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.
Avoided-crossing-based liquid-crystal photonic-bandgap notch filter / D. Noordegraaf; L. Scolari; J. Lægsgaard; T. T. Alkeskjold; G. Tartarini; E. Borelli; P. Bassi; J. Li; and S. Wu. - In: OPTICS LETTERS. - ISSN 0146-9592. - ELETTRONICO. - 33:(2008), pp. 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.
