Journal article
Amplitude regeneration of RZ-DPSK signals in single-pump fiber-optic parametric amplifiers
The input power tolerance of a single-pump fiber-optic parametric amplifier (FOPA) is experimentally shown to be enhanced for return-to-zero differential phase-shift keying (RZ-DPSK) modulation compared to RZ ON–OFF keying modulation at 40 Gb/s. The improved nonlinear tolerance is exploited to demonstrate amplitude regeneration of a distorted RZ-DPSK signal in a gain-saturated FOPA.
An optical signal-to-noise ratio penalty of 3.5 dB after amplitude distortion is shown to be reduced to 0.2 dB after the FOPA, thus clearly demonstrating the regenerative nature of saturated FOPAs for RZ-DPSK modulation.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2009 |
| Pages: | 872-874 |
| ISSN: | 19410174 and 10411135 |
| Types: | Journal article |
| DOI: | 10.1109/LPT.2009.2019968 |
| ORCIDs: | Rottwitt, Karsten |
Differential amplifiers Differential phase shift keying Differential phase-shift keying (DPSK) Fiber nonlinear optics Nonlinear distortion Nonlinear optics Optical distortion Optical fiber amplifiers Phase modulation Power amplifiers RZ-DPSK signal modulation Stimulated emission amplitude regeneration differential phase shift keying fiber-optic parametric amplifier (FOPA) gain-saturated FOPA nonlinear tolerance optical distortion optical fibre communication optical modulation optical parametric amplifiers optical pumping optical regeneration optical repeaters optical saturation return-to-zero differential phase-shift keying signal distortion single-pump fiber-optic parametric amplifier
