title: No guard-band wavelength translation of Nyquist OTDM-WDM signal for spectral defragmentation in an elastic add-drop node.
abstract: We demonstrate a seamless spectral defragmentation in an elastic all-optical add-drop node based on wavelength division multiplexing (WDM) channels of Nyquist optical time division multiplexing (OTDM) signal. A 172 Gbaud Nyquist OTDM signal occupying a 215 GHz range is elastically shifted adjacent to its neighboring channel, completely filling a variable spectral gap caused by the dropped channel. The frequency shift is done in a dual-stage polarization-diversity four wave mixing-based converter using polarization-maintaining highly nonlinear fiber. The spectrally defragmented signals are successfully transmitted over a 80 km fiber link with BER<10(-9).
authors.affiliation: National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan. hung.nguyen@aist.go.jp
authors.forename: Hung Nguyen
authors.initials: HN
authors.lastname: Tan
authors.forename: Ken
authors.initials: K
authors.lastname: Tanizawa
authors.forename: Takashi
authors.initials: T
authors.lastname: Inoue
authors.forename: Takayuki
authors.initials: T
authors.lastname: Kurosu
authors.forename: Shu
authors.initials: S
authors.lastname: Namiki