Electro-optic guided-mode resonance tuning suppressible by optically induced screening in a vertically coupled hybrid GaN/Si microring resonator

B. Thubthimthong, T. Sasaki, K. Hane

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

GaN as a nanophotonic material has gained much attention in recent years. Using the hybrid GaN/Si platform, we report the electro-optic tuning of guided-mode resonance in a vertically coupled hybrid GaN/Si microring resonator operating in the 1.5 μm window with up to a 6 dB extinction ratio and a 1.5 MHz modulation frequency (test equipment limit). The electro-optic tuning could be optically suppressed by electron-hole-originated screening induced by an ultraviolet excitation at 325 nm. Our work may benefit in externally intervenable optical interconnects for uninterrupted secure photonic networks.

Original languageEnglish
Article number071102
JournalApplied Physics Letters
Volume112
Issue number7
DOIs
Publication statusPublished - 2018 Feb 12

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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