FIBRE OPTICS
What is Fibre Optics?
Fibre optics is a technology that transmits data as light pulses through strands of glass or plastic fibers. It enables ultra-fast and long-distance communication, making it essential for internet, telecommunications, medical, and industrial systems.
Key Components
Core – The inner glass strand where light travels.
Cladding – A layer that reflects light back into the core to maintain signal.
Buffer Coating – Protective outer layer for strength and flexibility.
How It Works
Light signals are sent from a transmitter through the fiber cable.
These signals bounce within the core due to total internal reflection.
At the other end, a receiver converts the light back into data.


Applications
Internet & Broadband – Used in FTTH (Fiber to the Home)
Telecom Networks – Backbone of mobile and landline networks
Medical Imaging – Endoscopy and surgical tools
Industrial Control – Used in harsh environments for data transmission
Military & Aerospace – Secure and reliable communication

Types of Fibre Optic Cables
Single-mode fiber (SMF)
- Narrow core
- Long-distance communication (10 km and more)
- Used in telecom and ISP backbones
Multi-mode fiber (MMF)
- Wider core
- Shorter distances (up to 2 km)
- Used in LANs and enterprise networks