Optical device

Optical waveguides – Directional optical modulation within an optical waveguide – Electro-optic

Reexamination Certificate

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Details

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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