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:
Mar. 11, 2008
Filed:
Jul. 11, 2003
Frederick Marcel Van Der Vliet, Pasadena, CA (US);
Harm Van Weerden, Enschede, NL;
Frederick Marcel Van Der Vliet, Pasadena, CA (US);
Harm Van Weerden, Enschede, NL;
Gemfire Europe Limited, Livingston, GB;
Abstract
A 1×2 splitter design having low loss is described. The splitter has a non-adiabatic tapered waveguide () connected between a substantially single-mode input waveguide () and two output waveguides (). The non-adiabatic tapered waveguide widens in width towards the output waveguide, and merges substantially continuously with the input waveguide in a direction parallel to the optical axis of the input waveguide. This keeps radiation mode generation to a minimum which, in turn, keeps insertion loss low. In the described embodiment, the non-adiabatic taper shape is based on a perturbed cosine function. The 1×2 splitter can be cascaded with other such splitters in order to build a 1×2N splitter design.