AWG DWDM Mux Demux Technology
Mar 02, 2023| AWG DWDM Mux Demux Technology
Arrayed Waveguide Grating (AWG) is a key device in the rapidly developing DWDM network. In 1988, Smit of Delft University in the Netherlands first proposed the concept of AWG. Its important application value has attracted the attention of institutions such as NTT Corporation and Bell Laboratories. After more than ten years of research and development, many different AWG devices have been developed and started to be used in DWDM systems. AWGs have filtering properties and versatility. A large number of wavelengths and channels can be obtained, and the multiplexing and demultiplexing of dozens to hundreds of wavelengths can be realized. Use N×N matrix form. N different optical signals can be transmitted simultaneously on N wavelengths, and can be flexibly combined with other optical devices to form multifunctional devices and modules.
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, with good repeatability, small size, good uniformity of insertion loss, and thermal stability after temperature control. It can reach 0.0013 nm/℃, and can be integrated with active devices to form an optoelectronic integrated circuit (OEIC), etc., which is the mainstream technology for future development.
At present, there are mainly three types of DWDM technologies developed at home and abroad, which are based on Arrayed Waveguide Grating (AWG—Arrayed Waveguide Grating) and Dielectric Film Filter (TFF) and Fiber Bragg Grating (FBG) technology. AWG is a planar waveguide device, which is an arrayed waveguide grating fabricated on a chip substrate using PLC technology. Compared with FBG and TTF, AWG has the advantages of high integration, large number of channels, low insertion loss, and easy batch automation production.