Light modulation

Light modulation involves changing certain properties of a light wave, such as its intensity, phase, or frequency, to encode information. This process allows the light to carry data for applications like communication systems and optical devices. For example, in fiber optics, light is modulated to transmit digital signals over long distances with high accuracy. Modulation techniques include varying the brightness (amplitude), shift in wave timing (phase), or color (frequency). This controlled alteration enables efficient, reliable transmission of information using light, making it a fundamental concept in telecommunications and many modern technologies.