Ciena Upgrades Caucasus Online’s Black Sea Fibre Optic Network Ciena Press Release May 15, 2018 HANOVER, Maryland —  Caucasus Online has selected Ciena (NYSE: CIEN) to enhance its Black Sea fibre optic network to realize an increase in data transfer capacity of up to 5 Tbps. By deploying Ciena’s GeoMesh Extreme submarine solution with high-density [...]