Rofea Optoelectronics independently developed Rof-EDFA series products are specially designed for the laboratory and factory test environment of optical fiber power amplification equipment, internal integration of high-performance pumping laser, high-gain erbium-doped fiber, and unique control and protection circuit, to achieve low noise, high stability output, AGC, ACC, APC three working modes can be selected. It is widely used in optical fiber sensing and optical fiber communication. The benchtop fiber amplifier has LCD display, power and mode adjustment knobs for easy operation, and provides an RS232 interface for remote control. Module products have the characteristics of small size, low power consumption, easy integration, programmable control and so on.