CzechLight family of optical networking equipment

Abstract

CESNET is an association of universities and Academy of science of Czech republic. It is operating a national research and education network (NREN) interconnecting all university cities in the republic. On some lines it it very reasonable to use only one single fiber line. In this paper we discuss technology used on such lines in the CESNET backbone. The key motivation for CLA-based static DWDM systems is optical line deployment with the cost effective solution to get a few independent optical channels (typically 4–8) with capacity 1–10 Gbps for various data connections on one dark fiber pair.