Single-Mode Fiber & Multi-Mode Fiber

Single-Mode Fiber & Multi-Mode Fiber

✦ Single-Mode Fiber

• Allows only one light path (mode) to travel straight through the fiber.
• Features a very small core (around 8–10 microns).
• Ideal for long-distance communication (up to 100+ kilometers).
• Uses a laser light source for data transmission.
• Common in telecom networks, internet backbones, and long-range networks.

✦ Multi-Mode Fiber

• Supports multiple light paths (modes) traveling simultaneously inside the fiber.
• Has a larger core (usually 50 or 62.5 microns).
• Designed for short distances (up to 2 km, typically under 500 meters).
• Relies on an LED light source for data transmission.
• Popular in LANs, data centers, and building-level networks.

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Source: LinkedIn

Credits: Mr. Farasat Ali