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:
Jun. 02, 1992
Filed:
Aug. 20, 1991
Tirumala R Ranganath, Palo Alto, CA (US);
David W Dolfi, Los Altos, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
An optical circuit element for processing single mode light. The element is of the type that includes input and output waveguides that communicate with an intermediate waveguide network. The input and output waveguides are designed to support only the fundamental mode of light throughout a predetermined optical wavelength range while the waveguides of the intermediate waveguide network can support higher order modes. By maintaining adiabatic optical path transitions throughout the element, cross-coupling between the fundamental and higher order modes is avoided so that broad wavelength range single mode signal processing is achieved.