title: 2.56 Tbit/s/ch polarization-multiplexed DQPSK transmission over 300 km using time-domain optical Fourier transformation.
abstract: We demonstrate a 2.56 Tbit/s/ch polarization-multiplexed single-carrier transmission over 300 km using subpicosecond DQPSK signals. We adopted an ultrafast time-domain optical Fourier transformation technique to reduce waveform distortions. For such an ultrashort optical pulse, depolarization components resulting from second-order polarization-mode dispersion (PMD) become a dominant factor as regards signal distortion because of the broad signal bandwidth. The influence of inter-polarization crosstalk induced by second-order PMD, is presented in detail.
authors.affiliation: Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Sendai, 980-8577 Japan. gpy@riec.tohoku.ac.jp
authors.forename: Pengyu
authors.initials: P
authors.lastname: Guan
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Hirano
authors.forename: Koudai
authors.initials: K
authors.lastname: Harako
authors.forename: Yutaro
authors.initials: Y
authors.lastname: Tomiyama
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Hirooka
authors.forename: Masataka
authors.initials: M
authors.lastname: Nakazawa