Abstract

Ultrafast highly stable all-optical logic operations, including inversion, and, xor, and XOR¯, in a two-wavelength nonlinear Sagnac interferometer with two control beams have been reported. The interferometer consists of a dichroic polarization-maintaining fiber coupler and a 200-m-long dispersion-shifted polarization-maintaining fiber Sagnac loop. The logic operations were successfully demonstrated at multigigabit operation per second, and the required signal power was 1.8 W for a 200-m fiber.

© 1991 Optical Society of America

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