90° bent metallic waveguide with a tapered C-shaped aperture for use in HAMR

J. Brian Leen; Eunhyoung Cho; Sung-Dong Suh; Paul C. Hansen; Jin-Seung Sohn; Sung-Hoon Choa; Lambertus Hesselink

doi:10.1117/12.738908

11 July 2007 90° bent metallic waveguide with a tapered C-shaped aperture for use in HAMR

J. Brian Leen, Eunhyoung Cho, Sung-Dong Suh, Paul C. Hansen, Jin-Seung Sohn, Sung-Hoon Choa, Lambertus Hesselink

Proceedings Volume 6620, Optical Data Storage 2007; 66200R (2007) https://doi.org/10.1117/12.738908
Event: Optical Data Storage 2007, 2007, Portland, OR, United States

Abstract

An efficient and compact method of introducing light into a magnetic recording head for use in Heat Assisted Magnetic Recording (HAMR) is proposed. The technique uses a polymer waveguide to source light into a novel metallic structure consisting of a sub-wavelength C-aperture waveguide with a 90° bend and a tapered section. The structure is modeled using Finite Difference Time Domain (FDTD) simulations and it is shown that the 90° bend allows for low loss near-field optical access into a conventional magnetic recording head while the tapered C-waveguide allows for maximum input coupling and a minimum spot size at the recording media.

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J. Brian Leen, Eunhyoung Cho, Sung-Dong Suh, Paul C. Hansen, Jin-Seung Sohn, Sung-Hoon Choa, and Lambertus Hesselink "90° bent metallic waveguide with a tapered C-shaped aperture for use in HAMR", Proc. SPIE 6620, Optical Data Storage 2007, 66200R (11 July 2007); https://doi.org/10.1117/12.738908

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