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We demonstrate critically coupled silicon microring resonators with intrinsic Q close to 300,000 and mode volume Vap20times(lambda/ne)3. For sub-mW optical power, large pump induced resonance shifts were observed for applications in all-optical switching.
We demonstrate a bowtie geometry in a silicon planar resonator with an ultra-small modal volume .01(lambda/2n)3. Bowtie, ring resonators and 1D and 2D photonic crystal resonators are compared for tradeoffs in confinement and quality factors.
We demonstrate superluminal pulse propagation on a silicon chip using an all -optical analog to electromagnetically induced absorption created by the coherent interaction between two micro-resonators. We show group indices tunable between -1158 and -312.
We fabricate horizontal slot waveguides and resonators using layers of polycrystalline and single crystalline silicon. We demonstrate waveguide propagation losses of 7.3 dB/cm and ring resonators with an intrinsic quality factor of 76,000.
We show cascaded silicon microring resonators with 1.5-mum radius critically coupled to a narrower waveguide. A coupled Q of 9,000 is achieved. Devices are fabricated with the widely-available SEM-based lithography system using a stitching-free design.
We demonstrate ultra fast tuning of the optical quality factor of a resonator on a silicon chip using electro-optic tuning. We tune the cavity quality factor from 20,000 to 6,000 in 100 ps.
We theoretically and experimentally demonstrate a compact silicon photonic crystal microcavity sensor capable of detecting in vivo a single particle of size comparable to a virus.
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