Laser Physics

, Volume 18, Issue 10, pp 1153–1158 | Cite as

Higher-order mode investigations by intermodal interference in a dual-core photonic crystal fiber

  • M. KoysEmail author
  • I. Bugar
  • D. Lorenc
  • R. Buczynski
  • D. Pysz
  • F. Uherek
Nonlinear and Quantum Optics


This article presents an investigation of the linear optical properties of a dual-core photonic crystal fiber with a square lattice made of a multicomponent glass in a second communication window. An experimental method based on intermodal interference was used to determine the effective refractive indices of higher-order modes, with knowledge of the fundamental mode dispersion. The effective refractive indices were also determined by an FDTD-based simulation and the obtained values provided a good agreement in comparison to the experimental results. The obtained results help to clarify the nonlinear spectral transformation processes observed in the same fiber at propagation in the higher-order modes.

PACS numbers

42.81.Cn 42.81.Gs 42.81.Qb 


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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • M. Koys
    • 1
    • 2
    Email author
  • I. Bugar
    • 2
  • D. Lorenc
    • 2
  • R. Buczynski
    • 3
  • D. Pysz
    • 4
  • F. Uherek
    • 2
  1. 1.Department of Experimental Physics, Faculty of Mathematics, Physics and InformaticsComenius UniversityMlynska Dolina, BratislavaSlovakia
  2. 2.International Laser CenterBratislavaSlovakia
  3. 3.Faculty of PhysicsWarsaw UniversityWarsawPoland
  4. 4.Institute of Electronic Materials TechnologyWarsawPoland

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