Patent attributes
A power over fiber system includes a power sourcing equipment, a powered device, optical fiber cables, optical switches, a detector and a control device. The power sourcing equipment includes a semiconductor laser that oscillates with electric power, thereby outputting feed light. The powered device includes a photoelectric conversion element that converts the feed light into electric power. The optical fiber cables transmit the feed light. The optical switches selectively connect the optical fiber cables. The optical fiber cables and the optical switches can form at least two transmission routes of the feed light. The detector detects a poor transmission point on a transmission route among the transmission routes of the feed light. The control device controls the optical switches so as to form another transmission route among the transmission routes of the feed light in accordance with the poor transmission point, the transmission route bypassing the poor transmission point.
