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We experimentally demonstrate tunable silicon comb filters based on Fabry-Perot resonators composed of Sagnac loop mirrors using periodically-interleaved PN junctions. Forward and reverse biases blue- and red-shift the comb lines, respectively.
We present a reflective-type delay line using side-coupled integrated spaced sequence of resonators (SCISSOR) terminated with a Sagnac loop reflector. With 13 microrings, group delay of ∼150 ps is achieved with 170 GHz bandwidth.
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