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Published April 10, 2001 | public
Journal Article Open

Advanced all-optical logic gates on a spectral bus


We present experimental results on a new method for ultrafast all-optical logic, which utilizes four-wave mixing on polarization-modulated signals. The technique allows advanced operations such as exclusive-or and three-bit addition with carry bit. Furthermore, we show that on-the-fly error-correction encoding and decoding of a simple Hamming code is achieved when these gates are used on the bits of a spectrally structured word. These gates may be suitable for logic operations in an optoelectronic front end, which moves some of the necessary computation of data to the optical domain, before detection.

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© 2001 Optical Society of America. Received 7 December 1999; revised manuscript received 5 December 2000. This research is supported by the Ballistic Missile Defense Organization and the Air Force Office of Scientific Research AFOSR grants F49620-97-1-0512 and F49620-98-1-0409. P.O. Hedekvist is supported by the Swedish Foundation for International Cooperation in Research and Higher Education (STINT).


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