Title :
Optical mm-Wave Signal Generation by Frequency Quadrupling Using an Optical Modulator and a Silicon Microresonator Filter
Author :
Xu, Lin ; Li, Chao ; Chow, C.W. ; Tsang, Hon Ki
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Hong Kong
Abstract :
By adjusting the direct current (DC) bias on an electrooptic modulator to suppress the first-order sideband and subsequently using a double-waveguide micro-ring resonator to filter out the optical carrier, millimeter (mm)-wave signal was generated at a frequency of four times the 10-GHz local oscillator. A monolithic integrated silicon-based optical mm-wave signal generator by frequency quadrupling is proposed. A silicon integrated microresonator filter was fabricated and its design parameters are given. High extinction ratio optical mm-wave signal was obtained. The single sideband noise spectrum of the generated 40-GHz optical signal was measured, showing similar performance when compared with that generated by a radio-frequency synthesizer.
Keywords :
electro-optical modulation; elemental semiconductors; integrated optics; micro-optomechanical devices; micromechanical resonators; microwave photonics; millimetre wave generation; optical fabrication; optical harmonic generation; optical resonators; optical waveguide filters; radio-over-fibre; silicon; ROF system; Si; double-waveguide microring resonator; electrooptic modulator; first-order sideband suppression; frequency 10 GHz; frequency 40 GHz; frequency quadrupling; monolithic integrated silicon-based optical millimeter-wave signal generator; optical carrier; radio-over-fibre; silicon microresonator filter fabrication; single-sideband noise spectrum measurement; Frequency quadrupling; microring resonator; millimeter (mm)-wave;
Journal_Title :
Photonics Technology Letters, IEEE
Conference_Location :
12/9/2008 12:00:00 AM
DOI :
10.1109/LPT.2008.2010056
