Power-over-fiber system
A power-over-fiber system includes a power sourcing equipment including a semiconductor laser that oscillates with electric power to output feed light, a plurality of powered devices each including a photoelectric conversion element that converts the feed light from the power sourcing equipment into electric power, an optical fiber cable that transmits the feed light from the power sourcing equipment to the plurality of powered devices, and a switch element that distributes the feed light in accordance with a proportion of electric powers needed by the plurality of powered devices. In the power-over-fiber system, the switch element sequentially switches an optical path of the feed light to be distributed to the respective powered devices, with a time distribution corresponding to the proportion of the electric powers needed by the plurality of powered devices to distribute the feed light.
1. A power-over-fiber system, comprising:
a power sourcing equipment including a semiconductor laser configured to oscillate with electric power to output feed light;
a plurality of powered devices each including a photoelectric conversion element configured to convert the feed light from the power sourcing equipment into electric power;
an optical fiber cable configured to transmit the feed light from the power sourcing equipment to the plurality of powered devices; and
a switch element configured to, in response to receiving a command from the power sourcing equipment, distribute the feed light in accordance with a proportion of electric powers needed by the plurality of powered devices.
2. The power-over-fiber system according to claim 1 , wherein
the switch element is configured to sequentially switch an optical path of the feed light to be distributed to the respective powered devices, with a time distribution corresponding to the proportion.
3. The power-over-fiber system according to claim 1 , wherein
the switch element is disposed between the power sourcing equipment and the optical fiber cable.
4. The power-over-fiber system according to claim 1 , wherein
the switch element is disposed between the optical fiber cable and the plurality of powered devices.
5. The power-over-fiber system according to claim 1 , wherein
a semiconductor material of a semiconductor region that exhibits a light-electricity conversion effect of the semiconductor laser is a laser medium having a laser wavelength of 500 nm or shorter.
6. The power-over-fiber system according to claim 1 , wherein
a semiconductor material of a semiconductor region that exhibits a light-electricity conversion effect of the photoelectric conversion element is a laser medium having a laser wavelength of 500 nm or shorter.
7. The power-over-fiber system according to claim 1 , wherein
the power sourcing equipment is configured to output the feed light equivalent to a total amount of the electric powers needed by the plurality of powered devices.