Helmolt, C. vonC. vonHelmoltKruger, U.U.KrugerKruger, K.K.Kruger2022-03-092022-03-091997https://publica.fraunhofer.de/handle/publica/3295612-s2.0-0030676254In future mobile broadband communication systems, optical fiber will be an attractive means of connecting the mobile switching centre (MSG) with the base stations. In the uplink configuration a downconversion of the microwave signal by mixing is required, which might be attractive to be done optically. We demonstrate experimentally the downconverter function of a mode-locked laser (MLL) with an optical intensity modulator and a photodetector (PD) in the uplink configuration.enbroadband networkselectro-optical modulationlaser mode lockingmicrowave linksmicrowave mixersmobile communicationoptical fibre networksoptical frequency conversionphotodetectorssemiconductor lasersmicrowave fiber-optic downconvertermobile broadband communication systemsoptical fibermobile switching centrebase stationsuplink configurationmicrowave signal downconversiondownconverter functionmode-locked laseroptical intensity modulatorphotodetector621conference paper