title: Experimental observation of slow mode dispersion in photonic crystal coupled-cavity waveguides.
abstract: We experimentally investigate the dispersion curve of an integrated silicon-on-insulator coupled-cavity waveguide in a photonic crystal environment using a technique based on far-field imaging. We show that a chain of eight coupled cavities of a moderate Q factor can form a continuous dispersion band characterized by extremely flat dispersion and a group index of 105+/-20 within a 2.6 nm wavelength range. The experimental results are well reproduced by theoretical calculations based on the guided-mode expansion method.
authors.affiliation: Institut de Photonique et dElectronique Quantiques, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland. jana.jagerska@epfl.ch
authors.forename: Jana
authors.initials: J
authors.lastname: Jágerská
authors.forename: Nicolas
authors.initials: N
authors.lastname: Le Thomas
authors.forename: Vasily
authors.initials: V
authors.lastname: Zabelin
authors.forename: Romuald
authors.initials: R
authors.lastname: Houdré
authors.forename: Wim
authors.initials: W
authors.lastname: Bogaerts
authors.forename: Pieter
authors.initials: P
authors.lastname: Dumon
authors.forename: Roel
authors.initials: R
authors.lastname: Baets