[1] Segev M,Crosignani B,Yariv A et al.Phys Rev Lett,1992;68:923
[2] Duree G C,Shultz J L Jr et al.Phys Rev Lett,1993;71:533
[3] Morin M,Duree G,Salamo G et al.Opt Lett,1995;20:2066
[4] Shih M F,Segev M,Valley G C et al.Electron Lett,1995;31:826
[5] Chen Zh G,Mitchell M,Shih M F et al.Opt Lett,1996;21:629
[6] Montemezzani C,Gunter P.Opt Lett,1997;22:451
[7] Segev M,Valley G C,Crosignani B et al.Phys Rev Lett,1994;73:3211
[8] Christodoulides D N,Carvalho M I.J O S A,1994;B12:1628
[9] Valley G C,Segev M,Crosignani B et al.Phys Rev (A),1994;50:R4457
[10] Segev M,Valley G C et al.J O S A,1997;B14:1772
[11] Taya M,Bashaw M C,Fejer M M et al.Phys Rev ,1995;A52:3095
[12] Feinberg J.J O S A,1982;72:46
[13] Carvalho M I,Singh S R,Christodoulides D N.Opt Commun,1995;120:311
[14] Gunter P,Huignard J P eds.Photorefractive Materials and Their Applications Ⅱ.Berlin:Springer-Verlag,1988;P Yeh.Photorefractive Nonlinear Optics.New Youk:Wiley,1993
[15] Vinetskii V L,Kukhtarev N.Sov Phys,1975;16:2414
[16] Kodama Y,Hasegawa A.IEEE J Q E,1987;23:510
[17] Blow K J,Doran N J,Wood D.J O S A,1988;B5:1301