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:
Jan. 18, 2005
Filed:
Jan. 24, 2003
Yee Loy Lam, Singapore, SG;
Yuen Chuen Chan, Singapore, SG;
Bee Khuan Law, Singapore, SG;
Denselight Semiconductors Pte Ltd, Singapore, SG;
Abstract
The present invention relates to a semiconductor optical tap comprising: a multimode interferometer (MMI) (); an input waveguide () coupled to the MMI; a first output waveguide () coupled to the MMI; and a second output waveguide () coupled to the MMI. The first and second output waveguides () overlap (d) such that unequal portions of light are coupled from the MMI into the first and second output waveguides (). The input waveguide () and the first and second output waveguides () may have a rib structure. They may also be adiabatically tapered waveguides. The first and second output waveguides () may have different starting widths.