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Long-distance frequency-division interferometer for communication and quantum cryptography

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Abstract

We introduce and demonstrate experimentally a single-channel long-distance interferometer that utilizes frequency division of two optical waves by using acousto-optic devices at the transmitting and receiving nodes of the interferometer. This novel single-channel long-distance interferometer provides unity visibility of the interference and therefore is useful not only for remote sensing and optical communications but also for quantum cryptosystems applications.

© 1995 Optical Society of America

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