Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2326405
