D-Lightsys, a Radiall Company, designs and manufactures high performance optical interconnect solutions for severe environment applications. D-Lightsys products are based on optoelectronic components. Their transmitters are based on 850 nm Vertical Cavity Surface Emitting Lasers (VCSEL). The company headquarters are located in Aubervilliers, near Paris, France. Products are manufactured in Isle d’Abeau, near Lyon, and are sold through the Radiall sales network under the D-Lightsys brand.