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:
Sep. 08, 2009
Filed:
Jun. 12, 2008
David Piede, Allentown, PA (US);
Prakash Gothoskar, Allentown, PA (US);
Margaret Ghiron, Allentown, PA (US);
Robert Keith Montgomery, Easton, PA (US);
Vipulkumar Patel, Breinigsville, PA (US);
Soham Pathak, Allentown, PA (US);
Kalpendu Shastri, Orefield, PA (US);
Katherine A. Yanushefski, Zionsville, PA (US);
David Piede, Allentown, PA (US);
Prakash Gothoskar, Allentown, PA (US);
Margaret Ghiron, Allentown, PA (US);
Robert Keith Montgomery, Easton, PA (US);
Vipulkumar Patel, Breinigsville, PA (US);
Soham Pathak, Allentown, PA (US);
Kalpendu Shastri, Orefield, PA (US);
Katherine A. Yanushefski, Zionsville, PA (US);
Lightwire, Inc., Allentown, PA (US);
Abstract
An arrangement for providing optical crossovers between waveguides formed in an SOI-based structure utilize a patterned geometry in the SOI structure that is selected to reduce the effects of crosstalk in the area where the signals overlap. Preferably, the optical signals are fixed to propagate along orthogonal directions (or are of different wavelengths) to minimize the effects of crosstalk. The geometry of the SOI structure is patterned to include predetermined tapers and/or reflecting surfaces to direct/shape the propagating optical signals. The patterned waveguide regions within the optical crossover region may be formed to include overlying polysilicon segments to further shape the propagating beams and improve the coupling efficiency of the crossover arrangement.