Resonance Wavelength of Integrated Optical Ring Resonator With Small Radius of Curvature

Author

Wageeh, Amr ; El-Sabban, Salwa ; Khalil, Diaa

Author_Institution

Helwan Univ., Cairo, Egypt

Volume

26

Issue

7

fYear

2014

fDate

1-Apr-14

Firstpage

641

Lastpage

644

Abstract

In this letter, we present a new formula for the resonance wavelength of an integrated optical ring resonator with small radius of curvature. Our formula is based on the expansion of the guide effective index as a function of the wavelength and then solving the resonance equation for the extraction of the resonance wavelength and free spectral range. The obtained results are compared with the finite difference time domain results and very good agreement is obtained. Using this new formula, we showed that the error in the resonance wavelength is reduced more than an order of magnitude from ~ 5.73% to be below 0.45%.

Keywords

finite difference time-domain analysis; integrated optics; optical dispersion; optical resonators; finite difference time domain method; free spectral range; guide effective index; integrated optical ring resonator; resonance equation; resonance wavelength extraction; small curvature radius; Dispersion; Finite difference methods; Indexes; Optical ring resonators; Optical waveguides; Resonant frequency; Time-domain analysis; Integrated optics; optical dispersion; optical resonators; ring resonators;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2301755

Filename

6718002