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Two device geometries that enable structural coexistence are micro-mechanical and optical resonators. In one geometry, a micro-cantilever mechanical resonator also functions as a mirror in a high-finesse optical cavity. In a second, opto-mechanical coexistence takes the form of a micron-scale silica toroid that exhibits both high-Q radio-frequency mechanical resonances and optical resonances.
A novel refractometric sensor based on an embedded optical microfiber loop resonator is presented. The device sensitivity has been studied in two typical configurations and its dependence on the nanowire diameter and coating thickness determined.
We experimentally demonstrated a novel refractometric sensor based on a coated optical microfiber coil resonator which is robust, compact, and comprises an intrinsic fluidic channel. The measured sensitivity has an excellent agreement with theoretical predictions.
We propose two-dimensional nonblocking low-power photonic switch nodes for networks-on-chip using multimode-interference-based waveguide crossing-coupled microring electro-optic switch array in silicon-on-insulator.
We present the first demonstration of ultra-low power four-wave-mixing in a high-index glass micro-ring resonator (47.5 mum radius). By using a mW-level CW pump power we obtained an appreciable wavelength conversion in the C-band.
We demonstrate on-chip absorption spectroscopy using silicon microring resonators with integrated microfluidic channels. Using a 40 mum radius resonator with Q>15,000 we show absorption spectra of less than 90 nL volumes of water and methanol from 1460 nm-1560 nm.
The Q-factor of a localized plasmon cavity is enhanced significantly when allowing the plasmon to very slightly propagate as an SPP. The resulting mixed plasmon - plasmon polariton resonators retain sub-100 nm volume with enhanced Q-factors.
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.
Device induced data timing skew in optical interconnects is investigated. Up to 28 ps timing skew is induced by ring-resonator cavity Q variation in 10 Gb/s NRZ on-chip scenario, which may lead to 6 dB signal eye opening penalty.
We demonstrate a robust double-capillary microfluidic ring resonator optical sensor imbedded into a solid polymer matrix. The device is capable of compensating the temperature and pressure variations and can be generalized to a multi-capillary lab-on-a-chip.
We demonstrate microring resonators on silicon-on-insulator with bandwidth tunable from 0.1 nm to 0.7 nm, an extinction ratio of 23 dB and a footprint of less than 0.001 mm2 using interferometric couplers and thermal tuning.
We report on high quality electrically driven quantum dot micropillar cavities with Q-factors up to 16.000. The high Q-factors allow the observation of pronounced single dot resonance effects with a Purcell enhancement of about 10.
We present a detailed understanding of mechanical dissipation in toroidal microresonators enabling the design of novel structures that combine ultra-high optical Q(>108) and mechanical Q exceeding 50psila000 at frequencies above 20 MHz at room temperature.
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