What is free space optical communication system?

What is free space optical communication system?

Free space optical (FSO) communication is the wireless transmission of data via a modulated optical beam directed through free space, without fiber optics or other optical systems guiding the light. The fundamental idea goes back to ancient times, as light (or smoke) signals were used to transmit information.

How does free space optical communication work?

Free Space Optics (FSO) transmits invisible, eye-safe light beams from one “telescope” to another using low power infrared lasers in the terahertz spectrum. The beams of light in Free Space Optics (FSO) systems are transmitted by laser light focused on highly sensitive photon detector receivers.

What is FSO channel?

Free Space Optical communication (FSO) is a wireless communication technology which uses light to transmit the data in free space. FSO has advantages like unlicensed spectrum and higher bandwidth. In this paper FSO system merits and demerits, challenges in FSO, and various channel models are discussed.

What are the advantages of FSO?

There are many advantages of FSO like high bandwidth and no spectrum license. The transmission in FSO is dependent on the medium because the presence of foreign elements like rain, fog, and haze, physical obstruction, scattering, and atmospheric turbulence are some of these factors.

What are the disadvantages of FSO?

Following are the drawbacks or disadvantages of FSO: ➨Spreading loss is higher and there is atmospheric loss due to water and carbon dioxide molecules. ➨Power consumption is higher. ➨It is easy to intercept due to its propagation medium and hence it is less secure than OFC.

What is the bandwidth of free space?

Free Space Optics (FSO) is a technology that uses laser beams via a line of sight optical bandwidth connection to transfer data, video or voice communications across areas ranging typically from 100m to a few kilometres at throughput bandwidths up to 1.5Gbps at frequencies above 300GHz of wavelengths, typically, 785 to …

How does laser communication in space work?

Laser communications terminals in space use narrower beam widths than radio frequency systems, providing smaller “footprints” that can minimize interference or improve security by drastically reducing the geographic area where someone could intercept a communications link.

How is laser used in space?

One of the most common uses of lasers in space is for environmental and remote sensing. In this application, a laser stationed on a satellite can orbit Earth (or other heavenly bodies such as the Moon or Mars) and direct a sequence of short optical pulses onto the surface.

How does space communication work?

At its simplest, space communications relies on two things: a transmitter and a receiver. A transmitter encodes a message onto electromagnetic waves through modulation, which changes properties of the wave to represent the data. Each device receives signals from the router, which transmits data from the internet.

What do you mean by free space laser communication?

Laser communication in space is the use of free-space optical communication in outer space . Communication may be fully in space (an inter-satellite laser link) or in a ground-to-satellite or satellite-to-ground application.

What is free space optical communication?

Free-space Optics (FSO) is a communication technology using the light moving in open spaces to allow transmission of information between points. The term “free space” can refer to any open space, such as air or outer space. Free space optics is typically used in situations where fiber optic cables cannot be laid down, or their cost is too expensive.

What is free-space optics (FSO)?

Introduction. FSO (free space optics) is an optical communication technology in which data is transmitted by propagation of light in free space allowing optical connectivity.

  • Applications. FSO communication link is currently in use for many services at many places.
  • Merits.
  • Limitations.
  • Different Studies Based on Attenuation Effect.
  • What is laser communication system?

    What is Laser Communication? Laser communications systems are wireless connections through the atmosphere. They work similarly to fiber optic links, except the beam is transmitted through free space.