J. Mangeney et al., All-optical discrimination at 1.5 mu m using ultrafast saturable absorber vertical cavity device, ELECTR LETT, 36(17), 2000, pp. 1486-1488
All-optical power discrimination at lambda = 1.5 mu m is demonstrated for r
epetition frequencies > 10GHz by using a saturable absorber vertical cavity
device, Measurements on modulated signals reveal a modulation contrast enh
ancement by a factor of four after reflection on the device. The ultrafast
absorber response is obtained by heavy-ion irradiation of the absorbing lay
ers. Frequency performances beyond 100GHz can be further foreseen with this
technique.