📖 What is Multimode Fiber (MMF)?
A type of optical fiber with a larger core diameter (typically 50 or 62.5 microns) that allows multiple modes of light to propagate, suitable for short-distance, high-bandwidth applications.
"MMF typically uses LEDs for shorter distances. Remember that MMF suffers from modal dispersion over long distances, which is why it's usually restricted to within a building or data center (typically <550 meters)."
📚 Certification: Certified Network Associate (200-301)
🔑 What are the Key Concepts of Multimode Fiber (MMF)?
- ▸ Larger core diameter (50 or 62.5 microns).
- ▸ Uses LEDs or VCSELs as a light source.
- ▸ Subject to modal dispersion over longer distances.
🎯 How does Multimode Fiber (MMF) appear on the 200-301 Exam?
Select the appropriate cabling for a high-speed connection between switches in the same data center.
Identify the typical distance limitation of MMF compared to SMF.
❓ Frequently Asked Questions
Why use MMF if SMF goes further?
MMF optics and transceivers are generally cheaper, making it cost-effective for short distances like within a building.
What color is MMF cable typically?
Historically orange (OM1/OM2) or aqua (OM3/OM4), though standards vary.