Title :
When and how coupled-mode theory fails in high-index contrast arrayed and multi-slot waveguides
Author :
Cooper, Michael L. ; Mookherjea, Shayan
Author_Institution :
Univ. of California, La Jolla, CA, USA
Abstract :
We describe a method of reconstruction for investigating the validity of coupled mode theory in deriving the coupling coefficients of high index contrast (silicon-on-insulator) arrayed waveguides. For three material systems (silicon and air, oxide, and nitride) we quantify at which separation distances the next-to-nearest-neighbor coupling becomes significant, and the precise way in which coupled-mode theory breaks down, by reconstructing a coupling matrix from the fields and propagation constants.
Keywords :
coupled mode analysis; matrix algebra; optical arrays; optical materials; optical waveguides; refractive index; silicon-on-insulator; Si-SiO2; coupled-mode theory; coupling matrix; high-refractive index contrast arrayed waveguide; multislot waveguide; propagation constants; silicon-on-insulator arrayed waveguide; Coupling circuits; Eigenvalues and eigenfunctions; Integrated optics; Optical coupling; Optical waveguide theory; Optical waveguides; Propagation constant; Silicon on insulator technology; Transmission line matrix methods; Waveguide theory; (130.2790) Guided waves; (130.3120) Integrated optics devices; (230.7380) Waveguides, channeled;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
