[1] Glas P,Naumann M,Schirrmacher A,et al.A high power neodymium-doped fiber laser using a novel fiber geometry.Opt Communications, 1997,141(9):336～342

[2] Dominic V,Maccormack S,Waarts R,et al.110 W fiber laser.Electron Lett, 1999,35(14):1158～1160

[3] Gapontesv V. Fiber lasers grow in power.Laser Focus World, 2002,38(8):83～87

[4] Kurkov A S,LaptevA Y,Dianov E M,et al. Yb3+-doped double-clad fibers and lasers.Proceeding of SPIE, 2000,4083:160～169

[5] Bennion I,Williams J A R,Zhang L,et al. UV-written in-fiber Bragg gratings.Optical and Quantum Electronics,1996,28(2):93～135

[6] Lu F,Fan Y,Hu S,et al. Output characteristics of high power double-clad fiber laser.Proceeding of SPIE, 2002,4914:349～352

[7] Paschotta R,Nilsson J, Tropper A C,et al.Ytterbium-doped fiber amplifiers. IEEE J Quantum Electronics, 1997,33(7):1049～1056