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. 31, 2002
Filed:
Jun. 30, 2000
Steven Eugene Golowich, New Providence, NJ (US);
William Alfred Reed, Summit, NJ (US);
Lucent Technologies Inc., Murray Hill, NY (US);
Abstract
Disclosed is a method of launching a light beam from a semiconductor laser into a multimode optical fiber, as well as apparatus for launching the light beam. The light beam is directed at nominally the center of the input face of the multimode fiber such that the (unguided) light beam makes an angle &thgr; (typically in the range 1-20 degrees) with the direction perpendicular to the input face of the multimode fiber. The angle &thgr; is selected such that at least one lower order mode of the guided radiation in the multimode fiber is substantially not excited in the fiber, with at least some higher order modes being substantially excited. Several specific embodiments are disclosed.