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:
Feb. 17, 2015
Filed:
Jul. 07, 2014
Western Digital (Fremont), Llc, Fremont, CA (US);
Jiangrong Cao, Fremont, CA (US);
Michael V. Morelli, San Jose, CA (US);
Brad V. Johnson, Santa Clara, CA (US);
Matthew R. Gibbons, San Jose, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
An apparatus for energy assisted magnetic recording of a storage disk includes a plurality of dielectric waveguide cores configured to receive incident light energy from an energy source and direct the incident light energy to a target, and a near field transducer (NFT) formed at an air bearing surface of a magnetic recording device. The NFT is configured to focus the light energy received from the plurality of waveguide cores and to transmit the focused light energy onto the storage disk surface to generate a heating spot on the storage disk. The NFT includes a plurality of propagating surface plasmon polariton (PSPP) elements configured as plasmonic metal ridges. Each of the PSPP elements has a width approximately equivalent to the width of the heating spot and is disposed above a surface of a single waveguide core in a longitudinal alignment.