Tunable Filters with Extended Tunability

概要

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Filters with extended tunability using waveguide devices are proposed. The first and second types of filters are combinations of a filter with a wide tuning range and a filter with narrow passbands. The first type is composed of cascaded filters and the second type is the filter with a wide tuning range embedded in a resonator. The last type of filter uses the Vernier effect which has seldom been applied to nonresonant-type devices. The tunability of these filters can overcome the limitation set by the electrooptic property of the material. The performance of the fabricated multibranch Mach-Zehnder interferometric filter, which is the key component for implementing the proposed filter configuration, is demonstrated.
社団法人応用物理学会の論文
1992-05-30