![ā Wirelessā Optics? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Picture: http://www.cablefreesolutions.com/index.htm](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
More Related Content
What's hot
What's hot (20)
Similar to Fso
Similar to Fso (20)
Recently uploaded
Recently uploaded (20)
Fso
- 1. Free Space Optical Communication Picture: http://www.cablefreesolutions.com/index.htm
- 7. Attenuation :: Scattering ā¦contd Table: Comparison of beam propagation in haze and fog, Kim, McArthur and Koreevar The authors, studied the FOGGY weather conditions which were showing a discrepancy between analytical and empirical data. 20000 to 400000 40000 to 800000 5000 to 50000 Hail 4000 to 20000 8000 to 400000 1000 to 5000 Snow 400-400000 800 to 80000 100 to 10000 Rain 4 to 80 8 to 160 1 to 20 Fog Particle 0.04-4 0.08-8 0.01-1 Haze Particle 0.0004 0.0008 0.0001 Air Molecules 1550 nm Ī± (size paremeter ) 785 nm Ī± (size paremeter ) Radius ( Ī¼ m) Type
- 10. Some images Pictures: http://www.cablefreesolutions.com/imagelib.htm
Editor's Notes
- Thus, wireless need not mean āroamingāā¦ LOS is an important factor hereā¦ and it is not like the TV remote wherein u can move here and thereā¦. Here u need to be precise with the data, so u need to have a link up all the time.. So need not be roaming.
- To increase system performance w.r.t. attenuation (beam divergence), we can increase the size of the receiver, but causes degradation in sensitivity. Also, we can use HOLOGRAMS for allowing more power with LASERSā¦
- Eye safety is not an important issue. Attenuation is the major factor. We will taking attenuation in detail and touching upon Scintillation issues
- Absorption losses.. Donot contribute much because we choose the windows of propagation like that. Also, in the final eqn., the exponential term dominates