Lee D, Jung Y, Jeong Y S, Oh K, Kobelke J, Schuster K, Kirchhof J
Department of Information and Communications, Gwangju Institute of Science and Technology, South Korea.
Opt Lett. 2006 Feb 1;31(3):296-8. doi: 10.1364/ol.31.000296.
A very flexible and versatile tunable mechanical grating platform is introduced, with which highly polarization-dependent mode coupling is observed for three types of air-silica microstructured fibers: hollow core fiber, hexagonal-boundary holey fiber (HHF), and circular-boundary holey fiber. The resonances of gratings showed highly polarization-dependent broadband coupling compared with conventional single-mode fibers due to their unique beat-length dispersions between the core and the cladding modes, which could find applications in wideband polarization-dependent loss compensation. We further present significance of the spatial symmetry of HHF in distinct mode coupling for different rotation angles around the fiber axis.
