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. 30, 2008
Filed:
Jul. 13, 2005
Young-kai Chen, Berkeley Heights, NJ (US);
Vincent Etienne Houtsma, Berkeley Heights, NJ (US);
Andreas Bertold Leven, Gillette, NJ (US);
Nils Guenter Weimann, Gillette, NJ (US);
Young-Kai Chen, Berkeley Heights, NJ (US);
Vincent Etienne Houtsma, Berkeley Heights, NJ (US);
Andreas Bertold Leven, Gillette, NJ (US);
Nils Guenter Weimann, Gillette, NJ (US);
Alcatel-Lucent USA Inc., Murray Hill, NJ (US);
Abstract
An optical integrated circuit comprises a semiconductor body, a semiconductor optical waveguide located on the body, and a bipolar phototransistor located on and optically coupled to the waveguide. In a preferred embodiment, the base region of the transistor is configured to absorb radiation propagating in the waveguide, but the emitter and collector regions are both configured not to absorb the propagating radiation. In a further preferred embodiment, the waveguide is configured to guide the radiation along a propagation axis therein, and the transistor makes an elongated footprint along the waveguide, the footprint being elongated along the direction of the propagation axis. In another preferred embodiment, the footprint is at least three times longer along the propagation axis than along a direction perpendicular thereto.