Fiber Optic Communication External Modulator
External modulation can be achieved using an integrated optical modulator employing a waveguide Mach-Zehnder interferometer. An input waveguide splits into two waveguides which recombine after a certain length. AOptical fiber backhaul providing high speed interconnection to a large number of antenna base stations, so Radio over Fiber (RoF) is one of the next generation technologies in optical fiber communication systems that support efficient convergence of wireless and optical access network structure. As analog devices, external modulators allow the amount of light passed to vary from some maximum amount (PMAX) to some minimum amount (PMIN).
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