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17 April 2020 Widely tunable optical filters based on silicon microring resonators
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We demonstrate a bandwidth and wavelength adjustable optical filter based on cascaded four opto-mechanical microring resonators (MRRs). By injecting pump power into each opto-mechanical MRR, the resonance wavelength of the MRRs is redshifted. The bandwidth tuning range of the filter is from 0.03 nm to 0.32 nm and the tuning efficiency is 0.051 nm/mW. The wavelength is tuned from 0.1 nm to 0.4 nm, and the tuning efficiency is 0.028 nm/mW. The filter is tuned with low pump power, which is benefit for the optical signal processing in optical networks.
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Ying He, Li Liu, and Xing Jin "Widely tunable optical filters based on silicon microring resonators", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 114556F (17 April 2020);

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