A Wide-Tuning Silicon Ring-Resonator Composed of Coupled Freestanding Waveguides

Author

Hoang Manh Chu ; Hane, Kazuhiro

Author_Institution

Dept. of Nanomech., Tohoku Univ., Sendai, Japan

Volume

26

Issue

14

fYear

2014

fDate

15-Jul-14

Firstpage

1411

Lastpage

1413

Abstract

A wide-range wavelength-tunable silicon microring resonator is proposed using a microelectromechanical actuator. The microring consists of two U-shaped silicon freestanding waveguides and two directional couplers. The circumference of the microring is varied by the actuator. The wavelength dependence of the couplers is compensated by adjusting the coupling length while varying the circumference. The initial circumference of the microring is 19.1 μm and the free spectral range is 21 nm. The resonant wavelength of the microring is varied by 27 nm at the applied voltage of 25 V with negligible power consumption.

Keywords

elemental semiconductors; micro-optomechanical devices; microactuators; micromechanical resonators; optical directional couplers; optical resonators; optical tuning; optical waveguides; silicon; Si; U-shaped silicon freestanding waveguides; coupled freestanding waveguides; coupling length; directional couplers; microelectromechanical actuator; microring circumference; power consumption; resonant wavelength; voltage 25 V; wavelength dependence; wide-range wavelength-tunable silicon microring resonator; wide-tuning silicon ring-resonator; Actuators; Couplers; Couplings; Optical resonators; Optical waveguides; Silicon; Voltage measurement; Micro-ring resonator; notch filter; optical microelectromechanical devices;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2326405

Filename

6819783