Radio-over-fiber transport system employing free-space optical communication scheme with parabolic reflector

Abstract

A bidirectional radio over fiber (ROF) transport system in combination with optical free space transmission schemes based on WDM, external light injection and optical add-drop multiplexing techniques is proposed and demonstrated. A diverging lens at the fiber end and a parabolic reflector at the receiver end are designed to employ optical free space transmission scheme in the configuration which transmits data-stream of 1~10 Gbps at 12.5 GHz. Excellent BER values and impressive eye diagrams for both down/uplink have shown that our proposed system is convenient and suitable for 80 km optical and 10 m optical free space transmission.