The AWG (arrayed-waveguide grating) multiplexer/demultiplexer combines and splits many channels (up to 88) of optical signals with different wavelengths useful in DWDM systems. These devices are capable of multiplexing many wavelengths into a single optical fiber, thereby increasing the transmission capacity of optical networks considerably. Among WDM technologies, Thin-Film Filter (TFF) and Arrayed Waveguide Grating (AWG) are two leading approaches, offering unique advantages in cost, capacity, and. We produce fiber-coupled Wavelength-Division Multiplexing (WDM) devices that combine (Mux) or separate (DeMux) multiple wavelength channels into or from a single optical fiber. AWGs. GEZHI Photonics offers a full range of AWG products, including 50GHz, 100GHz AAWG. The module can also provide a splitter (i. tap), for sampling and monitoring link traffic.