Title :
Impact of bandwidth on field enhancements effects in finite-size dispersion-engineered metamaterials
Author :
Jung, Kyung-Young ; Ju, Saehoon ; Teixeira, Fernando L.
Author_Institution :
Ajou Univ., Suwon, South Korea
Abstract :
Photonic crystals (PhC) with a degenerate band edge (DBE) or a split band edge (SBE) yield dramatic field enhancement effects due to the interplay of slow-wave effects and Fabry-Perot resonances near the band-edge frequency. Numerical simulations are performed to investigate the impact of the fractional bandwidth (FBW) on field enhancement effects in both types of PhCs. The analysis is based on an unconditionally stable finite-difference time-domain (FDTD) method. We have found out that SBE PhCs can be less sensitive to the FBW than DBE PhCs when yielding similar performance.
Keywords :
finite difference time-domain analysis; metamaterials; optical dispersion; photonic crystals; Fabry-Perot resonances; degenerate band edge; field enhancement effects; finite-difference time-domain method; finite-size dispersion-engineered metamaterials; fractional bandwidth; photonic crystals; slow-wave effects; split band edge; Bandwidth; Dispersion; Fabry-Perot; Finite difference methods; Frequency; Metamaterials; Numerical simulation; Photonic crystals; Resonance; Time domain analysis;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325566
