1U Rack Mount Chassis https://www.wdmlight.com/1U-Rack-Mount-Chassis.html The 1U Rack Mount CWDM product from WDMLight company can be installed in a standard 19-inch cabinet, using advanced optical film filtering technology to support up to 18 CWDM standard wavelengths (1270-1610nm) optical signals multiplexed into one Transmission in the root fiber; when the capacity of the fiber is limited, the transmission capacity of a pair of fibers can be increased by 18 times on the existing fiber infrastructure by using the color light module, which has low cost, low power consumption, and small volume. Many advantages, such as a low-cost, high-performance transmission solution, is widely used in telecommunications, broadcasting, enterprise networks, campus networks, and other fields.