My project will be saeting up a wireless campus area network ,but I had to choose form radio frequency or free space optics and use to connect on five buildings in a small rural town. I choose free space optic because it transmits data from point-to-point and multipoint using low-powered infrared lasers. Unlike traditional copper wires or fiber-optic technology, which transmits data by light across glass, FSO uses laser technology to send optical signals through the air using lenses and mirrors to focus and redirect the beams and send data from one chip to another. And unlike radio frequencies, FSO technology does not require a spectrum license. An FSO system uses optical amplifiers and a telescope that sends multiple wavelengths of light in direct line of sight through the atmosphere to another telescope waiting to receive the information. The receiving telescope is connected to a highly sensitive receiver through an optical fiber and a DWDM demultiplexer. Since the system is bidirectional, each telescope can simultaneously send and receive information. The only weather condition that affects an FSO transmission is fog. Fog can corrupt the direct line of sight between the two telescopes because the moisture particles in the air are so small and dense that they act as millions of tiny prisms dissipating the band of light sent from the laser.
Free space optics provides a higher bandwidth to the end user at a faster speed. The photons transmitted by the laser are much quicker than electrons moving along a wire and they can pass straight through each other, which charge-bearing electrons cannot do. Because of this, large amounts of data, such as IP -based voice and video, can be transmitted through a narrow corridor of space. Optical wireless, based on FSO-technology, is an outdoor wireless product category that provides the speed of fiber, with the flexibility of wireless. It enables optical transmission at speeds of up to 1.25 Gbps and, in the future, is capable of speeds of 10 Gbps using WDM. This is not possible with any fixed wireless or RF technology. Optical wireless also eliminates the need to buy expensive spectrum (it requires no FCC or municipal license approvals worldwide), which further distinguishes it from fixed wireless technologies. Moreover, FSO technology’s narrow beam transmission is typically two meters versus 20 meters and more for traditional, even newer radio-based technologies such as millimeter-wave radio. Optical wireless products’ similarities with conventional wired optical solutions enable the seamless integration of access networks with optical core networks and helps to realize the vision of an all-optical network.
10 Gbit/s ARTOLINK model
Only one wireless communication system on the world market which can transfer data with speed 10 Gbit/s in the full-duplex mode at distances up to 2500m! Auto tracking
Narrow beams of emission – secure data
Wavelength 1550 nm
Special interface optimized for transmission in the atmosphere Double channel technology with backup supply
Automatic emitting control
Built-in service channel
Built-in telescope for easy targeting
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Topic: Wireless Technologies and Services
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