Title :
Transient gain behavior in 1050/1550-nm dual-wavelength pumped TDFAs
Author :
Lüthi, Stefan R. ; Carvalho, Mariana T. ; Gomes, Anderson S L
Author_Institution :
Dept. de Fisica, Univ. Fed. de Pernambuco, Recife, Brazil
fDate :
5/1/2005 12:00:00 AM
Abstract :
We present an experimental study on transient events in 1050/1550-nm dual-wavelength pumped thulium-doped fiber amplifiers (TDFAs)-a promising candidate for S-band telecommunication applications. For appropriate power ratios of the two pump wavelengths, transient excursions due to signal add-drop are comparable to those in single-wavelength pumped TDFAs. Pump modulation effects, however, more severely impact the signal gain. With our experimental results, it should be possible to develop transient gain suppression control loops for this TDFA type.
Keywords :
optical communication equipment; optical control; optical fibre amplifiers; optical modulation; optical pumping; thulium; 1050 nm; 1550 nm; 5-band telecommunication applications; dual-wavelength pumped TDFA; pump modulation effects; pump wavelengths; signal add-drop; thulium-doped fiber amplifier; transient excursions; transient gain behavior; transient gain suppression control loops; Band pass filters; Choppers; Communication system control; Erbium-doped fiber amplifier; Optical control; Optical fiber amplifiers; Optical fiber communication; Telecommunication control; Transient response; Tunable circuits and devices; Optical communication; optical fiber amplifier; pump modulation; signal add–drop; thulium-doped fiber amplifier (TDFA); transient response;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.845726
