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:
May. 12, 1998
Filed:
Jan. 03, 1997
Sergej G Krivoshlykov, Palmer, MA (US);
Bolesh J Skutnik, New Britain, CT (US);
Ceram Optec Industries, Inc., East Longmeadow, MA (US);
Abstract
A method for efficiently coupling beams from semiconductor lasers into optical fibers is presented which provides optical fibers with a modified end surface for efficient coupling. The method comprises a combination of shaping of the fiber end face and of axially varying the refractive index of the fiber end face material as a function of the distance from fiber end face surface. One preferred embodiment employs an axial gradient-index lens (AGRIN lens) fabricated directly on the fiber end face to improve coupling a laser beam into the fiber. The method can also be used in other applications where optical fibers having spherical or more complicated surfaces of their end faces need to be fabricated.