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:
Oct. 15, 1991
Filed:
Dec. 29, 1989
Applicant:
Inventor:
Robert A Morgan, Topton, PA (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359572 ; 359574 ; 359573 ; 372 45 ;
Abstract
Substrate-supported optical device structures such as, e.g. quantum-well infrared detectors/detector arrays are provided with a grating for optical coupling. A binary, reflection grating is designed so that nh is approximately equal to .lambda./4 where n is the refractive index of the grating, h is the thickness of the grating, and .lambda. is a wavelength of interest.