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Proceedings Paper

Guided-mode resonance filter with variable bandwidth using coupling gratings near the Brewster angle
Author(s): Tian Sang; Junlang Li; Jianyu Zhou; Rui Wang; Yueke Wang; Jicheng Wang
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Paper Abstract

Guided-mode resonance filter (GMRF) with variable bandwidth using coupling gratings near the Brewster angle is presented. For the contact coupling gratings, the bandwidth of the GMRF can be significantly altered with the resonance location kept almost the same as the transverse shift is varied. The resonance location blue-shifts with the increase of the air gap thickness in both cases of S=0 and S=0.5. The filter bandwidth is increased exponentially with the increase of the air gap thickness at the aligned condition due to the decreased mode confinement. In the case of the maximum misaligned condition, the filter bandwidth is reduced exponentially with the increase of the air gap thickness due to the decreased mode coupling between the two misaligned gratings. The spectral response of the coupling gratings coincides with each other for both the aligned condition and the maximum misaligned condition when the thickness of the air gap is large enough. The resonance location almost does not move as it approaches the cutoff wavelength of the substrate. The sideband level is kept low as the transverse and horizontal shifts are varied due to the Brewster antireflection (AR) effect.

Paper Details

Date Published: 5 January 2017
PDF: 6 pages
Proc. SPIE 10244, International Conference on Optoelectronics and Microelectronics Technology and Application, 1024428 (5 January 2017); doi: 10.1117/12.2264680
Show Author Affiliations
Tian Sang, Jiangnan Univ. (China)
Junlang Li, Jiangnan Univ. (China)
Jianyu Zhou, Jiangnan Univ. (China)
Rui Wang, Jiangnan Univ. (China)
Yueke Wang, Jiangnan Univ. (China)
Jicheng Wang, Jiangnan Univ. (China)


Published in SPIE Proceedings Vol. 10244:
International Conference on Optoelectronics and Microelectronics Technology and Application
Shaohua Yu; Jose Capmany; Yi Luo; Yikai Su; Songlin Zhuang; Yue Hao; Akihiko Yoshikawa; Chongjin Xie; Yoshiaki Nakano, Editor(s)

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