CCWDM is a mini-version of CWDM, a WDM based TFF technology that uses parallel beams to cascade signals of different wavelengths, and is 10 times smaller and less costly than CWDM. Wavelength division multiplexing technology has a broad application prospect in 5G communication and other fields

CWDM (Coarse Wavelength Division Multiplexing) is an optical fiber communication device that uses wavelength separation technology to combine multiple optical signals of different wavelengths into one fiber for transmission.It can merge multiple input ports into one output port to improve fiber utilization and transmission distance.