Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Investigation of an Arc-induced Long Period Fiber Grating Inscribed in a Photonic Crystal Fiber with Two Large Air Holes

  • Kim, Sun-Duck (Photonics Research Laboratory, Division of Intelligent System, Korea Institute of Science and Technology (KIST)) ;
  • Kim, Gil-Hwan (Photonics Research Laboratory, Division of Intelligent System, Korea Institute of Science and Technology (KIST)) ;
  • Hwang, Kyu-Jin (Photonics Research Laboratory, Division of Intelligent System, Korea Institute of Science and Technology (KIST)) ;
  • Lim, Sun-Do (Photonics Research Laboratory, Division of Intelligent System, Korea Institute of Science and Technology (KIST)) ;
  • Lee, Kwan-Il (Photonics Research Laboratory, Division of Intelligent System, Korea Institute of Science and Technology (KIST)) ;
  • Kim, Sang-Hyuck (Photonics Research Laboratory, Division of Intelligent System, Korea Institute of Science and Technology (KIST)) ;
  • Lee, Sang-Bae (Photonics Research Laboratory, Division of Intelligent System, Korea Institute of Science and Technology (KIST))
  • Received : 2009.09.30
  • Accepted : 2009.11.12
  • Published : 2009.12.25
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Abstract

A photonic crystal fiber with two large air holes outside the holey cladding region is fabricated to induce an effective long periodic grating (LPG) in the core by an electric arc discharge. We believe that the two large air holes lead to the asymmetric perturbation in the core under the electric arc discharge, thereby introducing the coupling to the first higher-order mode. The transmission characteristics of the PCF with the LPG for the external perturbation such as strain, curvature, and temperature are also investigated. It was found that the shift of resonance peak in the transmission spectrum depends on the bending direction. The curvature of 8.55 $m^{-1}$ results in the center wavelength shifts of 1.8, 4.3, and 11 nm for a vertical, diagonal, and horizontal direction of the curvature to the large air-hole alignment, respectively.

Keywords

References

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