Patent ID: 8248898
Filing Date: 2012-08-21
Classification: G11B

Abstract:
1. A thermally assisted magnetic recording (TAMR) head comprising: (a) a light source that generates light and transmits said light into a main waveguide and towards an air bearing surface (ABS); (b) the main waveguide for transmitting light to a nearfield device at the ABS, said main waveguide has a lengthwise dimension in a direction perpendicular to the ABS with an end at the ABS, an opposite end facing said light source, and comprising: (c) an alignment waveguide (AWVG) structure including a first AWVG and a second AWVG each formed along a side of the main waveguide, said first and second AWVG are symmetrically formed about a plane that bisects the main waveguide in the lengthwise direction and each AWVG comprises: