The internet we know today is largely dependent on the vast network of fiber-optic cables that span the globe. These cables, some of which run under the ocean, are responsible for transmitting data at incredible speeds, allowing for real-time communication and information sharing. The technology behind this intricate network is both fascinating and complex, involving elements such as Wavelength Division Multiplexing (WDM) and Artificial Intelligence (AI).

One of the leading companies in this field is Ciena. Ciena specializes in the design, implementation, and optimization of fiber-optic networks, enabling a faster and more reliable internet. They harness innovative technologies like WDM, which allows for multiple signals to be sent over a single fiber-optic cable, thereby increasing its capacity. This is crucial in the era of Hyperscale Data, where the demand for data transmission is ever-increasing.

Ciena also utilizes AI to manage and maintain these networks. The AI can anticipate potential issues, carry out repairs, and optimize the network's performance. This proactive approach reduces downtime and ensures a smoother user experience. AI's role in network management is indicative of the broader trend of AI incorporation in various industries.

The company's work is not just limited to land-based networks. They also have a significant role in managing and maintaining subsea cables. These cables, often stretching thousands of kilometers, connect continents and play a vital part in global communication.

In summary, the technology behind our day-to-day internet usage is far more advanced than it might seem. It involves incredible feats of engineering, cutting-edge technology, and continuous innovation. Companies like Ciena are at the forefront of this, ensuring that we can continue to communicate, share information, and access services in real-time, no matter where we are in the world.