BROADBAND RF PHOTONIC CHANNELIZATION

Abstract

A Microwave frequency channelization scheme has been proposed and demonstrated with the help of Optical frequency comb, Mach-zhender modulator, Fabry Parot Filter, Optical Demux. In the proposed channelizer an incoming wideband is multicast by Optical Frequency comb, spectrally sliced by Fabry perot filter and physically separated by demux. In comparison to previous proposals we have used OFC for channelization to have more uniform, noise immune and simple channelization. We have used SSB-SC Modulation instead of DSB-SC modulation so that we can channelize our signal to 40-50 GHz range than 19.5 proposed in previous paper. As precision of measurement and range to which we can process our Microwave signal depends on number of equally spaced line, we have designed a 36 line OFC and used in our proposal which is much greater than 6 lines used by previous proposal. As an illustration only we have used only 15 line OFC in our experiment but we can also use 36 line OFC wherever required. As an application multiple frequencies can be processed and measured simultaneously so that our processing is fast, efficient and easy to handle by our premature electronics devices.