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We propose an integrated transmitter for deep space communications consisting of an indium phosphide photonic integrated circuit (PIC) frontend followed by an average-power-limited amplifier. The frontend PIC achieves a 28-dB extinction ratio for 16-ary pulse position modulation.
The use of Cu–Ag core–shell nanoparticles has been proposed as a Pb-free interconnect technology in which upon annealing, the Ag shell dewets the copper surface and forms Ag necks between Cu core particles at particle–particle contacts. Neck formation creates an electrically, thermally, and mechanically stable porous sintered network. To convert this concept into a viable manufacturing technology,...
We describe a new, analytic approximation to the airlight integral from scattering media whose density is modeled as a sum of Gaussians. The approximation supports real-time rendering of inhomogeneous media including their shadowing and scattering effects. For each Gaussian, this approximation samples the scattering integrand at the projection of its center along the view ray but models attenuation...
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