WE-1550-YZB-C optical fiber amplifier uses well-known high-performance erbium-ytterbium co-doped double-clad fiber and low-noise pump lasers. It has a reliable circuit design and efficient heat dissipation design. This device is with a height of 2RU, a 4.3-inch TFT LCD widescreen display, and touchscreen buttons. The interface offers clear layer differentiation and well-organized menus for easy navigation. The amplifier can support total output power of +39dBm (maximum). The entire device built-in CWDM and support up to 64 output ports (maximum). Optional RF detection is available. It provides SNMP protocol network management software and WEB network management, suitable for amplified transmission of downstream 1550nm optical signal in FTTH network.