Optical CWDM technology refers to a WDM technology with a large distance between adjacent wavelengths.The distance between adjacent channels is generally greater than or equal to 20 nm, and the number of wavelengths is generally 4 or 8 waves, up to 18 waves. The most important advantage of CWDM is its low cost of equipment. We provide Optical CWDM products including CWDM M / D, CCWDM, CWDM OADM, 7+ years fiber optic product service experience, give you better service and more competitive product prices.