What is a bus waveguide?

A bus waveguide is a type of waveguide structure used to guide electromagnetic waves, typically in integrated photonics or microwave communication systems. It serves as a shared transmission medium, allowing multiple signals to propagate simultaneously with minimal crosstalk. Bus waveguides are often designed to efficiently couple light or radio waves to and from various devices, such as lasers, detectors, and modulators. Their configuration can vary, including straight or bent geometries, depending on the application requirements.