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We demonstrate a very simple technique to fabricate robust micro bottle resonators. Spheroidal WGMs and bottle modes were excited preferentially using a tapered fiber coupled at specific locations along the bottle, and characteristic resonance spectra obtained.
A simple chemical method for reducing free-carrier lifetime in silicon photonics while maintaining low optical loss is presented. Lifetimes of ~ 300 ps for optical losses of ~ 0.4 cm-1 are achieved. Ramifications for nonlinear optics are discussed.
We demonstrate the tuning of an on chip Micro Ring Resonator (MRR) using water based droplet driven by electro-wetting. The results show that opto-fluidic devices can be controlled by electrical signal.
We demonstrate GHz-speed electro-optic modulation using microring resonators in a deposited layer of polycrystalline silicon. Active optical devices in a deposited microelectronic material can enable monolithic large-scale integration of photonic networks on a microelectronic chip.
We demonstrate a silicon-on-insulator microring resonator with a free-spectral-range of 0.32 nm, an extinction ratio of 27 dB, and a quality factor of ~140900 at 1550 nm that is used for pulse repetition-rate multiplication from 10 to 40 GHz.
We demonstrate strong coupling between two stacked micro-optomechanical silicon nitride disks. The induced frequency splitting almost spans a full free-spectral range. Mechanical oscillations excited by repulsive/attractive gradient forces modulate the coupling modulation at several MHz.
We demonstrate, for the first time, independent control over mechanical and optical properties within single chip-scale optomechanical resonators. The direct observation of micromechanical normal-mode splitting enables combining ultra-high optical finesse with material-loss limited mechanical Q-factors.
We investigate the optomechanical properties of a high-Q CaF2 whispering gallery mode resonator. Mechanical modes with quality factors up to 135,000 are observed, optically probed and compared to simulation.
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