Optical communication, also known as optical telecommunication, is a communication technology that uses light to transmit information. It involves the transmission of data through optical fibers, which are thin strands of glass or plastic that can carry light signals over long distances with very low loss. This technology has revolutionized telecommunications by allowing for faster and more efficient data transmission compared to traditional copper wire systems. Optical communication is widely used in telecommunications networks, data centers, and high-speed internet connections. It continues to be a rapidly evolving field with ongoing research focused on improving data transmission speeds, increasing network capacity, and reducing costs.