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The next generation of optical networks requires the development of optical technology that supports high bandwidth, such as the coherent systems. The coherent detection allows the in-phase and quadrature components of a QPSK signal to be extracted as a result of the interference with a local oscillator. An integrated optics flexible 90° hybrid coupler device based on a single organic-inorganic di-ureasil...
The insertion of mobile ions and coupled changes of electron concentration are exploited to induce a non-volatile and reversible change of the optical properties of mixed ionic and electronic conductors (MIECs). The physical mechanisms responsible for the change of the real and imaginary part of the MIECs' refractive index upon ion-intercalation are extensively investigated in the visible and near-IR...
The integration of active materials on silicon is emerging as a promising field in silicon photonics to improve the performance metrics of key photonic components, in particular active components. Active materials allow tuning their optical properties as function of external stimuli. Amongst them, vanadium dioxide (VO2) has been largely investigated for different applications due to its controllable...
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