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21 November 20073×3 coupler based dual microring resonators: a proposal, model, and analysis
In this paper, we propose new types of dual microring resonators coupled via 3×3 couplers. By employing the transfer
matrix method, a model for these four types is developed and analytical expressions for characterizing their
transmissions are derived. The first two types show a coupled-resonator-induced-transparency-like transmission
spectrum at the through port. The third type holds the same transmission spectrum, while the last type simultaneously
realizes a first-order and a second-order filters at two drop ports. The effects of coupling coefficients on their
transmission spectra are analyzed in more detail. These proposed types can be found applications in fields such as
sensors and filters.
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Xiaobei Zhang, Dexiu Huang, Xinliang Zhang, "3×3 coupler based dual microring resonators: a proposal, model, and analysis," Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 67811S (21 November 2007); https://doi.org/10.1117/12.743170