Which property of laser light contributes to its ability to travel long distances in fiber optics?

Monochromaticity is a key property of laser light that significantly contributes to its ability to travel long distances in fiber optics. This term refers to the fact that laser light consists of a single wavelength or color. When light is monochromatic, it maintains a consistent phase and frequency, which allows it to be focused tightly into a beam and transmitted through the fiber without dispersing.

In fiber optics, the transmission of information relies heavily on the effectiveness of light traveling through the fiber. Monochromatic light minimizes the spreading of the signal over long distances, allowing for clearer and more efficient data transmission. This results in less signal loss and better performance compared to other light sources that may emit multiple wavelengths, which can lead to dispersion and distortion of the transmitted signal over distance.

The consistency provided by laser light's monochromatic nature enables it to effectively carry complex data over long distances in fiber optic cables, making it the preferred choice for high-speed communications.