Photoelectric detection in optical modules
Photodetectors, also called photosensors, are devices that detect light or other forms of and convert it into an electrical signal. This review summarizes recent research progress in optically coupled photodetectors, providing a systematic analysis of the operational mechanisms and performance characteristics of five key coupling configurations: optical waveguides, surface plasmon resonance structures . Usually, the quantity being detected is the optical power, which is related to the rate of incoming photons. A Photoelectric Sensor consists primarily of an Emitter for emitting light and a Receiver for receiving light. OMRON provides many varieties of Sensor, including diffuse-reflective, through-beam, retro-reflective, and distance-settable Sensors, as well as Sensors with either built-in or separate amplifiers and Fiber Units.
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