How is modulation used in opto-electronics?

Modulation in opto-electronics is primarily used to encode information onto light waves for transmission. This process involves varying certain properties of the light wave—such as its amplitude, frequency, or phase—in accordance with the information signal being sent. By manipulating these characteristics, data can be effectively embedded into the light waves, allowing for effective communication over distances.

This technique is crucial in various applications like fiber optic communication, where data needs to be transmitted efficiently over optical fibers. By encoding information onto light, systems can achieve high data rates, increased bandwidth, and enhanced transmission distances compared to traditional electrical signals. The modulation process is essential for converting electrical signals into light signals and vice versa, enabling seamless data transfer in modern communication systems.