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:
Aug. 17, 1999
Filed:
Jul. 16, 1997
Andrew Thomas Harker, Suffolk, GB;
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
Embodiments of the present invention provide optical fibre microlenses having anamorphic focusing means which have a major axis which is not perpendicular to the longitudinal axis of the optical fibre. In particular, a wedge-shaped optical fibre microlens whose tip is skewed with respect to the longitudinal axis of the optical fibre, is described. Such optical fibre microlenses find particular application in coupling light from semiconductor lasers having asymmetrical output radiation patterns, since they increase the coupling efficiency and reduce the level of back reflection from the microlens to the laser. This is of particular importance for semiconductor lasers used to pump optical fibre amplifiers.