intensity dependent phenomena in optical guided waves
have attracted a great deal of interest in the recent past
because of their potential use in nonlinear optical devices
like optical switches, nonlinear directional couplers, etc., these
devices are needed for all optical processing [1]–[3]. Optical
fiber is one of the most promising nonlinear media
because of its high power density and long interaction length.
Ultrafast all optical switching with power of 14 W was demonstrated
in 48 cm long single mode fiber