Optical waveguides – Directional optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
2006-12-12
2006-12-12
Font, Frank G. (Department: 2883)
Optical waveguides
Directional optical modulation within an optical waveguide
Electro-optic
C385S016000, C385S040000
Reexamination Certificate
active
07149372
ABSTRACT:
The optical device comprises a first substrate10having a control circuit formed on; optical waveguide layer40formed above the first substrate and having a refractive index changed by electro-optic effect; and second substrates14a,14bhaving prism electrodes18for applying voltages to the optical waveguide layer. The control circuit and the prism electrodes are electrically connected to each other via columnar conductors20.Even in a case where thermal expansion coefficients of the control substrate and of the light deflection substrates are very different from each other, the pins are flexed corresponding to eternal forces, whereby junction is protected from being damaged in the joining processing. Thus, the optical switch can be highly reliable.
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Aoki Tsuyoshi
Yamagishi Yasuo
Font Frank G.
Fujitsu Limited
Hughes James P.
Staas & Halsey , LLP
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