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Arbitrary power splitting ratio is obtained by an 1-to-2 asymmetric multimode interference splitter. The dimension of the multimode section is less than 1.5μm × 3цm while the excess loss is lower than 0.15 dB.
We proposed and experimentally demonstrated a single ring interferometer configuration that produces doubled free-spectral range (FSR) by in-phase combining light from the pass-through port and drop port of the resonator. It exhibits higher extinction ratio than conventional single ring resonators, brings no additional stress to fabrication, works for both polarizations, and does not require any particular...
The coupled microring resonators interference is discussed and applied to intensity sensing. Relaxed from the requirement of high quality factor, better performance of the coupled MR intensity sensor compared with conventional MR sensor is demonstrated by the transfer matrix theory.
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