[1] Rojers A. J. Electron. Lett., 1980, 16: 489.

[2] Dakin J P, Pratt D J, Bibby G W. Electron. Lett., 1985, (21): 569.

[3] Rogers A. J. Physics Reports, 1988, 169(2): 99.

[10] Lees G P, Leach A P, Hartog A H, et al. Electronics Letters, 1996, 32(19): 1809.

[13] Marcelo A Soto, Gabriele Bolognini, Fabrizio Di Pasquale, et al. Optics Letters, 2007, 35(2): 259.