Opelink's DWDM module is based on TFF (thin film filter) wave division multipler technology, with a variety of package sizes and wavelength options, it will be different wavelengths of optical signal multiples into a single fiber for transmission, the receiving end of the solution multipler The signals in the fiber are broken down into signals of different wavelengths, and DWDM has channel intervals of 100GHz and 200GHz, which are suitable for long-distance, high-capacity backbone or ultra-large-capacity city network core nodes, and are widely used in telecommunications , City network, backbone network, data center, etc.