Radio frequency amplification circuit and optical receiver for optical fiber radio frequency communication network

The invention provides a radio frequency amplification circuit for an optical fiber radio frequency communication network, which comprises a radio frequency input end IN, a radio frequency output end OUT, an amplifier, a power supply, a demultiplexer C, a radio frequency monitor and a controller MCU , wherein the radio frequency input end IN, the amplifier and the radio frequency output end OUT are sequentially connected; the power supply is connected with the amplifier to provide a power supply for the amplifier; the demultiplexer C is connected to the output end of the amplifier and divides an output signal amplified by the amplifier into two paths; a master path is connected with the radio frequency output end OUT; a slave path is connected with the radio frequency monitor; the radio frequency monitor is connected with the controller MCU; and the controller MCU is also connected with the control end of the power supply. By adopting the structure, power consumption can be automatically regulated according to output capacity.