By higher bitrate and more available wavelengths, Dense Wavelength Division Multiplexing (DWDM) is the most effective method to increase transmission capacity. Accelink can provide end-to-end DWDM device with almost all optical devices - from active modules to optical passive devices, including optical amplifier(EDFA & RFA), Mux & Demux, OPM, ROADM, MCS, OLP and OTDR etc.