Abstract
The principles of the formation of dual- and three-frequency symmetric and/or asymmetric radiation in the optical range for the construction of optical vector spectrum analyzers are presented. The scanning radiation is formed by modulating single-frequency tunable radiation on dual-port Mach–Zehnder modulators to scan both dual-frequency and three-frequency signals. These research results make it possible to design vector network analyzers to study the spectral features of passive optical elements and devices in a supernarrow spectral region.
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