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  • Title: Bandwidth and wavelength-tunable optical bandpass filter based on silicon microring-MZI structure.
    Author: Ding Y, Pu M, Liu L, Xu J, Peucheret C, Zhang X, Huang D, Ou H.
    Journal: Opt Express; 2011 Mar 28; 19(7):6462-70. PubMed ID: 21451674.
    Abstract:
    A novel and simple bandwidth and wavelength-tunable optical bandpass filter based on silicon microrings in a Mach-Zehnder interferometer (MZI) structure is proposed and demonstrated. In this filter design, the drop transmissions of two microring resonators are combined to provide the desired tunability. A detailed analysis and the design of the device are presented. The shape factor and extinction ratio of the filter are optimized by thermally controlling the phase difference between the two arms of the MZI. Simultaneous bandwidth and wavelength tunability with in-band ripple control is demonstrated by thermally tuning the resonance offset between the two microring resonators.
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