Powered device and power sourcing equipment of optical power supply system, and optical power supply system
AssigneeKYOCERA Corporation
InventorTakahiro Kobayashi
Life of this patent
Estimating the term…
Abstract
A powered device of an optical power supply system includes a photoelectric conversion element, a semiconductor laser for feedback and a control device. The photoelectric conversion element converts feed light into electric power, wherein the feed light is from a power sourcing equipment. The semiconductor laser oscillates with a portion of the electric power, thereby outputting feed light to a power supplying side. The control device monitors a power supply amount of the electric power to a load, and according to the power supply amount, controls an electricity-light conversion amount of conversion that is performed by the semiconductor laser.
Claims7
An optical power supply system, comprising:
- a power sourcing equipment including a semiconductor laser that is configured to output feed light;
- and
- a powered device including a photoelectric conversion element that is configured to convert the feed light into electric power, the feed light being from the power sourcing equipment,
- wherein
- the powered device further includes
- an optical branching device for feedback configured to output a portion of the feed light to be input to the photoelectric conversion element from the power sourcing equipment, to a power supplying side as feedback feed light;
- and
- a first control device configured to
- monitor a power supply amount of the electric power to a load, the electric power being obtained by the conversion by the photoelectric conversion element, and
- according to the power supply amount, control a feedback amount of feedback being performed by the optical branching device, and
- the power sourcing equipment further includes:
- an optical combining device for feedback configured to
- combine the feedback feed light that is from the powered device and the feed light output by the semiconductor laser into combined feed light, and
- output the combined feed light;
- and
- a second control device configured to control output of the semiconductor laser such that an energy amount that the optical combining device is configured to output is constant.
Dependencies are inferred from the claim text.