What is the optics of free space?
free space optics (FSO) is a communication technology using light moving in open spaces that allows you to transfer information between points. The term "free space" can refer to any open space such as air or universe. Free space optics are usually used in situations where optical fiber cables cannot be laid or their costs are too expensive.
FSO implementation can be done in several ways. The use of infrared laser lights is a common regime, as well as light emitting diodes (LED) at shorter distances with lower data speed. The optics of free space are commonly used in communication between the spacecraft and the current range of optical communication with the free space is in low thousands of kilometers. With the use of optical telescopes to expand the beams, distances could be achieved much further. The quality of the signal is also dependent on the weather and other atmospheric conditions. The light rays we are myed in the open spaceOptics is particularly narrow and is also very easy to encrypt, making it a relatively safe form of communication. Using a specific type of laser, you can create a signal that is distracted if it is interrupted in any way.
There are many advantages and disadvantages for free space optics. The main advantages are that these systems are easy to implement, are safe, allow high bit speeds with several signal errors, and are unlike the radio signal that must be licensed. While the signal cannot be interrupted by electromagnetic waves, it is susceptible to interference from atmospheric conditions including rain, fog and snow. However, the attenuation they cause can be modulated using a multi-signal device or a higher end device that increases the signal.
Despite its shortcomings, the optics of free space has a wide range of applications. Large university campuses, for example, canUse FSO when they need to connect to local areas of networks (LAN) together without cable use. Large cities often use this technology for the same reason. In addition to the spacecraft, free space optics can also be used to help satellites when in groups. It can also be used as a backup system in the case of land network failure or to facilitate fast communication between two cable networks of optical fibers. The optics of the free space is also a suitable modality that is used in setting up temporary installation, such as a conference, and allows optical fiber speed without cable load.