: By splitting a light beam and reuniting it, we can create constructive or destructive interference. This allows us to switch signals "on" or "off" at speeds electronics can't touch.
Integrated optics is a field of study that focuses on the integration of optical components and devices on a single substrate, typically a semiconductor material. The goal of integrated optics is to miniaturize optical systems, making them more compact, efficient, and cost-effective. This field has gained significant attention in recent years due to its potential applications in telecommunications, data communication, and sensing.
The theory of integrated optics is based on the principles of electromagnetism and optics. The behavior of light in integrated optical devices is governed by Maxwell's equations, which describe the interaction of light with matter. In integrated optics, the light is confined to propagate within a waveguide, which is a structure that has a higher refractive index than its surroundings. The waveguide can be made of a variety of materials, including silicon, silicon dioxide, and III-V semiconductors.