64 Gbit/s, 256 QAM Transmission Through Coherent Optical-Wireless Link at 61 GHz Using Simple and High OSNR Carrier Frequency Converter

We demonstrate a coherently-linked optical-wireless transmission in the 61 GHz band using a simple and high-performance injection-locking-based carrier-frequency converter. 64 Gbit/s, 256 QAM data were transmitted over a 10 km-SMF and over 40 m wirelessly.