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:
Jul. 21, 1998
Filed:
Jul. 23, 1996
John E Cunningham, Lincroft, NJ (US);
Joseph E Ford, Oakhurst, NJ (US);
Keith Wayne Goossen, Aberdeen, NJ (US);
James A Walker, Howell, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A device having an optical modulation region and a photodetection region formed on a single wafer, and methods for making the device, are disclosed. In one configuration, the device consists of an off-axis nonpolar substrate that has, on one side, a region suitable for modulating an optical signal. The other side of the substrate has a region suitable for photodetection. The region suitable for modulating an optical signal includes a movable layer suspended over the substrate. As the movable layer moves under an applied voltage, the reflectivity of the modulation region changes. The photodetection region consists of a plurality of III-V layers. In a second configuration, the device consists of a III-V substrate that has a region for photodetection disposed on one surface. A region for optical modulation is disposed on the photodetection region.