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

Research output: Contribution to journalArticleScientificpeer-review

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
Pages (from-to)62301
Number of pages6
JournalCHINESE OPTICS LETTERS
Volume17
Issue number6
DOIs
Publication statusPublished - 10 Jun 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • NANOWIRES

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