Title :
Variable oblique incidence for tunability in a two-dimensional photonic-crystal guided-wave filter
Author :
Ciminelli, Caterina ; Peluso, Francesco ; Armenise, Mario N. ; De La Rue, Richard M.
Author_Institution :
Dipt. di Elettrotecnica ed Elettronica, Bari Univ., Italy
Abstract :
In this paper, the tuning mechanism for a two-dimensional (2-D) guided-wave photonic-crystal (PhC) filter obtained by varying the angle-of-incidence in the waveguide plane is demonstrated. Modeling and design of the filter have been carried out by using the Bloch-Floquet formalism. The device shows a resonance wavelength at 1550 nm for the p=30 order at normal incidence. The free spectral range (FSR) is about 38 nm and can be spanned with an in-plane angle of incidence θ ranging from 0° to 14°. The full width at half maximum (FWHM) is in the range 0.14-0.18 nm. The filter performance is suitable for 50-GHz dense-wavelength-division-multiplexing (DWDM) systems and shows that variable oblique incidence can be exploited as a tuning mechanism.
Keywords :
optical communication equipment; optical design techniques; optical tuning; optical waveguide filters; photonic crystals; wavelength division multiplexing; 1550 nm; 50 GHz; Bloch-Floquet formalism; DWDM; dense-wavelength-division-multiplexing; free spectral range; guided-wave filter design; resonance wavelength; tunability; two-dimensional photonic-crystal; variable oblique incidence; Electromagnetic waveguides; Optical filters; Optical propagation; Optical waveguides; Periodic structures; Photonic crystals; Planar waveguides; Resonator filters; Semiconductor waveguides; Transmission line matrix methods; Fabry–PÉrot resonators; integrated optics; modeling; optical waveguide filters; periodic structures; photonic crystals (PhCs); photonic-band-gap (PBG) waveguide; semiconductor waveguides; tunable filters;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.859860
