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Micro-racetrack coupled-resonator optical waveguides in silicon photonic wires

Micro-racetrack coupled-resonator optical waveguides in silicon photonic wires
Micro-racetrack coupled-resonator optical waveguides in silicon photonic wires
Coupled-resonator optical waveguide (CROW) structures including coupled micro-racetrack resonators realized using silicon photonic wires are theoretically investigated in this paper. An accurate modelling procedure has been developed. It takes into account the differences in optical coupling between two identical resonators and between a straight waveguide (bus waveguide) and a resonator. The modelling approach is based on a mixed, very general procedure, based on the transfer matrix approach for CROW investigation, coupled mode theory in a generalized form for characterization of coupling between adjacent resonators and between bus waveguides and resonators and the full-vectorial finite element method for performing coupling coefficient calculation and waveguides modal analysis. This technique can be adopted to model a wide spectrum of different CROW structures. As an explicative example, CROW structures including three coupled micro-racetrack resonators have been investigated. A large quality factor (~7 x 105) has been predicted for a proposed CROW structure when the quasi-TE mode is excited. The influence of fabrication tolerances on CROW structures has been also investigated.
1741-3567
1-11
Dell'Olio, Francesco
f1333d77-096d-49b3-a6d9-eb07727288a0
Passaro, Vittorio M.N.
787696b6-5fbe-4ec7-9a7f-b76b132ac819
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
De Leonardis, Francesco
bf765a9b-1083-4579-975c-ef2893b739cb
Dell'Olio, Francesco
f1333d77-096d-49b3-a6d9-eb07727288a0
Passaro, Vittorio M.N.
787696b6-5fbe-4ec7-9a7f-b76b132ac819
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
De Leonardis, Francesco
bf765a9b-1083-4579-975c-ef2893b739cb

Dell'Olio, Francesco, Passaro, Vittorio M.N., Mashanovich, Goran Z. and De Leonardis, Francesco (2008) Micro-racetrack coupled-resonator optical waveguides in silicon photonic wires. Journal of Optics A: Pure and Applied Optics, 10 (6), 1-11. (doi:10.1088/1464-4258/10/6/064003).

Record type: Article

Abstract

Coupled-resonator optical waveguide (CROW) structures including coupled micro-racetrack resonators realized using silicon photonic wires are theoretically investigated in this paper. An accurate modelling procedure has been developed. It takes into account the differences in optical coupling between two identical resonators and between a straight waveguide (bus waveguide) and a resonator. The modelling approach is based on a mixed, very general procedure, based on the transfer matrix approach for CROW investigation, coupled mode theory in a generalized form for characterization of coupling between adjacent resonators and between bus waveguides and resonators and the full-vectorial finite element method for performing coupling coefficient calculation and waveguides modal analysis. This technique can be adopted to model a wide spectrum of different CROW structures. As an explicative example, CROW structures including three coupled micro-racetrack resonators have been investigated. A large quality factor (~7 x 105) has been predicted for a proposed CROW structure when the quasi-TE mode is excited. The influence of fabrication tolerances on CROW structures has been also investigated.

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More information

Published date: April 2008
Organisations: Optoelectronics Research Centre, Photonic Systems Circuits & Sensors

Identifiers

Local EPrints ID: 356478
URI: https://eprints.soton.ac.uk/id/eprint/356478
ISSN: 1741-3567
PURE UUID: 51832480-bbc5-44d0-90bc-09093d96cd15

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Date deposited: 16 Sep 2013 13:36
Last modified: 22 Oct 2018 16:33

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Contributors

Author: Francesco Dell'Olio
Author: Vittorio M.N. Passaro
Author: Francesco De Leonardis

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