-30
Wood, Kevin S (Department: 2874)
Optical waveguides
Temporal optical modulation within an optical waveguide
Electro-optic
C385S002000, C385S008000, C359S245000
Reexamination Certificate
active
07471853
ABSTRACT:
In an optical modulator according to the invention, with respect to two MZ type optical modulators connected to each other in tandem by a curved folded waveguide on an identical substrate, a longitudinal direction of an MZ type optical waveguide unit on an optical input port side is obliquely arranged to a longitudinal direction of an MZ type optical waveguide unit on an optical output port side, and a curvature radius of the curved folded waveguide is made larger than a half of an interval between the optical input/output ports to decrease a length of a feeder portion of a signal electrode corresponding to the MZ type optical waveguide unit on the input side. Therefore, a loss of an electric signal propagated through the signal electrode can be reduced.
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Bedtelyon John M
Fujitsu Limited
Staas & Halsey , LLP
Wood Kevin S
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