Research On Photonic Generation Of Microwave And Millimeter-wave

In recent years, with the wireless communication、radio over fiber system、military radar and electronic countermeasures、the link between star and remote sensing rapid developing, in both the transmission rate and transmission capacity, are required a high quality of microwave millimeter wave source. Because of the high quality of microwave signal source is the foundation of all application system with the core in these fields. However, the conventional electrical methods due to the electronics technology limited, in producing the microwave signal by large limitation, especially the frequency rises above to the millimeter wave frequency band, facing the signal power is more and more small, and the signal frequency stability is not high enough, difficult to FM and frequency conversion, etc. Thanks to the advanced technology of microwave photonics, especially the photonics device using optical modulator, photoelectric detector, high nonlinear optical fiber optical device to produce very low phase noise, high frequency stability of microwave signal source of high quality obtained many achievements.In this paper, the current mainstream photoproduction of millimeter wave technology has been made the summary and conclusion, and the advantages and disadvantages of different methods have been compared and analyzed, and focus on the raw light millimeter wave technology can produce very low phase noise of the optoelectronic oscillator method, and method of the double loop of optoelectronic oscillator structured optoelectronic oscillator, the subordinate type optoelectronic oscillator, coupling type optoelectronic oscillator with different structure types of optoelectronic oscillator has carried on the detailed analysis and introduction.At the completion of the effect of the stimulated Brillouin scattering in optical fiber and the basic theory of optoelectronic oscillator bedding. This paper proposes a new optical method of millimeter wave and through introducing the dual parallel Mach-Zehnder modulator in a high nonlinear fiber, adopting the mode of double sideband modulation of carrier phase shift and the stimulated Brillouin scattering effect of the gain spectrum and loss spectrum superposition cancel each other out in order to expand the generated microwave signal frequency multiplier, Finally, after theoretical analysis, modeling and simulation by the Matlab, theoretically realized in 52.785 GHz to 52.785 GHz frequency range for tunable microwave millimeter wave.In the photonic way of generating microwave millimeter wave, due to the structure of the double loop optoelectronic oscillator has more advantages in lower phase noise, so in the construction of the complete the system modeling and simulation in this paper, by applying of the OptiSystem software we simulated and compared the optoelectronic detector and polarization beam splitter based multi-channel structure noise reduction effect.