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Mode couplings of a semiconductor nanowire scanning across a photonic crystal nanocavity

  • Qingchen Yuan
  • , Liang Fang
  • , Qiang Zhao
  • , Yadong Wang
  • , Bo Mao
  • , Vladislav Khayrudinov
  • , Harri Lipsanen
  • , Zhipei Sun
  • , Jianlin Zhao
  • , Xuetao Gan
  • Northwestern Polytechnical University Xian
  • China Aerospace Science and Technology Corporation
  • Aalto University

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The position-dependent mode couplings between a semiconductor nanowire (NW) and a planar photonic crystal (PPC) nanocavity are studied. By scanning anNWacross a PPC nanocavity along the hexagonal lattice's Γ -M and M - K directions, the variations of resonant wavelengths, quality factors, and mode volumes in both fundamental and second-order resonant modes are calculated, implying optimal configurations for strong mode-NW couplings and light-NW interactions. For the fundamental (second-order) resonant mode, scanning anNWalong theM- K (Γ - M) direction is preferred, which supports stronger light-NW interactions with larger NW-position tolerances and higher quality factors simultaneously. The simulation results are confirmed experimentally with good agreements.

Original languageEnglish
Article number062301
JournalChinese Optics Letters
Volume17
Issue number6
DOIs
StatePublished - 10 Jun 2019

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