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A multichannel acoustic antenna with a linear piezoelectric transducer array was developed to detect thermal acoustic radiation from a deep-lying sample zone heated by laser. A cw Nd:YAG laser (wavele...

Creating large bandwidth line defects by embedding dielectric waveguides into photonic crystal slabs

Appl. Phys. Lett. 81, 3915 (2002); doi:10.1063/1.1523637

Issue Date: 18 November 2002

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Wah Tung Lau and Shanhui Fan
Department of Electrical Engineering, Stanford University, Stanford, California 94305
We introduce a general designing procedure that allows us, for any given photonic crystal slab, to create an appropriate line defect structure that possesses single-mode bands with large bandwidth and low dispersion within the photonic band-gap region below the light line. This procedure involves designing a high index dielectric waveguide that is phase matched with the gap of the photonic crystal slab, and embedding the dielectric waveguide as a line defect into a crystal in a specific configuration that is free of edge states within the guiding bandwidth. As an example, we show a single mode line defect waveguide with a bandwidth approaching 13% of the center-band frequency, and with a linear dispersion relation throughout most of the bandwidth. ©2002 American Institute of Physics.
History: Received 10 July 2002; accepted 1 October 2002
Permalink: http://link.aip.org/link/?APPLAB/81/3915/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.82.Et
    Optics Integrated optics Waveguides, couplers, and arrays
  • 42.79.Gn
    Optics Optical elements, devices, and systems (for integrated optics, see 42.82; for fiber optics, see 42.81) Optical waveguides and couplers
  • 42.70.Qs
    Optics Optical materials Photonic bandgap materials
  • YEAR: 2002

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (14)
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