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. 13, 2005
Filed:
Dec. 09, 2002
Nagesh R. Basavanhally, Killman, NJ (US);
Mark A. Paczkowski, Andover, NJ (US);
Hong Tang, Belle Mead, NJ (US);
John D. Weld, Ledgewood, NJ (US);
Nagesh R. Basavanhally, Killman, NJ (US);
Mark A. Paczkowski, Andover, NJ (US);
Hong Tang, Belle Mead, NJ (US);
John D. Weld, Ledgewood, NJ (US);
Lucent Technologies, Inc., Murray Hill, NJ (US);
Abstract
An optical switch has an array of fibers, an optional lens, and a mirror with two-dimensional tilt adjustment. Light from the array passes through the lens, is reflected by the mirror, and passes again through the lens back towards the array. The input/output fibers are arranged in a two-dimensional pattern designed to avoid undesirable crosstalk between fibers. The pattern may include a plurality of fibers positioned around a central fiber in a circular arrangement. For a 1×8 or 8×1 switch, nine fibers are preferably positioned in a circle around the central fiber, thereby providing geometry that substantially avoids undesirable crosstalk between fibers in the array. In another implementation, the fiber array is implemented using a tapered ferrule housing a central fiber, surrounded by an intermediate layer of six fibers, surrounded by an outer layer of twelve fibers.