Optical isolator

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Notion

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Science and technology

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What Wikipedia says

An optical isolator, or optical diode, is an optical component which allows the transmission of light in only one direction. It is typically used to prevent unwanted feedback into an optical oscillator, such as a laser cavity.

Excerpt from the Wikipedia article “Optical isolator”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Eric Magnan, CC BY-SA 3.0, via Wikimedia Commons.