Shulou(Shulou.com)11/24 Report--

CTOnews.com8, March 31 (Xinhua) with the introduction of wireless charging functions for devices such as mobile phones, headphones and smartwatches, it is becoming more and more convenient for users to charge these electronic devices. However, due to the limited distance of wireless charging, the wireless charging function does not fully play its role.

According to a report on August 30 by Optica, the main open source journal of the American Optical Society, a team of researchers at Sejong University in South Korea have developed a new system that uses an infrared laser to wirelessly transmit 400 mW of optical power to a distance of 100 feet. Through a receiver, this energy can be converted into 85mW electricity, which means that users can charge mobile phones and other devices as long as they are in a room equipped with the system.

According to reports, the wireless charging system consists of two main parts: a transmitter that can be installed in the room, and a receiver that can be integrated into electronic devices. The emitter is a kind of optical power supply using erbium-doped fiber amplifier, and the central wavelength of the infrared beam is up to 1550nm.

The research team says the system can automatically align and charge as long as the transmitter and receiver are within range of each other's reception. If an object or person blocks the transmission route, the system will automatically be converted to a safe low-power transmission mode.

Jinyong Ha, head of the research team, said that through the system to wirelessly power devices such as mobile phones or tablets, users will no longer need to carry power cords with them. In addition, the system can also power a variety of smart devices, such as Internet of things (loT) devices in homes and devices used to monitor production in factories.

CTOnews.com learned that the research team is working to make the system more practical, such as improving the efficiency of photovoltaic cells to better convert light into electricity. In addition, the research team hopes to develop a new way for the system to charge multiple receivers at the same time.

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