Title :
A Photonic Microwave Frequency Quadrupler Using Two Cascaded Intensity Modulators With Repetitious Optical Carrier Suppression
Author :
Zhang, Jian ; Chen, Hongwei ; Chen, Minghua ; Wang, Tianliang ; Xie, Shizhong
Author_Institution :
Tsinghua Univ., Beijing
fDate :
7/15/2007 12:00:00 AM
Abstract :
We theoretically analyzed and experimentally demonstrated a novel 4- to 40-GHz frequency quadrupler for radio-over- fiber systems. By using an optical carrier suppression modulation scheme in two cascaded intensity modulators, four-fold microwave or millimeter wave signals are optically generated without the need for an optical and electrical notch filter to remove the residual carrier components. Moreover, the limitation of high drive voltage is greatly reduced through tandem intensity modulation with pi/2 phase shift between two driving signals.
Keywords :
intensity modulation; microwave photonics; optical communication equipment; optical modulation; radio-over-fibre; cascaded intensity modulators; four-fold microwave signals; frequency 4 GHz to 40 GHz; millimeter wave signals; optical carrier suppression modulation; optically generated signals; phase shift; photonic microwave frequency quadrupler; radio-over- fiber systems; radio-over-fiber system; repetitious optical carrier suppression; residual carrier component removal; tandem intensity modulation; Intensity modulation; Microwave filters; Microwave frequencies; Microwave generation; Optical devices; Optical fiber filters; Optical filters; Optical modulation; Signal generators; Voltage; Microwave frequency quadrupler; optical intensity modulator; radio over fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.899462
