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This paper describes the technical aspects of optical access solutions for mobile fronthaul application. The mobile context and main constraints of fronthaul signals are presented. The need for a demarcation point between the Mobile operator and the Fiber provider is introduced. The optical solution to achieve such a network is discussed. A WDM network with… (More)
Modulation cancellation and signal inversion are demonstrated within reflective semiconductor optical amplifiers (RSOAs). The effect is useful to implement colorless ONUs where downstream signals need to be erased in order to reuse the carrier for the upstream.
As WDM channel spacing continues to decrease in size, and with the application of tunable lasers in DWDM (dense wavelength division multiplexing) systems, we demonstrate the ability of electronically tuned lasers to cope with demanding channel spacing and inevitable low frequency setting error. By finding the stable operating points of a single tunable… (More)