ACP's Dense Wavelength Division Multiplexer (DWDM) utilizes thin film coating technology and proprietary design of non-flux metal bonding micro optics 200GHz ITU Channel Spacing packaging to achieve optical add and drop at the ITU wavelength. Channel numbers can be as high as 40 (16) for 100 (200) GHz systems in C band or in L band. We provide ITU channel center wavelength, low insertion loss, high channel. Corning's dense wavelength division multiplexers (DWDMs) are integrated optical modules that combine, or multiplex, and separate, or demultiplex multiple optical signals of different wavelengths in a single fiber. The product design is based on TFF (Thin Film Filter) technology. Comply with Telcordiagr-1209-core standard.