The scientific manuscript was published on IEEExplore webpage with contributors from RTU Institute of Telecommunications – Xioadan Pang, Oskars Ozolins and Vjaceslavs Bobrovs.
What is the paper about?
A free-space optical (FSO) transmission system is experimentally demonstrated in the long-wave infrared (LWIR, 9.15 μm ) using a directly modulated quantum cascade laser (DM-QCL) and a commercial mercury-cadmium-telluride infrared photovoltaic detector. At room temperature, the DM-QCL is current-modulated by discrete multitone signals pre-processed with bit-/power-loading. Up to 5.1 Gbit/s data rate is achieved with bit error rate performance below the 6.25% overhead hard-decision forward error correction limit of 4.5×10−3 , enabled by a frequency domain equalizer. The stability study of the FSO system is also performed at multiple temperature values. This study can provide a valuable reference for future terrestrial and space communications.
The copy of the manuscript can be found on the IEEExplore webpage.
Find out more on the research of the Institute of Telecommunications on the projects page and blog page related to research papers.