A Checkup On Health Care Markets

Looks at key attributes of the healthcare markets in fourteen communities in order to gain a better understanding of how to help communities drive and sustain high-quality health care for patients with chronic illnesses

Nonlinear absorption and dispersion in fiber coupled silicon photonic crystal microresonators

Two-photon absorption, free-carrier absorption and dispersion, and thermo-optic dispersion in high-Q, ultra-small mode volume, photonic crystal cavities are studied experimentally. Sub-nanosecond free-carrier lifetimes, and optical bistability at ∼ 100μW cavity input power are observed

Fabrication-tolerant high quality factor photonic crystal microcavities

A two-dimensional photonic crystal microcavity design supporting a wavelength-scale volume resonant mode with a calculated quality factor (Q) insensitive to deviations in the cavity geometry at the level of Q~2x10^4 is presented. The robustness of the cavity design is confirmed by optical fiber-based measurements of passive cavities fabricated in silicon. For microcavities operating in the lambda = 1500 nm wavelength band, quality factors between 1.3-4.0x10^4 are measured for significant variations in cavity geometry and for resonant mode normalized frequencies shifted by as much as 10% of the nominal value.Comment: 3 pages, 3 figure

Evanescent coupling from optical fiber tapers to photonic crystal waveguides and resonators

Using a coupled mode theory and finite-difference time-domain calculations nearly complete evanescent power transfer between a fiber taper and a photonic crystal defect waveguide which is ideal for probing high-Q cavities is predicted

Design of high-Q photonic crystal optical cavities through Fourier space methods

By describing radiation losses through a Fourier space picture of modal couplings, low loss photonic crystal cavities are designed using a group theory-based analysis and finite difference time domain calculations, resulting in predicted quality factors exceeding 10^5

Rotor systems research aircraft airplane configuration flight-test results

The rotor systems research aircraft (RSRA) has undergone ground and flight tests, primarily as a compound aircraft. The purpose was to train pilots and to check out and develop the design flight envelope. The preparation and flight test of the RSRA in the airplane, or fixed-wind, configuration are reviewed and the test results are discussed

Experimental demonstration of evanescent coupling from optical fibre tapers to photonic crystal waveguides

Experimental results demonstrating nearly complete mode-selective evanescent coupling to a photonic crystal waveguide from an optical fibre taper are presented. Codirectional coupling with 98% maximum power transfer to a photonic crystal waveguide of length 65 μm and with a coupling bandwidth of 20 nm is realised

Efficient input and output coupling between planar photonic crystal waveguides and fiber tapers

Highly efficient (>94%) contradirectional coupling into and out of a photonic crystal waveguide is measured using a fiber taper probe as both a source and a collector