Eur. Phys. J. B 47, 137-143 (2005)
https://doi.org/10.1140/epjb/e2005-00299-7

Optical transmission properties of light propagation through Fibonacci-class ring-resonators

¹ Department of ECE, University of Toronto, 10 King's College Road, Toronto, M5S 3G4, Canada
² OIC Research Lab., Faculty of Electrical and Computer Engineering, Tabriz University, Tabriz 51664, Iran

Corresponding author: ^a rostami@tabrizu.ac.ir

Received: 11 November 2004
Revised: 3 March 2005
Published online: 21 September 2005

Abstract

An interesting topology with easy integration capability (from mask designing aspect) for optical filters using Fibonacci-class (FC(J,n)) ring-resonators is introduced. For some special cases, analytical transfer function (Transmission Coefficient ) is obtained and corresponding simulated result is illustrated. In this work, optical multi-band filter design and analysis using Fibonacci-class ring resonators is considered. With suitable selection of system parameters and FC(J,n), we report multi-band characteristic for this structure. Also, dominant factors effects on multi-band operation are shown. We show that the coupling coefficients, effectively affects (e.g. generation or annihilation of additional band) the multi-band properties obtained in proposed structure. Also, the bandwidth and position of additional band can be controlled using Fibonacci-class basic elements (A, B) parameters such as rings diameters. Also, proposed system is easier than general multistage rings coupled to main waveguide from implementation point of view.