Title :
980 nm band pumped Er3+-doped tellurite-based fibre amplifier with low-noise figure of less than 4.5 dB
Author :
Mori, A. ; Ono, H. ; Shikano, K. ; Shimizu, M.
Author_Institution :
NTT Photonics Labs., Nippon Telegraph & Telephone Corp., Ibaraki, Japan
fDate :
11/7/2002 12:00:00 AM
Abstract :
The amplification characteristics of an Er3+-doped tellurite-based fibre amplifier (EDTFA) with 980 nm band pumping are described. The optimum pump wavelength and length of the newly developed EDTF are investigated in order to obtain both a low noise figure and a high gain simultaneously. We realise a low noise figure of less than 4.5 dB with a pump wavelength of 976.5 nm and a 0.4 m EDTF.
Keywords :
erbium; laser noise; optical fibre amplifiers; optical pumping; 0.4 m; 4.5 dB; 976.5 nm; 980 nm; 980 nm band pumping; EDTFA; Er3+-doped tellurite-based fibre amplifier; amplification characteristics; high gain; low noise figure; optimum length; optimum pump wavelength;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20021014
