Title :
Planar photonic crystal coupled cavity waveguides
Author :
Karle, Tim J. ; Brown, Donald H. ; Wilson, Rab ; Steer, Matthew ; Krauss, Thomas F.
Author_Institution :
Sch. of Phys. & Astron., Univ. of St. Andrews, UK
Abstract :
We present absolute transmission measurements of coupled cavity waveguides defined within planar photonic crystals. We investigate a range of cavity types and also vary the spacing between cavities. Modal analysis of the individual cavities reveals the symmetries that determine the coupling between adjacent cavities. Enhanced transmission is demonstrated by modifying the photonic crystal lattice. We highlight the need for correct impedance matching at the waveguide input in order to improve the transmission.
Keywords :
coupled mode analysis; finite difference time-domain analysis; impedance matching; microwave photonics; optical planar waveguides; photonic band gap; absolute power spectral measurements; absolute transmission measurements; coupled cavity waveguides; evanescent-mode tails overlapping; finite difference time domain; impedance matching; integrated optics; localized field; modal analysis; planar photonic crystals; reactive ion etching; vertical effective index; waveguide input; Couplings; Dielectrics; Integrated optics; Lattices; Optical control; Optical waveguides; Photonic band gap; Photonic crystals; Planar waveguides; Semiconductor waveguides;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2002.801741
