title: Optical characterization of a SCISSOR device.
abstract: Here, we report on the design, fabrication and characterization of single-channel (SC-) and dual-channel (DC-) side-coupled integrated spaced sequences of optical resonators (SCISSOR) with a finite number (eight) of microring resonators using submicron silicon photonic wires on a silicon-on-insulator (SOI) wafer. We present results on the observation of multiple resonances in the through and the drop port signals of DC-SCISSOR. These result from the coupled resonator induced transparency (CRIT) which appears when the resonator band (RB) and the Bragg band (BB) are nearly coincident. We also observe the formation of high-Q (> 23000) quasi-localized modes in the RB of the drop transmission which appear when the RB and BB are well separated from each other. These multiple resonances and quasi-localized modes are induced by nanometer-scale structural disorders in the dimension of one or more rings. Finally, we demonstrate the tunability of RB (and BB) and localized modes in the DC-SCISSOR by thermo-optical or free-carrier refraction.
authors: Nanoscience Laboratory, Department of Physics, University of Trento, Povo (Trento), Italy.
authors: Mattia
authors: M
authors: Mancinelli
authors: Romain
authors: R
authors: Guider
authors: Marco
authors: M
authors: Masi
authors: Paolo
authors: P
authors: Bettotti
authors: Manga Rao
authors: MR
authors: Vanacharla
authors: Jean-Marc
authors: JM
authors: Fedeli
authors: Lorenzo
authors: L
authors: Pavesi
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D055096:Optical Devices; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*; D014732:Vibration