Optically synchronized oscillators for low phase noise microwave and RF frequency distribution

Various circuits dedicated to high spectral purity signal transmission using fiber optics are presented. Three application types are investigated: reference frequency distribution at 10 MHz, IF distribution at 800 MHz and microwave synthesized signals at 3.5 GHz. The reception circuit is an optically synchronized oscillator, which provides a good signal conditioning far from the carrier while maintaining the high input signal quality close to the carrier.