Fiber Terminators

Summary

This introductory fiber optic lab covers essential fiber types and connectors used in data communication. It explains the characteristics of multimode and single mode fibers, their identification by color and descriptors, and the importance of polishing techniques for optimal light transmission. Various connector types, including ST, FC, LC, and MTP, are discussed, emphasizing their specific applications and functionalities. The session aims to provide a foundational understanding of fiber optics, equipping users with the knowledge needed for effective installation and maintenance in fiber optic systems.

Takeaways

• 😀 Fiber optic cables are primarily categorized into two types: multimode and single mode.
• 🔌 Multimode fiber is used for short distances, typically indoors, while single mode is suitable for longer distances and can be used indoors and outdoors.
• 🎨 Multimode cables are generally orange, with newer options being aqua and violet, while single mode cables are always yellow.
• 📏 The core size for multimode fibers is often 50/125 or 62.5/125 microns, whereas single mode fibers have a core size of 9/125 microns.
• 🖨️ Fiber cables often have printed descriptors like 'OM' for multimode and 'OS' for single mode, indicating their specifications.
• 🛠️ Terminators are essential for connecting fiber cables, featuring protective dust caps to prevent contamination.
• 🔍 Connector types include ST, FC, SC, LC, E2000/LSH, and MTP, each designed for specific applications.
• 💡 Polishing types, such as Flat Polish, PC, UPC, and APC, help optimize light transfer and reduce reflection in fiber connections.
• 🎨 Connector housing colors help identify their type: gray may indicate PC or UPC, blue is UPC for single mode, and green is APC.
• 🔗 Understanding fiber types, terminators, and connector specifications is crucial for effective data communication setups.

Q & A

What are the two main types of fiber optic cables discussed?

The two main types of fiber optic cables are multimode and single mode.

What applications are multimode fibers typically used for?

Multimode fibers are generally used for indoor applications over short distances.

How can you identify multimode and single mode fibers based on their color?

Multimode cables are typically orange, aqua, or violet, while single mode cables are usually yellow.

What does the designation 'OM' and 'OS' stand for in fiber optic cables?

'OM' stands for Optical Multimode, and 'OS' stands for Optical Single Mode.

What is the significance of the fiber sizes 50/125 and 9/125?

50/125 indicates a multimode fiber with a core diameter of 50 microns and an outer diameter of 125 microns, while 9/125 indicates a single mode fiber with a core diameter of 9 microns and the same outer diameter.

What are the advantages of using angled polish connectors (APC)?

APC connectors are designed with an 8-degree angle that minimizes light reflection back to the source, improving signal quality.

How do you differentiate between the various types of fiber connectors?

Fiber connectors can be differentiated by their housing design and color coding; for example, blue typically indicates UPC polish, while green indicates APC polish.

What role does polishing play in fiber optic connectors?

Polishing ensures the end of the fiber is smooth, which improves the transfer of light between connections and reduces signal loss.

What is the function of the dust cap on fiber optic connectors?

The dust cap protects the end of the fiber connector from dirt, oil, and other contaminants that could distort the light signal.

What are the differences between the ST and FC connector types?

The ST connector uses a bayonet mount that requires a twist to lock in place, while the FC connector is a push-in type without a locking mechanism.