Grating coupler design of an integrated HAMR head light delivery system using topology optimization

Hyun Jun Soh, Jeonghoon Yoo

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Article number5467641
Pages (from-to)1511-1514
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number6
Publication statusPublished - 2010 Jun

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government (MEST) (No. 2009-0079338).

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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