Fiber Optic Cable Summary Table
Fiber optic cables transmit data as light through glass or plastic fibers, offering high-speed, long-distance communication with minimal signal loss.
| Feature | Description |
|---|---|
| Definition | A cable containing one or more optical fibers that carry light signals for data transmission, similar in assembly to electrical cables but using light instead of electricity ( ). |
| Core | The central glass or plastic strand through which light travels; size varies by fiber type (Singlemode ~9 µm, Multimode 50–62.5 µm) ( ). |
| Cladding | Surrounds the core with a lower refractive index to enable total internal reflection, keeping light confined within the core ( ). |
| Coating/Buffer | Protective polymer layers around the cladding to prevent physical damage; may include acrylate or polyimide coatings ( ). |
| Cable Jacket | Outer protective layer, chosen based on environment (indoor, outdoor, armored, or plenum-rated) ( ). |
| Types | Singlemode (SMF): Long-distance, high-speed, small core, minimal dispersion. <br> Multimode (MMF): Shorter distances, larger core, multiple light paths ( ). |
| Configuration | Simplex: Single fiber. <br> Duplex: Two fibers for bidirectional communication. <br> Ribbon: Multiple fibers in a flat array ( ). |
| Connectors | Common types include LC, SC, ST, MPO/MTP, and CS, selected based on network requirements ( ). |
| Light Source | Laser or LED generates modulated light to encode digital data ( ). |
| Receiver | Photodetector (e.g., photodiode) converts incoming light back into electrical signals ( ). |
| Data Transmission | Light pulses carry information at speeds up to 100 Gbps or more; immune to electromagnetic interference ( ). |
| Attenuation | Signal loss measured in dB/km; typical modern multimode fiber: 3 dB/km at 850 nm, 1 dB/km at 1300 nm ( ). |
| Applications | Telecommunications, data centers, FTTH/FTTP, long-haul networks, high-speed LANs, and smart infrastructure ( ). |
This table summarizes the core components, types, and performance characteristics of fiber optic cables, providing a foundational reference for understanding their use in modern communication networks.
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