Optical networks utilize light to carry information across fiber-optic cables. An optical transport network (OTN) is a set of optical network elements (ONE) connected by optical fiber links, and provides functionality of transport, multiplexing, switching, management, supervision and survivability of optical channels carrying client signals. Various electrical components are required in optical networks, such as optical line cards. An optical line card is a tributary to a combined optical pipe where the client network element is input over a fiber pair at a fixed wavelength, the data is encoded/decoded, and output on a specific ITU grid wavelength via a fiber pair. An optical line card also terminates network traffic that is being received over an optical fiber interface. Renesas offers products to support different types of line cards, including OC-3, OC-12, OC-48, OC-192, and 10 Gigabit Ethernet line cards.

Renesas offers solutions for optical networking in the following categories: