Patent ID: 9064527
Filing Date: 2015-06-23
Classification: G02B,G11B

Abstract:
1. A heat assisted magnetic recording (HAMR) transducer coupled with a laser for providing energy and having an air-bearing surface (ABS) configured to reside in proximity to a media during use, the HAMR transducer comprising: a write pole configured to write to a region of the media; at least one coil for energizing the write pole; a tapered waveguide optically coupled with the laser, the tapered waveguide including an entrance distal from the ABS, a bottom proximate to the ABS, a first side and a second side opposite to the first side, at least a portion of the first side and at least a portion of the second side converging in accordance with a function having at least one term having an order that is at least three; wherein the waveguide is an interferometric tapered waveguide including a plurality of arms.