Ciena Corp. engages in the provision of network and communication infrastructure. It operates through the following segments: Converged Packet Optical; Packet Networking; Optical Transport; and Software and Services. The Converged Packet Optical segment develops and sells optical processors, switching systems, and operating system software. The Packet Networking segment includes service delivery switches, services aggregation switches, and ethernet packet configurations. The Optical Transport segment manufactures and trades optical transport systems, common photonic layer, data networking products, data center interconnection, and virtual networks. The Software and Services segment provides wide are network controller, network functions virtualization platform, and software applications. The company was founded by Patrick H. Nettles in November 1992 and is headquartered in Hanover, MD.