AWG has been extensively applied in the optical fiber communication domain and become one of the key devices in the Dense Wavelengths Division Multiplexer (DWDM).
该器件在光纤通信领域中获得了极其广泛的应用，已经成为密集波分复用系统(DWDM)的关键器件之一。
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The basic model of planar waveguide gratings in reconfigurable optical add-drop multiplexer (ROADM) is presented. The characterization of the materials used in planar lightwave circuit is discussed.