Investigations of birefringence of the fundamental and the higher order modes in index guiding photonic crystal fiber

Tadeusz Martynkien; Jacek Olszewski; Marcin Szpulak; Grzegorz Golojuch; Gabriela Statkiewicz; Waclaw Urbanczyk; Jan Wojcik; Pawel Mergo; Mariusz Makara; Tomasz Nasilowski; Francis Berghmans; Hugo Thienpont

doi:10.1117/12.722944

17 May 2007 Investigations of birefringence of the fundamental and the higher order modes in index guiding photonic crystal fiber

Tadeusz Martynkien, Jacek Olszewski, Marcin Szpulak, Grzegorz Golojuch, Gabriela Statkiewicz, Waclaw Urbanczyk, Jan Wojcik, Pawel Mergo, Mariusz Makara, Tomasz Nasilowski, Francis Berghmans, Hugo Thienpont

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Proceedings Volume 6588, Photonic Crystal Fibers; 658810 (2007) https://doi.org/10.1117/12.722944
Event: International Congress on Optics and Optoelectronics, 2007, Prague, Czech Republic

Abstract

We investigated theoretically and experimentally the wavelength dependences of phase and group modal birefringence for the fundamental (E₁₁) and the higher order mode (E₃₁) supported by index guiding highly birefringent photonic crystal fiber. The birefringence in the investigated structure was induced by asymmetrical cladding consisting of one row of cladding holes with a diameter lower than the other cladding holes. The numerical simulations carried out with use of the full-vector finite elements method show that the birefringence of the E₃₁ mode can be about 30% higher than of the fundamental mode. Additionally, we measured the modal birefringence of the both modes using scanning wavelength method. A comparatively good agreement between the calculation and experimental results was obtained confirming the validity of the theoretical analysis.

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Tadeusz Martynkien, Jacek Olszewski, Marcin Szpulak, Grzegorz Golojuch, Gabriela Statkiewicz, Waclaw Urbanczyk, Jan Wojcik, Pawel Mergo, Mariusz Makara, Tomasz Nasilowski, Francis Berghmans, and Hugo Thienpont "Investigations of birefringence of the fundamental and the higher order modes in index guiding photonic crystal fiber", Proc. SPIE 6588, Photonic Crystal Fibers, 658810 (17 May 2007); https://doi.org/10.1117/12.722944

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