Terabit superchannels for high spectral efficiency transmission

Abstract

Multi-carrier superchannels based on coherent optical orthogonal frequency division multiplexing (CO-OFDM) supporting 400-Gb/s and 1-Tb/s data rates at high spectral efficiencies are reviewed. The generation and detection of such superchannels and their transmission and routing performances are elaborated.

Transmission of a 1.12 Tb/s superchannel over 452 km fiber

“…Such high bit rate signal, comprising multiple subcarriers locked in frequency and modulated in a synchronous mode, is known as superchannel. In this signal, the interference between the modulated subcarriers can be eliminated by controlling the phase of adjacent lines [5]. It has been…”

Spectrally-efficient 17.6-Tb/s DWDM optical transmission system over 678 km with pre-filtering analysis

“…Optical networks have rapidly evolved in a way that, nowadays, presents reconfigurability characteristics and are capable of handling dense wavelengthdivision-multiplexing (DWDM) traffic with 100-Gb/s per-channel [2]. Today, high-speed systems targeting 400-Gb/s and 1-Tb/s per-channel are being intensively researched [3]. Since the beginning of its existence the optical transmission systems were based on on-off keying (OOK) modulation up to 10-Gb/s.…”

Field trial of a 15 Tb/s adaptive and gridless OXC supporting elastic 1000-fold all-optical bandwidth granularity

“…This vast range of traffic granularities is expected to expand in the future as networks migrate to support higher transmission rates beyond 100G. There is a significant amount of research focusing on high-capacity superchannels at 400 Gb/s [2], 1 Tb/s [3] and beyond [4]. Such superchannels may require channel spacings that would not be compatible with today's 100-GHz or 50-GHz ITU grid e.g.…”