Plasmonic near field transducer of nanocomposite with distributed feedback

In this paper, we present a novel near field transducer (NFT) design concept for heat assisted recording. design, metal bars separated by thin dielectric are used to form resonance plasmonic grating with distributed feedback (DFB). The motivation such structure is the use of separation enhancing material stability at elevated temperature so that best materials can be without compromising much needed properties. COMSOL Multiphysics software simulate excitation and propagate provide detailed performance analysis on NFT nanocomposite create optical (DFB) maintaining resonance. composed an array Au rectangular gratings constant gap, each component embedded in medium. It shown based could have same efficiency compared solid piece geometric dimensions.