[1] [1] Gambling W A,Matsumura H,Ragdale C M.Curvature and microbending losses in single-mode optical fibers.Optical and Quantum Electronics,1979,11(1):43～59

[2] [2] Deus A L,Sunak R D.Design consideration for minimization macrobending loss in erbium-doped fiber amplifiers.IEEE Photonics Techonology Letters,1991,3(1): 50～52

[3] [3] Saijonmaa J.Beam-propagation analysis of loss in bent optical waveguides and fibers.J Opt Soc Am, 1983,l73(12):1785～1791

[4] [4] Ohashi M,Shiraki K.Bending loss effect on signal gain in an Er3+-doped fiber amplifier.IEEE Photonics Techonology Letters,1992,4(2):192～194

[5] [5] Lazaro J A,Rebolledo M A.Numerical simulation of bending effects in erbium-doped fiber amplifiers.Pure Appl Opt,1996,5(1):293～300

[6] [6] Miyazaki T,Inagaki K,Karasawa Y,et al.Nd-doped double-clad fiber amplifier at 1.064 μm.Journal of Lightwave Techonology,1998,16(4):562～566

[7] [7] Miyazaki T,Inagaki K,Karasawa Y,et al.A high power Nd-doped double-clad fiber amplifier at 1.06 μm.SPIE,1996,2699:254～265

[8] [8] Rochat E.High Power optical fiber amplifiers for coherent inter-satellite communication[Doctor thesis]. Universite de Neuchatel Institut de Microtechnique, 2000.1～113

[9] [9] Griebner U,Koch R,Schonnagel H.Efficient laser operation with nearly diffraction-limited output from a diode-pumped heavily Nd-doped multimode fiber.Optics Letters,1996,21(4):266～268

[10] [10] Teodoro F D,Koplow J P,Moore S.Diffraction-limited, 300-kW peak-power pulses from a coiled multimode fiber amplifiers.Optics Letters,2002,27(7):518～520

[11] [11] Hirano Y,Shoji Y.Double clad Nd-doped fiber amplifiers for transmitter of Inter-orbit communications.SPIE,2990:232～237

[13] [13] Zellmer H,Tunnermann A,Welling H.Fiber lasers-compact laser light sources for the near infrared spectral range.Laser and Optoelektronik,1997,29(4):53～59