We demonstrate 40-Gbit/s all-optical bitwise inversion and wavelength
conversion, using an ultrafast nonlinear interferometer. This device u
ses Optically induced gain and index nonlinearities in a semiconductor
amplifier to achieve the high-rate switching. The device is cascadabl
e and can be configured to perform a variety of switching functions. A
s an example, 10-Gbit/s results of OR and NOR gating are presented. (C
) 1996 Optical Society of America