Arrayed Waveguide Grating (AWG, Arrayed Waveguide Grating) is the main technical approach for DWDM modules with more than 32 channels. AWG has filtering characteristics and versatility, can obtain a large number of wavelengths and channels, and realize the multiplexing and demultiplexing of tens to hundreds of wavelengths. The N×N matrix form can simultaneously transmit N different optical signals on N wavelengths, and can flexibly form multifunctional devices and modules with other optical devices. In addition, AWG also has high stability and good cost performance, which is very suitable for high-speed and large-capacity DWDM systems.
AWG device is a planar waveguide device based on optical integration technology. It has the potential advantages of planar waveguide technology. It is suitable for mass production, has good repeatability, small size, good insertion loss uniformity, and good thermal stability after temperature control. , And can be integrated with active devices to form an optoelectronic integrated circuit (OEIC), etc., which is the mainstream technology for the development of optical communications in the future.
