Search Results - Varun Raghunathan
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Path-Loss Optimized Indoor Laser-Based Visible Light Communication System for Variable Link Length Gigabit-Class Communication
Published 2020-01-01Get full textWe discuss an optical ray-tracing approach to minimizing path-loss in a variable link length indoor blue laser down-converted white light visible light communication (VLC) system. For a given link length, minimum path-loss is achieved by finding optimum positions of transmitter and receiver lenses r...
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Silicon Nitride based Medium Contrast Gratings for Doubly Resonant Fluorescence Enhancement
Published 2019-01-01Get full textWe present the design, fabrication, and experimental characterization of silicon nitride based medium-index contrast gratings on glass substrate for fluorescence enhancement in the yellow to red spectral range with resonances for both incident excitation and fluorescence emission wavelengths under s...
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Comparative Study of ASE-ASE and ASE-Laser Based Quantum Random Number Generators
Published 2024-01-01Get full textQuantum random number generators (QRNG) based on amplified spontaneous emission (ASE) are known to achieve multi-gigabit-per-second rates through high-speed sampling of intensity and phase fluctuations. Two popular implementations of these QRNGs are based on balanced detection of ASE-ASE and ASE-Las...
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