Grating Coupler Design of an Integrated HAMR Head Light Delivery System Using Topology Optimization

Author

Soh, Hyun-Jun ; Yoo, Jeonghoon

Author_Institution

Grad. Sch. of Mech. Eng., Yonsei Univ., Seoul, South Korea

Volume

46

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1511

Lastpage

1514

Abstract

This research is objected to design the grating structure for the purpose of efficient light delivery for the heat assisted magnetic recording (HAMR) system. The parameter study is firstly performed to determine the proper size of waveguide components and the topology optimization method is employed to design the grating structure. The formulation of the optimization problem is set to maximize the efficiency of the optical delivery. In the topology optimization result, the coupling efficiency is improved more than 20 times in comparison with the initial coupling efficiency and it is verified that the suggested optimization process can be applied to the grating structure design in the HAMR head effectively.

Keywords

diffraction gratings; integrated optics; magnetic recording; network topology; grating coupler design; grating structure; head light delivery system; heat assisted magnetic recording; integrated HAMR; topology optimization method; waveguide components; Design optimization; Gratings; Heat-assisted magnetic recording; Magnetic heads; Magnetic recording; Optical coupling; Optical waveguide components; Optical waveguides; Optimization methods; Topology; Grating coupler; heat assisted magnetic recording; topology optimization; waveguide design;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2039855

Filename

5467641