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Review of Scientific Instruments / Volume 79 / Issue 10 / MICROSCOPY AND IMAGING

Rev. Sci. Instrum. 79, 103707 (2008); http://dx.doi.org/10.1063/1.3002427 (5 pages)

Fabrication of optical tips from photonic crystal fibers

Christine A. Carlson and Jörg C. Woehl

Department of Chemistry and Biochemistry, Laboratory for Surface Studies, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211, USA

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(Received 12 June 2008; accepted 29 September 2008; published online 27 October 2008)

We present a procedure for fabricating optical tips from photonic crystal fibers which feature a solid core surrounded by a cladding with a hexagonal, multilayer arrangement of air channels running along the length of the fiber. Such optical tips may have unique advantages for the production of near-field optical aperture probes (i.e., metal-coated optical tips with a subwavelength aperture at the tip apex). With both cladding and core made of pure silica, these fibers are fluorescence-free; they support only a single mode over a broad wavelength range (covering the visible and near-infrared spectrum), which makes them useful for multicolor experiments; and they exhibit zero group velocity dispersion at visible wavelengths, which opens up the possibility of femtosecond applications in the near field. Our tip fabrication procedure leads to a sharp, protruding, central tip formed exclusively from the fiber core amidst a regular arrangement of smaller tips from the inner, microstructured region of the cladding. A mechanism for tip formation is proposed based on optical observations at various stages, which explains the self-centering nature of the process.

© 2008 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. CONVENTIONAL FABRICATION METHODS
  3. EXPERIMENTAL PROTOCOL FOR PCF TIP FABRICATION
  4. RESULTS AND DISCUSSION

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KEYWORDS and PACS

Keywords

high-speed optical techniques, optical fibre cladding, photonic crystals

PACS

  • 42.81.Bm

    Fabrication, cladding, and splicing

  • 42.70.Qs

    Photonic bandgap materials

  • 42.65.Re

    Ultrafast processes; optical pulse generation and pulse compression

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3002427

PUBLICATION DATA

ISSN

0034-6748 (print)  
1089-7623 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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