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Fiber Optics Basics

Fiber Optics Basics

Optical Fiber is a length of ultra-pure glass or plastic that provides a closed pathway for transmitting light between two points. Glass optical fibers are by far the most commonly used, so we will assume that the optical fibers in all our discussions are made of glass. Optical Fiber: A …

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Photoelectric Devices and Their Applications

Photoelectric devices typically contain solid-state output switches. A solid-state switch has no moving parts (contacts). A solid-state switch uses a triac, SCR, NPN (current sink) transistor, or PNP (current source) transistor output to perform the switching function. See Figure 1. The triac output is used for switching AC loads. The …

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