Abstract
Microwave photonic (MWP) processing of impulse radio ultra wideband (IR-UWB) waveforms is the most critical stage in IR-UWB over fiber (IR-UWBoF) systems with optical and/or wireless transmission. In these systems, a centralized optical processing hub is the only place where a power efficient IR-UWB signal can be generated prior to optical distribution to an optical-wireless interface. In this work, very accurate analytical expressions for the photodetected optical power of photonically generated IR-UWB waveforms are derived and maximized, considering two common types of IR-UWB waveforms. Numerical simulations show excellent agreement with the obtained analytical expressions and provide useful design insights as well as guidelines in the development of IR-UWBoF systems.
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