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A few-mode fiber prototype having a rectangular core geometry is experimentally characterized for its modal delays and field profiles by time-gated interferogram analysis. Excellent agreement between experimental and numerical simulations is established.
Mode division multiplexed (MDM) transmission is prone to mix, and necessitates that all spatial channels on a carrier wavelength remain intact, so that the information set can be unraveled at the receiver following multi-channel coherent detection and digital signal processing. This requirement is extended to the network switching gear, which should ‘jointly switch’ all modes. Wavelength-selective...
The properties of rectangular core fiber are investigated for mode division multiplexing. Polarization degenerate mode groups, favorable mode profiles for device coupling, modal area uniformity, and good splice performance suggest it's a good candidate.
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