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:
Aug. 03, 1993
Filed:
Apr. 29, 1992
Applicant:
Inventors:
Kumar N Sivarajan, Croton-on-Hudson, NY (US);
David G Steinberg, Stamford, CT (US);
Franklin F Tong, Stamford, CT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; G02B / ;
U.S. Cl.
CPC ...
359117 ; 359333 ; 359128 ; 359131 ; 385 14 ; 385 16 ; 385 24 ; 385 45 ; 385130 ; 385132 ;
Abstract
This invention discloses a method and apparatus for providing high speed optical tuning. With this invention, light is spatially routed through a tree of optical switches interconnected by waveguides to a selected fixed tuned optical filter in an array of such filters. Each of the optical switches can be controlled by a binary signal thereby permitting digitally controlled optical filtering.