AWG can realize wavelength multiplexing or demultiplexing

AWG is the first component to commercialize Planar Lightwave Circuit technology. The method is to deposit a silicon dioxide (SiO2) film layer on a silicon wafer, and then use the photolithography process (Photolithography) and the reactive ion etching method (Reactive Ion Etch) to define the array waveguide and the light splitting element, etc., and then on the top layer Finish with a protective layer. Since AWG uses the same manufacturing process as general semiconductors, the production cost of multi-channels is similar to that of low-channels, but it is more suitable for mass production and has a higher degree of integration. Therefore, it has considerable advantages in multi-channel components and future development. potential.

The basic function of the AWG is wavelength multiplexing/separation, which can realize wavelength multiplexing/demultiplexing, insertion/division multiplexing, wavelength routing, etc. By combining with an optical switch, wavelength selection is possible. AWG can also be combined with multi-wavelength lasers to form a multi-wavelength light source.