[5] MASSEY G A,SIEGMAN A E.Reflection and refraction of Gaussian light beams at tilted ellipsoidal surfaces[J].Appl Opt,1969,8(5):975-978.

[6] GANGOPADHYAY S,SARKAR S N.Laser diode to single mode fibre excitation via hyperbolic lens on the fibre tip:formulation of ABCD matrix and efficiency computation[J].Opt Commun,1996,132(1):55-60.

[7] GANGOPADHYAY S,SARKAR S.ABCD matrix for reflection and refraction of Gaussian light beams at surfaces of hyperboloid of revolution and efficiency computation for laser diode to single-mode fiber coupling by way of a hyperbolic lens on the fiber tip[J].Appl Opt,1997,36(33):8582-8586.

[8] RAHMAN F A,TAKAHASHI K,TEIK C H.Theoretical analysis of coupling between laser diodes and concially lensed single-mode fibers utilising ABCD matrix method[J].Opt Commun,2003,215(1):61-67.

[9] SiEGMAN A E.ABCD-matrix elements for a curved diffraction grating[J].J O S A,1986,3(6):889.

[10] ZENG Xiao-dong,AN Yu-ying.Coupling light from a laser diode into a multimode fiber[J].Appl Opt,2003,42 (22):4427-4430.