Hybrid and monolithic integrated optic/millimeter-wave converters for 60 GHz radio-over-fiber systems
Hybrid as well as monolithic integrated /spl lambda/=1.55 /spl mu/m optic/millimeter-wave converters were developed and investigated experimentally based on detailed microwave simulations. Both converters working near 60 GHz showed responsitivities of about 1 A/W in good agreement with the simulations.
Transmission Experiments with Optically Generated Carriers in the 60 GHz-Region
Bidirectional and 2-channel 155 Mbit/s transmissionexperiments in the OQPSK format are reported usingoptically generated millimeter-waves at frequencies inthe 60 GHz band. By applying the sideband injectionlocking technique the remotely generatedmillimeter-wave signals depict quartz accuracy and lowphase noise <−100 dBc/Hz at offset frequencies≥1 MHz.
Full-duplex broadband millimetre-wave optical transport system for fibre-wireless access
A full-duplex, optical feeder network for wireless access operating at 39 GHz is presented. The system transports 155 Mbit/s of data and three video channels downstream, and 51.8 Mbit/s upstream over 40 km of standard singlemode fibre. The 39 GHz carrier signal was generated using a novel tripling technique which enables low frequency electronics and optical components to be implemented in the central office. The architecture also incorporates simple, low cost remote base-stations with no millimetre-wave upconverting mixers required. To further minimise cost, an LED was used as the optical source for upstream transmission.