DCM DWDM

OTN DWDM Dispersion Compensation Module DCM DCF Board Card DCF is the negative dispersion optical fiber, which is a new kind of single mode optical fiber designed for current G.652& G.655 standard single-mode optical fiber; the dispersion of G.652 optical fiber in the vicinity of 1550nm wavelength is positive (17-20) ps/nm (km), and the dispersion of G.655 standard optical fiber in the vicinity of 1550nm wavelength is positive (4-6) ps/nm (km), with a positive dispersion