15-03-2011, 02:06 PM
FREE SPACE OPTICS COMMUNICATION
Free Space Optics communication is also called as Free Space Photonics or Optical Wireless Communication. FSO uses LASER to transmit data , but instead of enclosing the data stream in a glass fiber , it is transmitted through air.
FSO’s freedom from licensing and regulation translates into ease, speed and low cost of deployment. Since Free Space Optics (FSO) transceivers can transmit and receive through windows, it is possible to mount Free Space Optics (FSO) systems inside buildings, reducing the need to compete for roof space, simplifying wiring and cabling, and permitting Free Space Optics (FSO) equipment to operate in a very favorable environment. The only essential requirement for Free Space Optics (FSO) or optical wireless transmission is line of sight between the two ends of the link.
he near infrared region of the spectrum. The laser light across the page link is at a wavelength of between 780 - 920 nm. Two parallel beams are used, one for transmission and one for reception.
Working of FSO
Free Space Optics transmits invisible eye safe light beams from a transmitter part (source) to receiver part (destination) using low power infrared LASERs in the terahertz spectrum. The beams of light in FSO systems are transmitted by LASER light focused on highly sensitive photon detector receivers. Commercially available systems offer capacitances in the range of 100Mbps to 2.5Gbps and demonstration systems report data rates as high as 160Gbps. FSO systems can function over distances of several kilometers. As long as there is a clear line of sight between the source and the destination and enough transmitter power, FSO communication is possible.
Free Space Optics communication is also called as Free Space Photonics or Optical Wireless Communication. FSO uses LASER to transmit data , but instead of enclosing the data stream in a glass fiber , it is transmitted through air.
FSO’s freedom from licensing and regulation translates into ease, speed and low cost of deployment. Since Free Space Optics (FSO) transceivers can transmit and receive through windows, it is possible to mount Free Space Optics (FSO) systems inside buildings, reducing the need to compete for roof space, simplifying wiring and cabling, and permitting Free Space Optics (FSO) equipment to operate in a very favorable environment. The only essential requirement for Free Space Optics (FSO) or optical wireless transmission is line of sight between the two ends of the link.
he near infrared region of the spectrum. The laser light across the page link is at a wavelength of between 780 - 920 nm. Two parallel beams are used, one for transmission and one for reception.
Working of FSO
Free Space Optics transmits invisible eye safe light beams from a transmitter part (source) to receiver part (destination) using low power infrared LASERs in the terahertz spectrum. The beams of light in FSO systems are transmitted by LASER light focused on highly sensitive photon detector receivers. Commercially available systems offer capacitances in the range of 100Mbps to 2.5Gbps and demonstration systems report data rates as high as 160Gbps. FSO systems can function over distances of several kilometers. As long as there is a clear line of sight between the source and the destination and enough transmitter power, FSO communication is possible.
