Recirculation-enhanced switching in photonic crystal Mach-Zehnder interferometers
- 28 June 2004
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 12 (13) , 3035-3045
- https://doi.org/10.1364/opex.12.003035
Abstract
We show that Mach-Zehnder interferometers (MZIs) formed from waveguides in a perfectly reflecting cladding can display manifestly different transmission characteristics to conventional MZIs due to mode recirculation and resonant reflection. Understanding and exploiting this behavior, rather than avoiding it, may lead to improved performance of photonic crystal (PC) based MZIs, for which cladding radiation is forbidden for frequencies within a photonic bandgap. Mode recirculation in such devices can result in a significantly sharper switching response than in conventional interferometers. A simple and accurate analytic model is presented and we propose specific PC structures with both high and low refractive index backgrounds that display these properties.Keywords
This publication has 11 references indexed in Scilit:
- 1.5-μ m -wavelength light guiding in waveguides in square-lattice-of-rod photonic crystal slabApplied Physics Letters, 2004
- 2D Photonic crystal thermo-optic switch based on AlGaAs/GaAs epitaxial structureOptics Express, 2004
- Photonic crystal devices modelled as grating stacks: matrix generalizations of thin film opticsOptics Express, 2004
- Ultracompact resonant filters in photonic crystalsOptics Letters, 2003
- Design, fabrication, and characterization of coupling-strength-controlled directional coupler based on two-dimensional photonic-crystal slab waveguidesApplied Physics Letters, 2003
- Efficient photonic crystal Y-junctionsJournal of Optics A: Pure and Applied Optics, 2003
- Diffractionless Flow of Light in All-Optical MicrochipsPhysical Review Letters, 2003
- Mach–Zehnder interferometer employing coupled-resonator optical waveguidesOptics Letters, 2003
- 10 Gbit/s, 1.56 μm multiquantum well InP/InGaAsP Mach–Zehnder optical modulatorElectronics Letters, 1993
- Silicon Mach-Zehnder waveguide interferometers operating at 1.3 μmElectronics Letters, 1991