Title :
A high gain, high output saturation power Pr/sup 3+/-doped fluoride fiber amplifier operating at 1.3 mu m
Author :
Ohishi, Yasutake ; Kanamori, Terutoshi ; Nishi, Toshihiro ; Takahashi, Shiro
Author_Institution :
NTT Opto-electron., Ibaraki, Japan
Abstract :
A high net gain of 30.1 dB at 1.309 mu m and an output saturation of 13 dBm are obtained using a Pr/sup 3+/-doped fluoride fiber amplifier pumped at 1.017 mu m. The critical Pr/sup 3+/ concentration at which concentration quenching begins to occur was obtained by fluorescence lifetime measurement. The Pr/sup 3+/ concentration should be less than 1000 ppm to suppress the concentration quenching by cross relaxation. A high signal output power of 17.8 dBm was extracted from the Pr/sup 3+/-doped fluoride fiber. The Pr/sup 3+/-doped fluoride amplifier shows good potential for use in 13. mu m telecommunication systems.<>
Keywords :
fibre lasers; fluorescence; laser transitions; luminescence of inorganic solids; optical communication equipment; optical saturation; praseodymium; radiation quenching; radiative lifetimes; 1.017 micron; 1.309 micron; 30.1 dB; Pr/sup 3+/-doped fluoride fiber amplifier; ZrF/sub 4/-BaF/sub 2/-LaF/sub 3/-AlF/sub 3/-LiF-NaF:Pr/sup 3+/; concentration quenching; cross relaxation; fluorescence lifetime; high gain; high output saturation power; high signal output power; output saturation; telecommunication systems; Doped fiber amplifiers; Fluorescence; Glass; High power amplifiers; Laser excitation; Optical fiber amplifiers; Optical fiber couplers; Optical pumping; Optical saturation; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
