Showing papers by "St. Petersburg State University of Telecommunications published in 2002"
01 Nov 2002
TL;DR: In this article, a double time-multiplexed interferometer based on Faraday mirrors was proposed for two quantum cryptography channels, one for 1km + 1km telecom optical fibers and the other for 2km + 2km optical fibers.
Abstract: We present a double time-multiplexed interferometer based on Faraday mirrors, which can be used for two quantum cryptography channels. Two channel operation with "star" configuration, 1km + 1km telecom optical fibers, was demonstrated. Experiments show a fringe visibility of 0.96 for both channels. Crosstalk attenuation more than 70dB was observed.