The CWDM LGX module is a wavelength division multiplexing technology based on TFF (thin film filter). It has a variety of package sizes and wavelength options; It multiplexes the optical signals of different wavelengths to a single optical fiber for transmission, and the receiving end uses the demultiplexing to decompose the signals in the optical fiber into signals of different wavelengths, HTD is equipped with single or double fiber transmission modes; Because of the advantages of CWDM, such as wide band and low requirement for system equipment, it has occupied an important position in the access layer of MAN.
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