Ultrafast all-optical ADD-DROP multiplexer based on 1-m-long bismuth oxide-based highly nonlinear fiber

An all-optical ADD- DROP multiplexer able to carry out ultrafast channel extraction, clearing, and insertion operations for time-interleaved optical signals is presented. The proposed ADD-DROP multiplexer exploits polarization rotation induced by cross-phase modulation in 1-m-long highly nonlinear bismuth oxide-based optical fiber with a nonlinear coefficient of 1250 W/sup -1/ /spl middot/ km/sup -1/. Penalties lower than 1.5 dB in a 4 /spl times/ 10 Gb/s optical-time-division-multiplexed system have been measured for all operations.