Near-infrared characterization of gallium nitride photonic-crystal waveguides and cavities

We report the design and optical characterization of fully suspended wire waveguides and photonic crystal (PhC) membranes fabricated on a gallium nitride layer grown on silicon substrate operating at 1.5 μm. W1-type PhC waveguides are coupled with suspended wires and are investigated using a standar...

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Bibliographic Details
Published inOptics letters Vol. 37; no. 22; p. 4588
Main Authors Dharanipathy, U, Vico Triviño, N, Yan, C, Diao, Z, Carlin, J-F, Grandjean, N, Houdré, R
Format Journal Article
LanguageEnglish
Published United States 15.11.2012
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Summary:We report the design and optical characterization of fully suspended wire waveguides and photonic crystal (PhC) membranes fabricated on a gallium nitride layer grown on silicon substrate operating at 1.5 μm. W1-type PhC waveguides are coupled with suspended wires and are investigated using a standard end-fire setup. The experimental and theoretical dispersion properties of the propagating modes in the wires and photonic-crystal waveguides are shown. Modified L3 cavities with quality factors of up to 2200 and heterostructure cavities with quality factors of up to 5400 are experimentally demonstrated.
ISSN:1539-4794
DOI:10.1364/ol.37.004588