How to Make Ribbon Fiber from Loose Fibers: FSM-100 Guide
Making ribbon fiber from loose bare fibers can be slow and inconsistent when the fibers are not aligned correctly. The FSM-100 Fiber Ribbonizing Tool, also called a fiber arrangement tool or ribbonize tool, helps arrange individual fibers in standard color-code order and hold them securely in a flat ribbon configuration.
This makes fiber preparation easier for ribbon fusion splicing in FTTH, data center, backbone, trunk, and telecom maintenance projects.
Quick answer: A fiber ribbonizing tool positions loose single-core fibers side by side, keeps them aligned in the correct color sequence, and helps maintain a stable ribbon shape before fusion splicing. The FSM-100 is available in 12-core and 16-core configurations.
View the FSM-100 Fiber Ribbonizing Tool
Why use a fiber ribbonizing tool?
Without a suitable arrangement tool, loose fibers can become tangled, change position, or separate during preparation. The FSM-100 helps technicians arrange fibers in standard color-code order, convert loose single-core fibers into an organized ribbon, improve positioning consistency, and prepare 12-core or 16-core ribbon fiber more efficiently.

How to make ribbon fiber with the FSM-100
- Select the correct 12-core or 16-core FSM-100 model for the splicing job.
- Prepare the loose single-core fibers and confirm that the fiber coating is compatible.
- Place the fibers into the arrangement tool in the standard color-code sequence.
- Align the fibers so they sit evenly and form a flat ribbon.
- Secure the fibers with the tool’s clamping mechanism.
- Check the alignment before transferring the prepared ribbon fiber to a compatible ribbon fusion splicer.
The tool is designed for standard 250 µm and 900 µm coated fibers. Always check the fiber condition and alignment before clamping. Correct positioning helps reduce handling errors, but the tool should be used carefully to avoid excessive pressure on the fibers.

12-core vs. 16-core ribbon fiber
Choose the 12-core version when the project uses 12-fiber ribbon arrangements. Choose the 16-core version for higher-density fiber preparation and 16-core ribbon fusion splicing workflows. The correct choice depends on the fiber count, ribbon splicer, and network design.
Where is the FSM-100 used?
- FTTH network installation
- Data center fiber infrastructure
- Backbone and trunk cable splicing
- Telecom network upgrades and maintenance
- Fiber factories and production environments
- Field technicians preparing ribbon fiber for mass fusion splicing

FSM-100 operation video
Watch the fiber arrangement demonstration to see how loose fibers are positioned and prepared for ribbon splicing.

Frequently asked questions
What is a fiber ribbonizing tool?
A fiber ribbonizing tool arranges multiple loose single-core fibers into a flat, organized ribbon so they can be prepared for ribbon fusion splicing.
Is the FSM-100 available for 12-core and 16-core fiber?
Yes. The FSM-100 is available in both 12-core and 16-core versions.
What fiber coatings are compatible with the FSM-100?
The product is designed for standard 250 µm and 900 µm coated fibers.
Can I use the FSM-100 for FTTH and data center work?
Yes. It is suitable for FTTH, data center, backbone, trunk, factory, and telecom maintenance applications.
Does the FSM-100 replace a ribbon fusion splicer?
No. It is an arrangement accessory used to prepare loose fibers before working with a compatible ribbon fusion splicer.
Conclusion
For technicians who need to turn loose single-core fibers into an organized ribbon, the FSM-100 provides a compact and practical way to improve fiber positioning and preparation efficiency. Select the 12-core or 16-core version according to your fiber arrangement and ribbon splicer requirements.