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Laser communications systems are wireless connections through the atmosphere. Laser communications systems work similarly to fiber optic links, except the beam is transmitted through free space. While the transmitter and receiver must require line-of-sight conditions, Laser communications systems have the benefit of eliminating the need for broadcast rights and buried cables. Laser communications systems can be easily deployed since they are inexpensive, small, low power and do not require any radio interference studies. The carrier used for the transmission signal is typically generated by a laser diode. Two parallel beams are needed, one for transmission and one for reception.
Laser communications will be a hot topic , as a solutions for how to satisfy ever increasing bandwidth needs are in high demand. in Laser communications systems bandwidth could be distributed in neighborhoods by putting laser communication systems on top of homes and pointing them towards a common transceiver with a fast link to the Internet. With possible transmit speeds of up to a gigabit per second, Other applications for Laser communications systems technology include temporary connectivity needs (e.g. sporting events, disaster scenes, or conventions), or space based communications.
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http://instruct1.cit.cornell.edu/courses..._level.htm
http://server4.oersted.dtu.dk/courses/31...ject11.pdf
http://spie.org/etop/2007/etop07k12IX.pdf |
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