The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 2006
Filed:
Nov. 06, 2002
Tsuyoshi Aoki, Kawasaki, JP;
Yasuo Yamagishi, Kawasaki, JP;
Tsuyoshi Aoki, Kawasaki, JP;
Yasuo Yamagishi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The optical device comprises a first substratehaving a control circuit formed on; optical waveguide layerformed above the first substrate and having a refractive index changed by electro-optic effect; and second substrateshaving prism electrodesfor applying voltages to the optical waveguide layer. The control circuit and the prism electrodes are electrically connected to each other via columnar conductorsEven 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.