Realizing high transmission intensity in photonic crystal nanobeams using a side-coupling waveguide

Optics Letters
Sami I HalimiSharon M Weiss

Abstract

Side-coupled photonic crystal (PhC) nanobeam cavities were investigated to overcome challenges in measuring low-order resonances in traditional in-line PhC nanobeams that arise due to the trade-off between achieving high quality (Q)-factor and high transmission intensity resonances. On the same PhC nanobeam, we demonstrate that the side-coupling approach leads to measurable resonances even in cases in which high mirror strength unit cells severely limit the intensity of transmitted light through the in-line configuration. In addition, by coupling light directly into the cavity center, the design of side-coupled PhC nanobeams can be simplified such that high Q-factor PhC nanobeams can be achieved using only two different hole radii and uniform hole spacing.

References

Oct 31, 2003·Nature·Yoshihiro AkahaneSusumu Noda
Apr 10, 2004·Optics Letters·Paul E BarclayOskar Painter
Jul 28, 2013·Scientific Reports·C RenautF de Fornel
Oct 26, 2013·Nano Letters·B J M HausmannM Lonc R
Feb 12, 2014·Optics Express·Feng LiangQimin Quan
Jun 18, 2017·Physical Review Letters·Hyeongrak ChoiDirk Englund

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Citations

Jun 6, 2019·Optics Express·Francis O AfzalSharon M Weiss

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