Journal article
Pump-To-Signal Intensity Modulation Transfer Characteristics in FOPAs: Modulation Frequency and Saturation Effect
Department of Photonics Engineering, Technical University of Denmark1
Ultra-fast Optical Communication, Department of Photonics Engineering, Technical University of Denmark2
Fiber Optics, Devices and Non-linear Effects, Department of Photonics Engineering, Technical University of Denmark3
Nanophotonics, Department of Photonics Engineering, Technical University of Denmark4
This paper reports a comprehensive study of pump- to-signal intensity modulation transfer (IMT) in single-pump fiber optic parametric amplifiers (FOPAs). In particular, the IMT is studied for the first time for high-frequency fluctuations of the pump as well as in the saturated gain regime. The IMT cut-off frequency in typical single-pump FOPAs is around 100–200 GHz.
The possibilities to shift this frequency based on dispersion and nonlinearities involved in the parametric gain are discussed. The severe IMT to the signal at low modulation frequencies can be suppressed by more than 50% in the gain saturation regime with respect to the linear gain operation. Experimental results confirm the validity of the numerical study.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2012 |
| Pages: | 3061-3067 |
| ISSN: | 15582213 and 07338724 |
| Types: | Journal article |
| DOI: | 10.1109/JLT.2012.2211997 |
| ORCIDs: | Rottwitt, Karsten and Galili, Michael |
Four-wave mixing Intensity modulation Optical fiber Optical parametric amplifiers Optical saturation
Cutoff frequency Fluctuations Frequency modulation Gain IMT IMT cut-off frequency Optical fiber amplifiers four-wave mixing gain saturation regime high-frequency fluctuations intensity modulation modulation frequency numerical study optical fibre dispersion optical modulation optical parametric amplifiers optical pumping optical saturation optical transfer function parametric gain pump-to-signal intensity modulation transfer characteristics saturation effect single-pump FOPA single-pump fiber optic parametric amplifiers
