Patent ID: 8873963

Claim:
A substantially 400 Gb/s optical transceiver, comprising: a substantially 400 Gb/s optical transmitter comprising: a set of four substantially 100 Gb/s tunable optical transmitters, each of the four substantially 100 Gb/s tunable optical transmitters transmitting a substantially 100 Gb/s optical signal in a wavelength division multiplexed form over four channel wavelengths selected such that the resulting 16 channel wavelengths are different from each other and are suitable for wavelength division multiplexing (WDM), wherein the 16 different channel wavelengths comprise channel wavelengths having the four approximate center wavelengths specified in 100 Gigabit Ethernet (100 GbE) physical layer (PHY) specifications, and 12 other channel wavelengths in International Telecommunication Union (ITU) specified O-band; and an optical transmission interface (OTRIN) comprising: a set of four 1:4 wavelength division demultiplexers which are operative to demultiplex the substantially 100 Gb/s optical signals to produce substantially 25 Gb/s optical signals over each of the 16 different channel wavelengths; and a 16:1 wavelength division multiplexer which is operative to multiplex the substantially 25 Gb/s optical signals of the 16 different channel wavelengths to generate a substantially 400 Gb/s optical signal for transmission.