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. 04, 1990
Filed:
Nov. 13, 1989
Applicant:
Inventor:
Craig D Poole, Ocean Township, Monmouth County, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9629 ; 350 9615 ;
Abstract
A mode coupler is disclosed which utilizes a circularly symmetric perturbation in an electromagnetic waveguide. Due to the circular symmetry of the perturbation, exact cross-sectional alignment of the perturbations is not needed when several of the devices are cascaded. Further, the mode coupling response is wavelength dependent, and therefore, may be employed in electromagnetic filtering applications.