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:
Jan. 27, 2009
Filed:
Feb. 07, 2007
Yaakov Achiam, Rockville, MD (US);
Isaac Shpantzer, Bethesda, MD (US);
Arthur Greenblatt, Silver Spring, MD (US);
Geoffrey Harston, Laurel, MD (US);
Arkady Kaplan, Rockville, MD (US);
Pak Shing Cho, Gaithersburg, MD (US);
Yaakov Achiam, Rockville, MD (US);
Isaac Shpantzer, Bethesda, MD (US);
Arthur Greenblatt, Silver Spring, MD (US);
Geoffrey Harston, Laurel, MD (US);
Arkady Kaplan, Rockville, MD (US);
Pak Shing Cho, Gaithersburg, MD (US);
CeLight, Inc., Silver Spring, MD (US);
Abstract
The present invention provides an integrated device and a method of its fabrication and use. Two parts of the device each having an electronic circuit are aligned adjacent to each other with an accuracy of at least 1 micron. An alignment system includes two parts: a first part integrated with the first electronic circuit of the integrated device on the first substrate and a second part integrated with the second electronic circuit of the integrated device on the second substrate. The second part of alignment system includes at least one photodiode. The maximal value of the photodiode current indicates the best alignment of two parts of the integrated device. In one embodiment the integrated device is a coherent optical detector for high speed optical communications and chemical sensing. In another embodiment the integrated optical device is a coherent optical detector operating in two polarization states of light.