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We propose an all-optical carrier regeneration scheme for wavelength independent optical network units based on a Brillouin/Erbium fiber laser. It is experimentally evaluated through bidirectional transmission at 1.25 Gb/s.
With the help of the two-wave competition (TWC) in saturated ultra-long semiconductor optical amplifiers (UL-SOAs) the extinction ratio (ER) of high-speed optical signals can be regenerated. We investigate the UL-SOAs' optimum operating range for the ER improvement. As a result, we present driving conditions for a stable regeneration scheme.
A bidirectional WDM-PON exploiting reflective semiconductor amplifiers at the optical network unit (ONU) and a multiwavelength RZ pulsed signal comb at the Central Office (CO) is presented. The reflective SOA acts simultaneously as downstream modulation eraser, upstream amplifier and modulator, thus making the ONU wavelength-independent.
A novel scheme to overlay the DPSK broadcast signal onto the NRZ point-to-point signal in a WDM-PON is proposed. Selective broadcast is realized by adjusting the extinction ratio of the NRZ signals on individual wavelengths.
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