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This paper proposes a Butterworth-type spectral model of optical scintillation to design a terrestrial free-space optical (FSO) link. It enables us to estimate the power spectral density (PSD) of optical scintillation in a current optical wireless channel when time zone and weather parameters, such as temperature and rainfall intensity, are given. Furthermore, we present the estimated scintillation...
We propose a polarization-independent silicon wire-waveguide directional coupler optical switch (DC-OS) by adjusting the propagation constant difference between the guided modes. The thermo-optic (TO) switching power consumption is as low as 18.5mW. This polarization-independent DC-OS is expected to be valuable for optical interconnection in silicon photonics.
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