title: 2.56 Tbit/s/ch (640 Gbaud) polarization-multiplexed DQPSK non-coherent Nyquist pulse transmission over 525 km.
abstract: We demonstrate a single-channel 2.56 Tbit/s polarization-multiplexed DQPSK transmission using 640 Gbaud non-coherent optical Nyquist pulses. By virtue of a large tolerance to polarization-mode dispersion, the detrimental depolarization-induced crosstalk was reduced by 3.8 dB compared with RZ pulses. As a result, the transmission distance was substantially extended to 525 km compared with the distance of 300 km obtained with a Gaussian pulse.
authors.forename: Koudai
authors.initials: K
authors.lastname: Harako
authors.forename: Daiki
authors.initials: D
authors.lastname: Seya
authors.forename: Daiki
authors.initials: D
authors.lastname: Suzuki
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Hirooka
authors.forename: Masataka
authors.initials: M
authors.lastname: Nakazawa