A demultiplexer-free WDM transmitter uses time delays to build a unitary mixing matrix among comb lines and applies MIMO pre-equalization in DSP, turning an unfiltered comb plus modulator array into independent per-wavelength channels.
It simplifies the monolithic integration of an OFC and a modulator array with any integration platform like silicon or thin-film lithium niobate [9]
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2025 1verdicts
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A Comb-based Colorless Coherent WDM Transmitter
A demultiplexer-free WDM transmitter uses time delays to build a unitary mixing matrix among comb lines and applies MIMO pre-equalization in DSP, turning an unfiltered comb plus modulator array into independent per-wavelength channels.