Title :
Utilization of Mach-Zehnder Modulators to Generate Fourth Harmonic Microwave Frequencies - Theory and Experiment
Author :
Motamedi, Ali ; Vahldieck, Ruediger
Author_Institution :
Laboratory for Lightwave Electronics, Microwaves and Communications (LLiMiC), Department of Electrical and Computer Engineering, University of Victoria, P.O. Box 3055, Victoria, B.C., Canada V8W 3P6
Abstract :
A Mach-Zehnder modulator biased at quadrature point is used to generate the fourth hannonic of a fundamental frequency while suppressing all the odd harmonics and most importantly the 2nd hannonic by more than 35 dB. The system is tested and verified. A novel method for transmission of modulated data using direct modulation of the laser diode driving the electro-optic modulator is also introduced which results in a modulated microwave signal at the frequency of the fourth hannonic at the output of the receiver. It is shown that the phase noise of the fourth harmxonic frequency is no worse than that for an ideal multiplier. Compared with previous work, this solution simplifies the system implementation considerably.
Keywords :
Microwave frequencies; Microwave generation; Microwave theory and techniques; Optical attenuators; Optical filters; Optical interferometry; Optical modulation; Optical receivers; RF signals; Signal generators;
Conference_Titel :
Microwave Conference, 1997. 27th European
Conference_Location :
Jerusalem, Israel
DOI :
10.1109/EUMA.1997.337964
