PSE device and powered device of optical power supply system, and optical power supply system

An optical power supply system, comprising:

• a powered device;
• a power sourcing equipment including a first semiconductor laser configured to oscillate with electric power and output feed light to the powered device;
• a second semiconductor laser for first signals;
• a first modulator configured to modulate first laser light output by the second semiconductor laser to first signal light and output the first signal light;
• an optical receiver;
• a third semiconductor laser for second signals;
• and
• a second modulator configured to modulate second laser light output by the third semiconductor laser to second signal light and output the second signal light to the optical receiver,
• wherein the powered device comprises a photoelectric conversion element configured to convert the feed light output by the power sourcing equipment into the electric power,
• wherein the optical receiver is configured to receive and convert the second signal light transmitted from the second modulator into an electrical signal corresponding to transmission data, and
• wherein the third semiconductor laser is configured to be powered by the electric power converted from the feed light by the photoelectric conversion element.

An optical power supply system, comprising:

• a powered device;
• a power sourcing equipment including a first semiconductor laser configured to oscillate with electric power and output feed light to the powered device;
• a second semiconductor laser for first signals;
• a first modulator configured to modulate first laser light output by the second semiconductor laser to first signal light and output the first signal light;
• an optical receiver;
• a third semiconductor laser for second signals;
• a second modulator configured to modulate second laser light output by the third semiconductor laser to second signal light and output the second signal light to the optical receiver;
• a first data communication device including the power sourcing equipment, the second semiconductor laser, the first modulator, and the optical receiver;
• and
• a second data communication device including the powered device, the third semiconductor laser, and the second modulator,
• wherein the powered device comprises a photoelectric conversion element configured to convert the feed light output by the power sourcing equipment into the electric power,
• wherein the optical receiver is configured to receive and convert the second signal light transmitted from the second modulator into an electrical signal corresponding to transmission data,
• wherein the first data communication device and the second data communication device are configured to perform optical communication with one another, and
• wherein the electric power obtained by the conversion of the feed light by the photoelectric conversion element is driving power for a transmitter and a receiver included in the second data communication device.