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Silicon photonics (SiPh) has been identified as a prime technology targeting cost-effective short-range optical links [1]. Wavelength-division multiplexing (WDM) is an attractive approach for enabling high aggregate transceiver bandwidth without increasing the number of optical fibers used in the link. Ring-based optical modulators and wavelength-selective filters are attractive devices for scalable...
We demonstrate a robust, compact and low-loss four-channel wavelength-division multiplexing (WDM) filter based on cascaded double-ring resonators (2RR) in silicon. The flat-top channel response obtained by the second-order filter design is exploited to compensate for the detrimental effects of local fabrication variations and their associated phase errors on the ring-based filter response. Full wafer-scale...
We demonstrate a robust 4-channel WDM demultiplexing filter based on cascaded silicon microring resonators. A comparison is made between first- and second-order filters regarding the robustness of the filter response to wafer-scale fabrication variations.
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