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

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.
Authors:
;  [1] ;  [2]
  1. Microelectronics Research Center, Department of Electrical and Computer Engineering, University of Texas at Austin, 10100 Burnet Rd., Austin, Texas 78758 (United States)
  2. Omega Optics, Inc., 8500 Shoal Creek Blvd., Austin, Texas 78757 (United States)
Publication Date:
OSTI Identifier:
22489140
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRYSTALS; FUNCTIONS; LASERS; LATTICE PARAMETERS; QUALITY FACTOR; RESONANCE; SAPPHIRE; SILICON; WAVEGUIDES; WAVELENGTHS