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A novel approach to generate tunable microwave photonic pulse shaping based on modified incoherent frequency-to-time mapping (FTTM) is proposed. By adjusting the product of the bit-rate and the pulsewidth (i.e. BΔT) to introduce the intersymbol interference, we demonstrate the effectiveness of our approach by generating typical UWB and triangular pulses.
We present two arrayed waveguide gratings fabricated in silicon-oxynitride for near-infrared Raman spectroscopy. Our devices exhibit very low losses and polarization insensitivity over a large spectral range of 156 nm and 214 nm, respectively.
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