The Importance of Fusion Splicing for FTTP Networks

Monday Minute

Today, fiber optic providers are deploying fiber-to-the-premise (FTTP) networks en masse as residential and business customers demand more bandwidth and high-speed communication. A primary concern in planning the network, from a central office (CO) to an optical network unit (ONU) on the side of each customer’s building, will be when exactly to connect the optical cables using fusion splicing techniques.

What is Fusion Splicing? 

Fusion splicing is a method of joining two optical fibers end-to-end using a fusion splicing machine. The ultimate goal is to fuse two fibers together so that light passing through the fibers is not scattered or reflected back by the splice. The main question that comes up to one’s mind is why do we use splicing?

One of the primary uses of fusion splicing is for repairing broken fiber link. For example, it may be considered a viable solution for connecting 250-micron outside plant fiber to 900-micron inside plant fiber at the building entrance. In addition, fusion splicing can be used for creating fiber links within the data center or in the LAN. Furthermore, it is the preferred splicing method by planners and designers as it has a low optical loss range between 0.05-0.10 dB.

The Importance of Fusion Splicing for FTTP Networks

Fusion Splicing Advantages

Fusion splicing offers flexibility, scalability, and interoperability between fiber plants in a networking system. But that is not all fusion splicing brings to the table. With a wide variety of applications, fusion splicing has advantages including:


  • Offering a lower variable cost per fusion splice 
  • Low back reflections 
  • High mechanical strength 
  • Ability to withstand extremely hot temperatures 
  • A compact and neat solution  
  • Prevents dust and other contaminants from entering optical paths 
  • Quick and worry-free 

As technology continues to advance, there will be new requirements, technologies, and
enhanced software for buildable network designs created for the fiber optic industry. Fusion splicing will continue to increase in popularity and will be a viable solution to achieving necessary performance levels in applications requiring 5G, 25G and beyond

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about the benefits of software automation for the planning and design of FTTx networks.