All-Optical Transmission and Wavelength Conversion of 40 Gb/s Signals over Ultra-Long Haul Distances

All-optical 3R regenerators and regenerative all-optical wavelength converters are envisioned to perform transmission over ultra-long haul distances and to overcome wavelength blocking in TDM networks. 

We review a 3R regenerator and an all-optical wavelength converter that have been used to demonstrate 40 Gb/s transmission over one million km of fiber.