Title :
L-band erbium-doped fiber amplifier incorporating an inline fiber grating laser
Author :
Yamashita, Shinji ; Nishihara, Masato
Author_Institution :
Dept. of Frontier Inf., Tokyo Univ., Japan
Abstract :
Wide-band erbium-doped fiber amplifiers (EDFAs) having an inherently flat gain spectrum in the long-wavelength-band (L-band) between 1570 nm and 1600 nm have recently been realized. The L-band amplification has been achieved by simply using a longer length of EDF than in the conventional-wavelength-band (C-band) EDFAs. In the paper, we investigate the improvement of the gain flatness in an L-band EDFA co-pumped with the high-power pump light at 1.48 μm and the medium-power auxiliary pump light at 1.55-1.565 μm. We also propose a novel L-band EDFA incorporating an inline fiber grating laser (FGL) operating at the auxiliary pump wavelength, and demonstrate that the proposed EDFA has better gain flatness as well as the gain clamping characteristics
Keywords :
diffraction gratings; erbium; fibre lasers; laser beams; laser noise; optical fibre amplifiers; optical pumping; 1.48 mum; 1.55 to 1.565 mum; 1570 to 1600 nm; L-band; L-band EDFA; L-band Er-doped fiber amplifier; L-band amplification; auxiliary pump wavelength; co-pumped laser; conventional-wavelength-band EDFAs; gain clamping characteristics; gain flatness; high-power pump light; inherently flat gain spectrum; inline fiber grating laser; long-wavelength-band; medium-power auxiliary pump light; wide-band Er-doped fiber amplifiers; Clamps; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Fiber gratings; L-band; Optical devices; Optical noise; Optical pumping; Optical saturation; Pump lasers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.924008
