FEM investigation of leaky modes in hollow core photonic crystal fibers

Jan Pomplun; Ronald Holzlöhner; Sven Burger; Lin Zschiedrich; Frank Schmidt

doi:10.1117/12.700495

5 February 2007 FEM investigation of leaky modes in hollow core photonic crystal fibers

Jan Pomplun, Ronald Holzlöhner, Sven Burger, Lin Zschiedrich, Frank Schmidt

Proceedings Volume 6480, Photonic Crystal Materials and Devices VI; 64800M (2007) https://doi.org/10.1117/12.700495
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

Hollow-core holey fibers are promising candidates for low-loss guidance of light in various applications, e.g., for the use in laser guide star adaptive optics systems in optical astronomy. We present an accurate and fast method for the computation of light modes in arbitrarily shaped waveguides. Maxwell's equations are discretized using vectorial finite elements (FEM). We discuss how we utilize concepts like adaptive grid refinement, higher-order finite elements, and transparent boundary conditions for the computation of leaky modes in photonic crystal fibers. Further, we investigate the convergence behavior of our methods. We employ our FEM solver to design hollow-core photonic crystal fibers (HCPCF) whose cores are formed from 19 omitted cladding unit cells. We optimize the fiber geometry for minimal attenuation using multidimensional optimization taking into account radiation loss (leaky modes).

Citation Download Citation

Jan Pomplun, Ronald Holzlöhner, Sven Burger, Lin Zschiedrich, and Frank Schmidt "FEM investigation of leaky modes in hollow core photonic crystal fibers", Proc. SPIE 6480, Photonic Crystal Materials and Devices VI, 64800M (5 February 2007); https://doi.org/10.1117/12.700495

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