An optical fiber cable is a type of network cable that transmits data using light signals instead of electrical signals.
It is made of glass or plastic fibers and is used for very high-speed and long-distance communication.
• It provides very high data transmission speed.⚡
• It supports long-distance communication without signal loss. 📏
• It is immune to electromagnetic interference (EMI). 📡 ❌
• It offers better security compared to copper cables. 🔐
An optical fiber cable consists of three main layers:
• Core—The central part made of glass or plastic that carries light signals.
• Cladding—Surrounds the core and reflects light back into the core using total internal reflection.
• Outer Jacket – Protects the fiber from physical damage and environmental effects.
Electrical data → converted to light → travels inside fiber → converted back to electrical signal 🔄
• SC (Subscriber Connector)
• LC (Lucent Connector)
• ST (Straight Tip)
These connectors are used to terminate fiber cables to devices.
• Speed: Very High 🚀
• Distance: Very Long 📏
• Cost: High 💰
• Security: Very High 🔐
• Uses light instead of electricity
• Made of glass or plastic
• Best cable for high speed and long distance
• Immune to EMI
Optical Fiber = Speed of Light ⚡
If the interviewer asks:
👉 “Why is optical fiber better than copper cable?”
Say confidently:
Optical fiber is better than copper cables because it offers higher speeds, longer distances, greater security, and immunity to electromagnetic interference.
