Optoelectronics is widely considered a sub-discipline of photonics, which refers to the study and application of the physical science of light. The study of light is an incredibly complex and intersectional field that concerns various schools of thought. Photonics and optics, for example, are two undoubtedly interlinked yet distinct areas of science. Likewise, optoelectronics and electro-optics are entirely separate yet related entities.
It can be easy to lose track of the vernacular when considering these various fields from such a broad vantage point. A simple way to distinguish between optics and photonics is that both are concerned with manipulating light, but electro-optics is concerned with electrically manipulating devices and systems to produce desired light properties while photonics is concerned with manipulating light to produce a required electrical signal.
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