Title :
20 dB gain at 1.55 mu m wavelength in 50 cm long Er3+-doped fluoride fibre amplifier
Author :
Miyajima, Y. ; Sugawa, Tomoki ; Komukai, Tetsuro
Author_Institution :
NTT Transmission Syst. Labs., Ibaraki, Japan
Abstract :
A 20 dB gain is observed at 1.55 mu m in a 50 cm long fluoride fibre containing 5000 p.p.m. Er3+-ion in a core. A launched pump power of 57 mW was obtained using a 1.48 mu m laser diode. Gain difference in the 1535-1563 nm wavelength region is less than 1 dB.
Keywords :
europium; optical communication equipment; optical fibres; solid lasers; 1.48 micron; 1.55 micron; 1535 to 1563 micron; 20 dB; 50 cm; 57 mW; Er 3+-doped fluoride fibre amplifier; ZrF 4-BaF 2-LaF 3-AlF 3-NaF:Er; gain difference; laser diode; launched pump power;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900980
