Title :
Gain-clamped thulium-doped fibre amplifier with single pump at 1050 nm
Author :
Yam, S.S.-H. ; Akasaka, Y. ; Marhic, M.E. ; Kazovsky, L.G.
Author_Institution :
Photonics & Networking Res. Lab., Stanford Univ., CA, USA
Abstract :
The large homogeneous bandwidth of a thulium-doped fibre amplifier makes it suitable for optical gain clamping. This has been demonstrated experimentally. Gain variation of 1.2 dB for 15 dB input dynamic range has been achieved, with less than 1 dB gain ripple over 20 nm, and no noise figure degradation, while pumped at 1050 nm.
Keywords :
automatic gain control; laser feedback; laser noise; optical communication equipment; optical fibre amplifiers; optical saturable absorption; superradiance; thulium; 1050 nm; WDM optical communications; amplified spontaneous emission profiles; effective automatic gain control; fractional inversion; gain ripple; gain-clamped fibre amplifier; large homogeneous linewidth; large homogeneous saturation linewidth; lasing feedback signal; noise figure; optical gain clamping; optical gain control; small-signal gain red shift; thulium-doped fibre amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040020
