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Title: Configurable silicon photonic crystal waveguides

In this Letter, we demonstrate that the mode cut off of a photonic crystal waveguide can be trimmed with high accuracy by electron beam bleaching of a chromophore doped polymer cladding. Using this method, configurable waveguides are realized, which allow for spatially resolved changes of the photonic crystal's effective lattice constant as small as 7.6 pm. We show three different examples how to take advantage of configurable photonic crystal waveguides: Shifting of the complete transmission spectrum, definition of cavities with high quality factor, and tuning of existing cavities.
Authors:
; ;  [1] ; ;  [2]
  1. Institute for Optical and Electronic Materials (E-12), Hamburg University of Technology (TUHH), Eissendorfer Str. 38, 21073 Hamburg (Germany)
  2. Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98194-212 (United States)
Publication Date:
OSTI Identifier:
22217707
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 26; Other Information: (c) 2013 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; 36 MATERIALS SCIENCE; ACCURACY; BLEACHING; CLADDING; CRYSTALS; DOPED MATERIALS; ELECTRON BEAMS; FABRICATION; LATTICE PARAMETERS; POLYMERS; QUALITY FACTOR; SILICON; SPECTRA; TRANSMISSION; WAVEGUIDES