What type of light is used in fiber optics for data transmission?

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The correct answer is infrared light, which is essential in fiber optics for several reasons. Infrared light has wavelengths that are well-suited for transmission through optical fibers, allowing it to travel long distances with minimal loss of signal quality.

When using infrared light, data can be transmitted over fiber optic cables effectively because the materials used to make the fibers—such as glass or plastic—are designed to allow infrared wavelengths to be transmitted while minimizing attenuation and distortion. This property is critical for high-speed data communications, which require a reliable medium to carry signals without significant degradation over distances.

Additionally, infrared light is not absorbed as significantly by the fiber core compared to other wavelengths like visible light, which allows for higher data rates and longer transmission distances. This makes it the preferred choice for modern communication systems employing fiber optics technology.

In this context, while ultraviolet light, visible light, and gamma rays could theoretically be employed, they either do not possess the right properties for effective transmission through fiber optics or would lead to higher losses and inefficiencies.

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