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Probing the dispersive and spatial properties of photonic crystal waveguides via highly efficient coupling from fiber tapers

Appl. Phys. Lett. 85, 4 (2004); doi:10.1063/1.1767954

Issue Date: 5 July 2004

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P. E. Barclay, K. Srinivasan, M. Borselli, and O. Painter
Department of Applied Physics, California Institute of Technology, Pasadena, California 91125
The demonstration of an optical fiber based probe for efficiently exciting the waveguide modes of high-index contrast planar photonic crystal (PC) slabs is presented. Fiber taper waveguides formed from standard silica single-mode optical fibers are used to evanescently couple light into the guided modes of a patterned silicon membrane. A coupling efficiency of ~95% is obtained between the fiber taper and a PC waveguide mode suitably designed for integration with a previously studied ultrasmall mode volume high-Q  PC resonant cavity [Srinivasan et al., Appl. Phys. Lett. 83, 1915 (2003)]. The micron-scale lateral extent and dispersion of the fiber taper is used as a near-field spatial and spectral probe to study the profile and dispersion of PC waveguide modes. ©2004 American Institute of Physics
History: Received 28 October 2003; accepted 10 May 2004
Permalink: http://link.aip.org/link/?APPLAB/85/4/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.79.Gn
    Optical waveguides and couplers
  • 42.81.Qb
    Fiber waveguides, couplers, and arrays
  • 42.70.Qs
    Photonic bandgap materials
  • YEAR: 2004

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (13)
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