Abstract: We developed a precise and wide range ultraviolet (UV) trimming of the center wavelength of vertically coupled microring resonator, by using the direct UV irradiation to the SiN ring core.

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Abstract: A tunable polymer waveguide ring resonator is proposed and demonstrated for microwave photonic filtering. The ring resonator consists of a Mach-Zehnder interferometer (MZI) as the tunable ...