We demonstrate a highly tunable deep notch filter realized in a liquid-crystal photonic-bandgap (LCPBG) fiber. The filter is realized without inducing a long-period grating in the fiber but simply by filling a solidcore photonic-crystal fiber with a liquid crystal and exploiting avoided crossings within the bandgap of the LCPBG fiber. The filter is demonstrated experimentally and investigated using numerical simulations. A high degree of tuning of the spectral position of the deep notch is also demonstrated.
D. Noordegraaf, L. Scolari, J. Lægsgaard, T. T. Alkeskjold, G. Tartarini, E. Borelli, et al. (2008). Avoided-crossing-based liquid-crystal photonic-bandgap notch filter. OPTICS LETTERS, 33, 986-988 [10.1364/OL.33.000986].
Avoided-crossing-based liquid-crystal photonic-bandgap notch filter
TARTARINI, GIOVANNI;BORELLI, ELENA;BASSI, PAOLO;
2008
Abstract
We demonstrate a highly tunable deep notch filter realized in a liquid-crystal photonic-bandgap (LCPBG) fiber. The filter is realized without inducing a long-period grating in the fiber but simply by filling a solidcore photonic-crystal fiber with a liquid crystal and exploiting avoided crossings within the bandgap of the LCPBG fiber. The filter is demonstrated experimentally and investigated using numerical simulations. A high degree of tuning of the spectral position of the deep notch is also demonstrated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
