Fiber Optical Parametric Amplifier Performance in a 1-Tb/s DWDM Communication System

All-optical manipulation of non-degenerate FWM conversion bandwidth by gain-transparent SBS

“…Fiber-based four-wave mixing (FWM) has been extensively investigated for various applications in optical signal processing such as wavelength conversion and parametric amplification [1,2]. It offers advantages in being transparent to the modulation format, bit rate, and communication protocol.…”

Parametric amplification and phase preserving amplitude regeneration of a 640 Gbit/s RZ-DPSK signal

“…So far, the highest total data capacity to be amplified in a single-pump FOPA has consisted of 26 wavelength-division-multiplexed (WDM) return-to-zero differential-phase-shift-keying (RZ-DPSK) modulated signals at 43.7 Gbit/s [4] resulting in a total data rate of 1.1 Tbit/s. Crosstalk mainly limits the amplification performance of WDM signals in parametric amplifiers due to four-wave mixing (FWM) between the channels [5,6].…”

Parametric Amplification of a 640 Gbit/s RZ-DPSK Signal

“…In addition, the quasi-instantaneous gain response of FOPAs makes them attractive for high speed signal processing purposes. So far, the highest capacity amplified in a single-pump FOPA has consisted of 26 wavelength-division-multiplexed (WDM) return-tozero differential-phase-shift-keying (RZ-DPSK) modulated signals at 43.7 Gbit/s [3]. Crosstalk mainly limits the amplification performance of WDM signals in parametric amplifiers due to four-wave mixing between the channels.…”