Cable splicing is the process of joining fiber optic cables to make one long network path. Because of this, it is very important in modern telecommunications. In fact, Imarc Insights shows that the global telecom cable market reached USD 59 billion in 2025, which shows the big need for reliable networks. To help with this, network operators use the right methods to keep signals strong over long distances. For this reason, this work needs skill to make sure the network works well.
Also, learning about the splicing process helps businesses make better decisions for their networks. As a result, companies in Southeast Asia are building bigger fiber networks to handle more data. Importantly, good splicing technique lowers signal loss and makes networks more reliable. That’s why this guide explains the main points of splicing for telecom professionals.
What is cable splicing?
Cable splicing is the joining of two fiber optic cables to make a permanent connection. Because of this, technicians use splicing to extend cables or fix broken fibers. To do it right, the process lines up the fiber cores carefully so light can pass without losing strength. This means splicing makes stronger connections than temporary connectors.
Future Market Insights shows that the cable splice closure market reached USD 2.9 billion in 2025, showing how common splicing is in telecom projects. Also, good splicing keeps signals strong across the network, which is important for fast and smooth data transfer.
How do you splice cables?
To splice cables, technicians prepare, clean, align, and join fiber ends. The process begins by getting the cable ends ready. Technicians take off the outer jacket from both cables. After removing the jacket, they clean the exposed fiber cores with special tools because the fibers need to be very clean to connect properly. When the fibers are clean, they line them up carefully using precise tools.
After alignment, the fibers are joined. Technicians use heat or pressure to fuse the fibers together. To protect the connection, they cover the splice with a case, keeping it safe from water and damage. Good cable splicing requires proper training and the right tools.
Key types of cable splicing and most reliable method
The two main types of cable splicing are fusion splicing and mechanical splicing. Each method has its own strengths and ideal use cases, which we’ll explore in detail below.
A. Fusion splicing
Fusion splicing uses heat to join fiber ends, which makes very strong and reliable connections. Because of this, it needs a special fusion splicer machine. This means signal loss is very low, usually less than 0.1 dB. For this reason, companies use fusion splicing for permanent setups. It is also the most reliable method. On top of that, modern fusion splicers work faster and cost less. They also line up fibers exactly, so light can travel without loss. That is why experts choose fusion splicing for long-distance networks and important projects.
B. Mechanical splicing
Mechanical splicing holds fibers together using a fixture. Also, a special gel inside the fixture helps light pass between fibers for proper splicing. It is cheaper than fusion splicing, but signal loss is a little higher, about 0.3 dB. Because of this, it works well for temporary connections or quick repairs.
Building strong networks
Strong networks depend on proper cable splicing. Companies need quality splicing to handle more data traffic. These techniques keep signals strong across fiber networks. Knowing these methods helps businesses plan better networks. Quality splicing reduces downtime and makes networks faster.
Dark fiber networks need skilled splicing everywhere. ARNet offers full dark fiber solutions across Southeast Asia. We serve large telecom operators and hyperscalers in Malaysia, Indonesia, Singapore, and Thailand. Our network is over 10,000 km long and uses AI-grade fiber. We provide long-haul connections between cities, metro fiber in towns, and last-mile fiber to users. Our team manages all parts of network setup, including expert cable splicing.
ARNet is the only provider in the region with all critical licenses. This allows smooth connectivity with one network. Our deployment process is fast and without interruptions. We guarantee over 99.99% uptime, using real-time monitoring to catch problems early. Choose ARNet for reliable dark fiber networks built with precise cable splicing and maintained by experts. Visit our website to learn more.
About the Author
Nabila Choirunnisa, Digital Marketing Executive at ARNet