[1] GOLDBERG L,COLE B,SNITZER E.V-groove side-pumped 1.5μm fibre amplifier[J].Electron Lett,1997,33(25):2127-2129.
[2] KOPLOW J P,MOORE S W,KLINER D A V.A new method for side pumping of double-clad fiber sources[J].IEEE J Q E,2003,39(4):529-540.
[3] OU P,YAN P,GONG M L,et al.Multi-coupler side-pumped Yb-doped double-clad fiber laser[J].Chinese Optics Letters,2004,2(5):285-287.
[4] YAN P,GONG M L,LI Ch,et al.Distributed pumping multifiberseries fiber laser[J].Optics Express,2005,13(7):2699-2706.
[5] OU P,YAN P,GONG M L,et al.Optimum design on three-position-pumped high-power double-clad fiber laser[J].Laser Technology,2007,31(1):57-60(in Chinese).
[6] WEI W L,OU P,YAN P,et al.Side-pumping coupler technology for double-clad fiber[J].Laser Technology,2004,28(4):116-121(in Chinese).
[7] XU J Q,LU J H,KUMAR G,et al.A non-fused fiber coupler for side-pumping of double-clad fiber lasers[J].Opt Commun,2003,220:389-395.
[8] OU P,YAN P,GONG M L,et al.Studies of pump light leakage out of couplers for multi-coupler side-pumped Yb-doped double-clad fiber lasers[J].Opt Commun,2004,239:421-428.
[9] OU P,YAN P,GONG M L,et al.Coupling efficiency of angle-polished method for side-pumping technology[J].Opt Engng,2004,43(4):816-821.
[10] FUJITA H,SUZAKI Y,TACHIBANA A.Optical fiber splicing technique with a CO2 laser[J].Appl Opt,1976,15(2):320-321.
[11] EGASHIRA K,KOBAYASHI M.Optical fiber splicing with a low-power CO2 laser[J].Appl Opt,1977,16(6):1636-1638.