(n.) All types of electrical devices that detect light, such as photodiodes, as well as those that generate, control, or amplify light, such as lasers and light-emitting diodes (LEDs).
opto-electronics
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(n.) All types of electrical devices that detect light, such as photodiodes, as well as those that generate, control, or amplify light, such as lasers and light-emitting diodes (LEDs).