[1] Knight J C, Arriaga J, Birks T A et al 2000 IEEE Photon.
Technol. Lett. 12 807

[2] Gander M J, McBride R, Jones J D C et al 1999 Electron. Lett.
35 63

[3] Ferrando A, Silvestre E, Miret J J et al 2000 Opt. Lett.
25 790

[4] Ferrando A, Silvestre E and Andres P 2001 Opt. Exp.
9 687

[5] Saitoh K and Koshiba M 2003 Opt. Exp. 11 843

[6] Poli F, Cucinotta A, Selleri S et al 2004 IEEE Photon.
Technol. Lett. 16 1065

[7] Wu T L and Chao C H 2005 J. Lightw. Technol. 23 2055

[8] Chen M Y, Yu R J and Zhao A P 2005 J. Lightw. Technol.
23 2707

[9] Steel M J and Osgood R M 2001 Opt. Lett. 26 229

[10] Steel M J, and Osgood R M 2001 J. Lightw. Technol. 19
495

[11] Wu T L and Chao C H 2004 IEEE Photon. Technol. Lett.
16 126

[12] Florous N J and Koshiba M 2005 J. Lightw. Technol.
23 1763

[13] Saitoh K and Koshiba M 2002 IEEE J. Quantum Electron.
38 927

[14] Li S G, Liu X D, Zhou G Y et al 2005 Chin. Phys. Lett.
22 2855

[15] Zhang C S, Kai G Y, Wang Z et al 2005 Chin. Phys. Lett.
22 2858

[16] Liu Y C and Lai Y 2005 Opt. Exp. 13 225

[17] Wang J, Lei N G and Yu C X 2007 Acta Phys. Sin.
56 946

[18] Selleri S, Vincetti L, Cucinotta A et al 2001 Opt. Quantum
Electron. 33 359

[19] Ferrarini D, Vincetti L, Zoboli M et al 2002 Opt. Exp.
10 1314

[20] Obayya S S A, Rahman B M A and Grattan K T V 2005 IEE Proc.
Optoelectron. 152 241

[21]Agrawal G P 2001 Nonlinear Fibre Optics 3rd edn (New York:
Academic)

[22] Falkenstein P, Merritt C D and Justus B L 2004 Opt. Lett.
29 1858