Precise distributed multiplexing of 200-Gb/s Nyquist-WDM using fiber frequency conversion
Tuesday, March 19, 2013 - 08:00
in Physics & Chemistry
Fraunhofer Heinrich Hertz Institute (HHI) and Fujitsu Laboratories Ltd. have achieved locally distributed wavelength-division multiplexing with exactly defined frequency spacing. Four Nyquist-shaped 25-GBd quadrature phase-shift keying (QPSK) modulation channels were successfully multiplexed to a 200-Gb/s super-channel. The researchers used optical frequency conversion in nonlinear fiber to realize nearly symbol rate spaced sub-channels.