BACKGROUND

Technical Field

The present disclosure relates to optical power supply.

Description of Related Art

Recently, there has been studied an optical power supply system that converts electric power into light called feed light, transmits the feed light, converts the feed light into electric energy, and uses the electric energy as electric power.

There is disclosed in JP 2010-135989 A an optical communication device that includes: an optical transmitter that transmits signal light modulated with an electric signal and feed light for supplying electric power; an optical fiber including a core that transmits the signal light, a first cladding that is formed around the core, has a refractive index lower than that of the core, and transmits the feed light, and a second cladding that is formed around the first cladding, and has a refractive index lower than that of the first cladding; and an optical receiver that operates with electric power obtained by converting the feed light transmitted through the first cladding of the optical fiber, and converts the signal light transmitted through the core of the optical fiber into the electric signal.

SUMMARY

However, to electrical devices having a conventional electrical connection part but not an optical connection part, an optical fiber cable cannot be connected, and consequently an optical power supply system cannot be introduced.

According to a first aspect of the present disclosure, there is provided a photoelectric adapter including:a power sourcing equipment device including a semiconductor laser that oscillates with electric power, thereby outputting feed light;an optical connector connection part to which an optical connector is connectable; andan electrical connector that is connectable to an electrical connector connection part of an electrical device, whereinthe power sourcing equipment device is driven by receiving the electric power supplied from the electrical device through the electrical connector, and outputs the feed light from the optical connector connection part.

According to a second aspect of the present disclosure, there is provided a photoelectric adapter including:a powered device including a photoelectric conversion element that converts feed light into electric power;an optical connector connection part to which an optical connector is connectable; andan electrical connector that is connectable to an electrical connector connection part of an electrical device, whereinthe powered device receives the feed light supplied through the optical connector connection part, converts the feed light into the electric power, and outputs the electric power from the electrical connector.

According to a third aspect of the present disclosure, there is provided an optical transmission cable capable of receiving and outputting electricity, including:a first electrical connector at a first end;a second electrical connector at a second end;an optical fiber in between;at the first end, a power sourcing equipment device including a semiconductor laser that oscillates with electric power input through the first electrical connector, thereby outputting feed light to the optical fiber; andat the second end, a powered device including a photoelectric conversion element that converts the feed light transmitted through the optical fiber into electric power, and outputs the electric power from the second electrical connector.

