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Optical transparent 4×4 switching node for frequency multiplexed signals

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Abstract

Optical frequency-division multiplex (OFDM) techniques in transparent networks offer a maximum of flexibility for future optical broadband communications.1 Figure 1 shows a scheme of a transparent switching node. The input fibers are guiding a frequency multiplex of modulated optical carriers, which are routed all-optically with respect to space and frequency2 to the output fibers.

© 1992 Optical Society of America

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