60-GHz-band full-duplex radio-on-fiber system using two-RF-port electroabsorption transceiver

In this letter, a full-duplex radio-on-fiber system using a newly developed 60-GHz-band optical transceiver is investigated, We fabricated a 60-GHz-ba nd two-radio-frequency (RF)-port electroabsorption transceiver (EAT) module , which is the first developed 60-GHz-band optical trasceiver in the world. The EAT module has individual RF input and output ports, each with impedan ce-matching circuits that enhance modulation and detection efficiencies nea r 60 GHz. A radio-on-fiber testbed adopting the EAT has an advantage that a base station becomes the simplest configuration, which basically consists of only the 60-GHz-band EAT. Using the radio-on-fiber testbed, the simultan eous transmission of 59.6-GHz (downlink) and 60.0-GHz (uplink) signals with data of 156 Mb/s is experimentally demonstrated.