Frequency Multiplication Technology On Photonic Generation Of Millimeter-wave

Radio-over-Fiber is a kind of communications technology which is the combination of the optical communications and the microwave communications. It is a discipline which studies the interactions of the photon signals and microwave signals. Making full use of the optical fiber communication’s advantages, such as bandwidth, low-loss and anti-electromagnetic interference, etal. ROF meets the need of next-generation broadband wireless access. Millimeter-wave signal generation is one of the key technologies on ROF. This thesis focuses on the external modulator based on millimeter-wave signal generation methods, combined with four-wave mixing, stimulated Brillouin scattering and Sagnac ring to achieve photo-generated millimeter wave signal in different frequency multiplication factors.Firstly, this thesis analyzes the physical principles of electro-optic modulator. Then it introduces three basic modulation methods, such as DSB, SSB and OCS-DSB. This thesis gives the definitions of the OSSR, RFSSR, CNR and phase noise performance.Secondly, based on the external modulator, we propose two schemes of optical octave millimeter-wave signal generation and a realization of optical millimeter-wave signal generation by fourteen. The simulation results indicate that in the absence of any optical and electrical filter, OSSR reaches 28dB and RFSSR reaches 23.5dB in the octave scheme of the cascading DPMZ, the best OSSR achieves 20.5dB and the RFSSR reaches 41dB in the octave scheme of the parallel program DPMZ. The OSSR reaches 48dB and the RFSSR achieves 33.6dB in the scheme of the fourteen.Then, the thesis analyzes octave millimeter-wave signal generation based on the external modulator and Sagnac ring. The experiment realizes the octave millimeter-wave signal of 3GHz LO signal. In the absence of any electrical and optical filter conditions, OSSR is up to 18.4dB, RFSSR is up to 16.1dB and phase noise is-83.8dBc/Hz@1kHz, which meets the phase noise deterioration theoretical value. As this program does not require any filter,this method is highly adjustable. We also accomp lish the experiments of 6GHz,6.3 GHz,6.6GHzand 6.9GHz.Finally, the thesis gives the realization of optical 18 times based on the four-wave mixing. We put the SOA in a loop and get higher harmonics using four-wave mixing effect of SOA. Then the FBG filters out the required sidebands. The six-octave optical millimeter-wave signals method is based on the combination of external modulator, four-wave mixing effect and polarizing flutter pull of stimulated Brillouin scattering.VPI simulation platform was validated.