Title :
Yb3+ sensitised Er3+ doped silica optical fibre with ultrahigh transfer efficiency and gain
Author :
Townsend, J.E. ; Barnes, W.L. ; Jedrzejewski, K.P. ; Grubb, S.G.
Author_Institution :
Optoelectron. Res. Centre, Southampton Univ., UK
Abstract :
Efficient 1.54 mu m emission under 1064 nm excitation of Er3+/Yb3+ codoped silica fibre is reported. The energy transfer efficiency from Yb3+ to Er3+, approximately 95%, even under high inversion, is comparable to that in multicomponent glass fibres. The small signal gain of approximately 45 dB is measured and power amplifies with 145 mW output power demonstrated.
Keywords :
erbium; fibre lasers; optical pumping; silicon compounds; ytterbium; 1.064 micron; 1.54 micron; 145 mW; 45 dB; 95 percent; SiO 2:Er 3+,Yb 3+; energy transfer efficiency; fibre amplifiers; high inversion; power amplifies; signal gain; ultrahigh transfer efficiency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911214
