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:
Jan. 01, 2019
Filed:
Jan. 23, 2017
Seagate Technology Llc, Cupertino, CA (US);
Reyad Mehfuz, Derry, GB;
Aidan Dominic Goggin, Donegal, IE;
Kelly Elizabeth Hamilton, Derry, GB;
John Bernard McGurk, Derry, GB;
Seagate Technology LLC, Cupertino, CA (US);
Abstract
A write head comprises a waveguide core configured to receive light emitted in a crosstrack direction from a light source at a fundamental transverse electric (TE) mode. The waveguide core comprises a first turn that receives the light in the crosstrack direction redirects the light to an opposite crosstrack direction and a second turn that redirects the light to a direction normal to a media-facing surface of the write head. The waveguide core comprises a straight section that couples the first and second turns and a branched portion extending from the straight section. The branched portion is configured to convert the light to a higher-order (TE) mode. A near-field transducer at the media-facing surface is configured to receive the light at the TEmode from the waveguide and directs surface plasmons to a recording medium in response thereto.