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Increasing the information capacity of communication channels is a pressing need, driven by growing data demands and the consequent impending data crunch with existing modulation schemes. In this regard, mode division multiplexing (MDM), where spatial modes of light form the encoding basis, has enormous potential but is impeded by noise due to imperfect channels. Here, this challenge is overcome by...
Multi‐Bit Optical Communication with Vectorial Light
In article number 2200844, Keshaan Singh, Andrew Forbes, and colleagues outline a new optical communication protocol that exploits spatial patterns of light for multi‐dimensional encoding in a manner that does not require the patterns to be recognised, thus overcoming the prior limitation of modal distortion in noisy channels. The result is a new...
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