アクセス数 : ?
ダウンロード数 : ?
ID 113814
著者
キーワード
Subwavelength grating
Waveguide
Dual-wavelength filter
Guided mode
資料タイプ
学術雑誌論文
抄録
A dual-wavelength filter was experimentally demonstrated using subwavelength grating (SWG)/waveguide structure. We designed the structural parameters of the SWG and the waveguide to find the reflection peaks in the visible wavelength region. To investigate the optical response of the designed SWG/waveguide structure, finite-difference time-domain (FDTD) numerical calculations were performed for electromagnetic field distribution. The dual reflection peaks from our proposed structure were predicted in visible wavelength regions by the FDTD calculation. The calculated electromagnetic field distribution also revealed that the reflection peaks were associated with resonances in the SWG and waveguides. We fabricated the SWG/waveguide with typical electron-beam lithography techniques, and two reflection peaks were observed at wavelengths of 486 nm and 590 nm with bandwidths of 45 nm and 58 nm, respectively. These experimental results indicate that dual-wavelength filters can be successfully realized without complex fabrication processes.
掲載誌名
Optical Review
ISSN
13499432
出版者
Springer Japan|The Optical Society of Japan
26
5
開始ページ
466
終了ページ
471
発行日
2019-08-28
備考
This is a post-peer-review, pre-copyedit version of an article published in Optical Review. The final authenticated version is available online at: https://doi.org/10.1007/s10043-019-00541-3.
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
著者版
部局
理工学系