Non-Conventional Modulation Schemes
This chapter presents several non-conventional silicon-based integrated circuits realizing optical modulators as well as other functionalities such as logic gates. Although the presented concepts are in the state of pure research and yet far from being industrially implemented, they show the potential as well as a different point of view of how to allocate existing resources for achieving the desired goal. It presents a nanoscale miniaturized waveguide Mach–Zehnder interferometer (MZI) realized on a silicon chip. By illuminating the MZI structure with visible light, one varies the silicon (Si) refraction index and consequently the Si absorption coefficient for an infra-red (IR) information beam passing ...
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