Title :
Gain efficiency of PbF2/InF3-based praseodymium-doped fluoride optical fibres for 1.3 μm optical fibre amplifiers
Author :
Shimada, Toshikazu ; Nishida, Yoshiharu ; Kobayashi, Kaoru ; Kanamori, Toshiyuki ; Oikawa, K. ; Yamada, Makoto ; Ohishi, Yasutake
Author_Institution :
NTT Opto-Electron. Labs., Ibaraki
fDate :
11/6/1997 12:00:00 AM
Abstract :
The authors have developed praseodymium (Pr3+)-doped PbF2/InF3-based fluoride optical fibres (PDFs) with relative refractive index differences (Δn) of 2.5, 3.7 and 4.6% for use as high efficiency optical fibre amplifiers. The small signal gain coefficients of the above fibres were 0.18, 0.26 and 0.30 dB/mW. These values are higher than those of ZrF4-based PDFs
Keywords :
fluoride glasses; 1.3 micrometre; PIGZYL; PbF2-InF3-GaF3-ZnF2-LaF3-YF3:Pr; fluoride optical fibres; gain efficiency; optical fibre amplifiers; relative refractive index differences; small signal gain coefficients;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19971314
