Mid-infrared silicon-on-sapphire waveguide coupled photonic crystal microcavities

Journal Article · Mon Aug 24 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4929601· OSTI ID:22489140

Zou, Yi; Chakravarty, Swapnajit ^[1]

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1. Omega Optics, Inc., 8500 Shoal Creek Blvd., Austin, Texas 78757 (United States)

We experimentally demonstrate a photonic crystal (PC) microcavity side coupled to a W1.05 photonic crystal waveguide fabricated in silicon-on-sapphire working in mid-IR regime at 3.43 μm. Using a fixed wavelength laser source, propagation characteristics of PC waveguides without microcavity are characterized as a function of lattice constant to determine the light line position, stop gap, and guided mode transmission behavior. The resonance of an L21 PC microcavity coupled to the W1.05 PCW in the guided mode transmission region is then measured by thermal tuning of the cavity resonance across the source wavelength. Resonance quality factor ∼3500 is measured from the temperature dependency curve.

• OSTI ID: 22489140
• Journal Information: Applied Physics Letters, Vol. 107, Issue 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CRYSTALS
FUNCTIONS
LASERS
LATTICE PARAMETERS
QUALITY FACTOR
RESONANCE
SAPPHIRE
SILICON
WAVEGUIDES
WAVELENGTHS