Here, we develop a novel design approach that co-optimizes inverse-designed wavelength division multiplexers and distributed Bragg gratings to achieve ultra-low crosstalk without compromising insertion loss. Selection criteria, tradeoffs, and 73 suppliers – including: Find more supplier details at the end of the Encyclopedia article. You are a not yet listed. Corning DWDM multiplexers and demultiplexers utilize advanced thin-film filter and athermal waveguide technology designed for low insertion loss, high isolation, and excellent temperature stability in a totally passive device. They are available in various channel counts at ITU industry standard.