Coarse wavelength division multiplexer: A wavelength division multiplexer combines a series of optical signals carrying information but with different wavelengths into one bundle and transmits them along a single optical fiber; at the receiving end, a certain method is used to combine the different wavelengths. Communication technology that separates optical signals. This technology can transmit multiple signals on one optical fiber at the same time

100G dense wavelength division multiplexer: 100G dense wavelength division multiplexer: A dense wavelength division multiplexer multiplexes optical signals of different wavelengths onto one optical fiber (multiplexing), or multiplexes them in one optical fiber Multiple optical channels are separated by wavelength (demultiplexed)

AWG DWDM wavelength division multiplexer: used for the release of C-band DWDM systems, used for the release of C-band DWDM systems, with excellent optical performance and high reliability