Determination of bandwidth and free spectral range for the silicon based ring resonators and racetrack microcavity resonators

Author

Khuntaweetep, S. ; Somkuarnpanit, S. ; Sae-tang, K.

Author_Institution

Fac. of Eng., King Mongkut´´s Inst. of Technol., Bangkok

Volume

1

fYear

2004

fDate

6-9 Dec. 2004

Firstpage

497

Abstract

This paper determines the free spectral range, FSR, and the half-power bandwidth, HPBW, of the racetrack microresonator, RTM, against the ring microresonator, RM, on silicon substrate. The accurate numerical FDTD has been used to calculate its characteristics in optical communication wavelengths. At the optimum size of the device, the spectral response is calculated, which leads to two relationships between HPBW against the coupling efficiency and FSR against the racetrack round trip. These relationships can be used to determine the possibly maximum FSR and the least HPBW for the RM. Both parameters are degraded for the high coupling RTM

Keywords

cavity resonators; microcavities; substrates; FSR determination; coupling efficiency; free spectral range determination; half-power bandwidth determination; optical communication wavelengths; racetrack microcavity resonators; racetrack microresonator; racetrack round trip; silicon based ring resonators; silicon substrate; Bandwidth; Degradation; Finite difference methods; Maxwell equations; Microcavities; Optical fiber communication; Optical resonators; Optical ring resonators; Silicon compounds; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on

Conference_Location

Tainan

Print_ISBN

0-7803-8660-4

Type

conf

DOI

10.1109/APCCAS.2004.1412806

Filename

1412806