This enlightening Web site introduces the concept of Free Space Optics (FSO), a method of optical communication that uses lasers or light-emitting diodes as a means of data transmission. As long as there is a direct line of sight between two locations, there exists a potential for using FSO technology. Since the speed of light in air is faster than in the glass of fiber optics, "it is fair to classify Free Space Optics as optical communications at the speed of light." A good collection of applications notes and white papers are available to users of this site upon completion of the free, online registration. Several other resources are accessible without registering, such as diagrams of network technologies, frequently asked questions, and a glossary of terms.
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