John Lehrer Zyskind

40 Gb/s WDM Transmission of Eight 5 Gb/s Data Channels Over Transoceanic Distances using the Conventional NRZ Modulation Format

The transmission of many Wavelength Division Multiplexed (WDM) channels over transoceanic distances can be limited by the nonlinear interactions between channels. In this work the nonlinear interactions were suppressed by tailoring the chromatic dispersion of the transmission fiber1 and operating the system at low channel power. These techniques made possible the transmission of eight 5 Gb/s Non-Return-to-Zero (NRZ) channels over 8000 km for a total transmission capacity of 40 Gb/s.

Signal power transients in optically amplified WDM ring networks

Summary form only given. In multiwavelength optical networks with wavelength add/drop (WAD), closed loops may be formed, which, with the erbium-doped fiber amplifiers (EDFAs) used to compensate the losses of network elements and fiber spans, can constitute ring laser cavities. Laser oscillations in the ring cavity, occurring if the round trip gain exceeds the loop loss, are expected to introduce additional noise and steal power from signal channels. Recently we reported that in such networks channels in service could suffer significant power penalties due to the ring laser oscillations. We believe we report the first experimental investigation of the time dependence of signal channel power in the event of channel loss due to link failure or network reconfiguration.

Long-Haul WDM Transmission Using 10 Gb/s Channels: A 160 Gb/s (16x10 Gb/s) 6,000 km Demonstration

Long-Haul Wavelength Division Multiplexing (WDM) transmission experiments that use Erbium-Doped Fiber-Amplifier (EDFA) repeaters have been reported using channel bitrates of 2.5 Gb/s to 20 Gb/s.