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Wi-Charge does claim that using infrared light for long-range wireless power has advantages over using radio frequency or ultrasound because of two main reasons: Physics. Because of their very short wavelength, infrared beams diverge (see Diffraction) much less than technologies with longer wavelengths. This means that the diameter of the beam ...
Visible, infrared (IR), or ultraviolet (UV) light is used to carry a wireless signal. It is generally used in short-range communication; extensions exist for long-range and ultra-long range . OWC systems operating in the visible band (390–750 nm) are commonly referred to as visible light communication (VLC).
Infrared window (part of the device body transparent to infrared light beam) Wavelength: 850–900 nm; The frame size depends on the data rate mostly and varies between 64 B and 64 kB. Additionally, bigger blocks of data can be transferred by sending multiple frames consecutively. This can be adjusted with a parameter called "window size" (1 ...
Long-range optical wireless communication or free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking over long distances. "Free space" means air, outer space, vacuum, or something similar.
Some repeaters also correct for distortion of the optical signal by converting it to an electrical signal, processing that electrical signal and then retransmitting an optical signal. Such repeaters are known as optical-electrical-optical (OEO) due to the conversion of the signal. These repeaters are also called regenerators for the same reason.
Since only one wireless device can transmit at once, wireless transmissions are doubled (router to the repeater and then repeater to the client versus just router to the client), and so: Wireless throughput is reduced by at least 50%. [1] Wireless interference (e.g., with other networks on the same channel) is at least doubled.
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