Shinji Matsuoka

Field transmission by using a commercially-ready 43 Gbit/s DWDM system employing RZ-DQPSK transponders in high PMD installed fiber

Using a commercially-ready 40-lambda DWDM system, RZ-DQPSK is confirmed to offer excellent DGD tolerance, up to 25 ps, through high PMD installed DSFs.

Over 5-months Long-Term PMD Continuous Measurement in Installed Fiber Cables with an Exposed Fiber Section

We report continuous PMD measurements (> 5-months) of installed fiber cables with exposed fiber section. Standard deviations of measured mean DGD with large daily fluctuations lie within theoretical uncertainties. Accuracy is related to measurement intervals.

43 Gb/s Pre-chirped RZ DQPSK WDM Signal Transmission over 500-km and 12 OADM Nodes

43Gb/s Pre-chirped RZ-DQPSK WDM signal is successfully transmitted over 500-km with 12 OADM nodes. Pre-chirping suppresses the nonlinear penalty of WDM signals even though each has a level of different accumulated dispersion.

OSNR enhancement using a novel pump-wavelength detuning scheme for forward-pumped distributed Raman amplification in a 40 Gb/s-based WDM in-line amplifier transmission system

OSNR enhancement by using a novel pump-wave length detuning scheme for forward-pumped distributed Raman amplification in a 40 Gb/s-based L-band WDM in-line amplifier transmission system is experimentally verified for the first time.