Title :
Gain-shifted dual-wavelength-pumped thulium-doped fiber amplifier for WDM signals in the 1.48-1.51-μm wavelength region
Author :
Kasamatsu, T. ; Yano, Y. ; Ono, T.
Author_Institution :
Fundamental Res. Labs., NEC Corp., Tsukuba, Japan
Abstract :
We constructed a gain-shifted dual-wavelength-pumped (1.05/1.56 μm) thulium doped fiber amplifier (TDFA) for wavelength-division-multiplexing (WDM) signals in the 1.48-1.51-μm, wavelength region. We obtained a gain of larger than 20 dB and a noise figure of less than 7 dB in the range from 1478 to 1505 nm. Amplifier saturated output power was +20.1 dBm with an optical-to-optical conversion efficiency of 9.1% for 12-channel WDM signals. We also obtained a successful bit error rate performance for signals modulated at 10 Gb/s when the gain-shifted TDFA was used in an optical preamplifier configuration. These results confirm the feasibility of using the gain-shifted TDFA as both a booster and an optical preamplifier in WDM networks.
Keywords :
error statistics; laser beams; laser noise; optical fibre amplifiers; optical fibre communication; optical pumping; optical saturation; optical transmitters; thulium; wavelength division multiplexing; 1.05 mum; 1.48 to 1.51 mum; 1.56 mum; 10 Gbit/s; 1478 to 1505 nm; 20 dB; 7 dB; 9.1 percent; Tm-doped fiber amplifier; WDM networks; WDM signals; amplifier saturated output power; bit error rate performance; gain-shifted dual-wavelength-pumped Tm-doped fiber amplifier; noise figure; optical preamplifier; optical preamplifier configuration; optical-to-optical conversion efficiency; wavelength region; wavelength-division-multiplexing signals; Doped fiber amplifiers; Noise figure; Optical fiber amplifiers; Optical modulation; Optical saturation; Power amplifiers; Preamplifiers; Semiconductor optical amplifiers; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
