Optical power supply method, optical power supply system, and optical power supply device

Abstract

The present invention provides an optical power supply method including: a step in which a first light source sends out a first optical signal for optical power supply on a first optical power supply line; a step in which a power transfer unit receives the first optical signal by means of a first photodiode and converts the first optical signal to an electrical signal to obtain first electric power; a step in which a second light source sends out a second optical signal on a second optical power supply line which is a line of a passive optical network; a step in which the power transfer unit receives the second optical signal by means of a second photodiode and converts the second optical signal to an electrical signal to obtain second electric power; and a step in which the power transfer unit outputs the combined electric power of the first electric power and the second electric power to a power supply target instrument.