Principle of Optical Coupler

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1)The working principle of optical coupler is that the photo-coupler produces optical current due to photoelectric effect, which is induced from the output of the photon and realizes the conversion of electro-light-one-electricity. An optocoupler, also known as photocoupler or opto-isolator, is a device which can transfer an electrical signal across two galvanically-isolated circuits by way of optical coupling. Unlike transformers or capacitors, which can only transfer AC signals across the isolation barrier, optocouplers can. An essential part of an optical network are the connectors and switches which are able to direct data fast and low loss from point A to point B, or to realize a conference involving several participants. They play a very important role in the applications of photonic devices and systems.

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