UNIT OF CONTROLLER LINK, OPTICAL FIBER CABLE, OPTICAL RING OR BUS, H-PCF CABLE

This text describes various components used in fiber optic communication systems:

• Unit of Controller Link: This component likely refers to a device or module responsible for managing and controlling the flow of data through the fiber optic network.
• Optical Fiber Cable: The fundamental medium used to transmit data as light pulses over long distances.
• Optical Ring or Bus: These terms describe different network topologies. A ring topology involves a closed loop, while a bus topology uses a single shared cable.
• H-PCF Cable: This likely refers to a specific type of fiber optic cable with a unique construction, possibly using hollow core fibers (HC-PCF).