Optical Wireless Security
Scott R. Ellis, EnCE, RCA, kCura Corporation
Optical wireless systems provide a high degree of physical security if only because the signals are difficult to intercept. They typically take place high above ground. This, in and of itself, helps protect it from tampering and intrusion. Furthermore, optical wireless networking transmissions occur on the physical, or layer 1, level. Optical and copper cables are far more vulnerable to unauthorized access. The level of difficulty of interception of optical wireless signals that using narrow beam technology makes this form of network communication the most appealing choice for establishing communications between remote locations. This chapter focuses on free space ...
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