Title :
Gain characteristics of Pr/sup 3+/-Yb/sup 3+/ codoped fluoride fiber for 1.3 mu m amplification
Author :
Ohishi, Yasutake ; Kanamori, Terutoshi ; Nishi, Toshihiro ; Takahashi, Shiro ; Snitzer, Elias
Author_Institution :
NTT Corp., Ibaraki, Japan
Abstract :
The authors report on the ability of the Pr/sup 3+/-Yb/sup 3+/ codoped system to move the pumping wavelength to wavelengths shorter than 1.017 mu m. It was demonstrated that, by codoping of Yb/sup 3+/ with Pr/sup 3+/-doped fluoride fiber, amplifiers can be moved to the spectral range where effective pumping can be done with InGaAs laser diodes that have strained-layer quantum-well structures that were developed as a pumping source for Er/sup 3+/-doped fiber amplifiers. The pumping wavelength range was extended down to 0.93 mu m.<>
Keywords :
aluminium compounds; barium compounds; fibre lasers; lanthanum compounds; lithium compounds; optical pumping; praseodymium; sodium compounds; ytterbium; yttrium compounds; zirconium compounds; 0.93 micron; 1.017 micron; 1.3 micron; InGaAs laser diodes; Pr/sup 3+/-Yb/sup 3+/ codoped fluoride fiber; ZrF/sub 4/-BaF/sub 2/-LaF/sub 3/-AlF/sub 3/-NaF-LiF:Pr/sup 3+/,Yb/sup 3+/; amplifiers; effective pumping; pumping source; pumping wavelength; spectral range; strained-layer quantum-well structures; Absorption; Energy exchange; Fluorescence; Glass; Laser excitation; Optical fiber amplifiers; Optical pumping; Performance gain; Power amplifiers; Power generation;
Journal_Title :
Photonics Technology Letters, IEEE
