A study of poly-silicon and Ta2O5 photonic crystal waveguides for HAMR light delivery system

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Publication Details

Author list: Watcharakitchakorn O., Silapunt R., Charlton M.

Publication year: 2016

Volume number: 2016-January

ISBN: 9781479986415

ISSN: 2159-3442

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962163365&doi=10.1109%2fTENCON.2015.7372817&partnerID=40&md5=87729f9dd65a72e6eb4ba94275ec757a

Languages: English-Great Britain (EN-GB)

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Abstract

This paper proposes the study of photonic crystal (PhC) waveguide materials for Heat Assisted Magnetic Recording (HAMR) light delivery system. Materials of interest are poly-silicon (poly-Si) and tantalum pentoxide (Ta2O5). The PhC waveguides are designed based on poly-silicon structure at 1,550 nm wavelength. Light transmission into the poly-silicon structure is extremely limited. The unsuccessful transmission is probably caused by the poly-silicon itself as well as the fabrication process. Ta2O5 is more promising material for the HAMR light delivery since Ta2O5 is transparent in both visible and infrared ranges. Light can be guided successfully into Ta2O5 feed guide and coupler. However, light is barely coupled into the Ta2O5 PhC waveguide probably because the 1,550 nm light is out of its transmission designed range at 900-1,300 nm. The structure will then be redesigned and fabricated to enable the transmission at this wavelength range. ฉ 2015 IEEE.

Keywords

Photonic Crystal Waveguide, Tantalum Pentoxide