Methods for Removing Optical Cable Coating

Optical cable coatings can be removed using mechanical, chemical, thermal, or non-contact methods, each tailored to the fiber type and coating material.Mechanical Stripping

Mechanical stripping involves using precision fiber strippers or blades to physically remove the coating from the fiber. This method is widely used for standard telecommunication fibers with acrylate coatings. Handheld or automated strippers can remove a defined length of coating (typically 30–40 mm) without nicking the glass cladding, and some tools allow mid-span “window stripping” for applications like fiber Bragg gratings . Coaxial and loose tube cable strippers are also available for larger buffer tubes and armored cables, with adjustable blades to prevent fiber damage .

Thermal Stripping

Thermal methods use controlled heat to soften or melt the polymer coating, allowing it to be removed cleanly. High-strength thermal mechanical strippers combine heat with mechanical blades to strip coatings like acrylate down to the 125 µm cladding diameter, which is ideal for fusion splicing . Thermal methods are precise and reduce the risk of mechanical damage.

Chemical Removal

Chemical stripping uses solvents or specialized cleaning agents to dissolve the coating. This is particularly useful for lightly cross-linked acrylate coatings or when preparing fibers filled with water-blocking gels. Solvents must be applied carefully with lint-free wipes to avoid swelling, delamination, or weakening of the fiber. Commonly tested agents include Fiber-Clean™, d'Gel, and HydraSol®, while harsh chemicals like ammonia, bleach, or paint remover should be avoided .

Non-Contact and Laser-Based Methods

Advanced techniques such as laser ablation or super-heated air/nitrogen bursts can remove coatings without physical contact. Laser ablation vaporizes the coating with high precision, while 3SAE's Burst™ Technology uses super-heated air to cleanly burst away acrylate coatings. These methods are ideal for high-strength applications, specialty fibers, or when avoiding mechanical stress is critical .

Best Practices

• Select the method based on coating type and fiber material to prevent damage.
• Avoid soaking fibers in solvents to prevent delamination.
• Use lint-free wipes and minimal solvent when chemical methods are applied.
• Practice proper alignment and controlled pull when using mechanical strippers.
• Ensure safety and ventilation when using thermal or chemical methods. By combining the appropriate technique with careful handling, optical fiber coatings can be removed efficiently while maintaining fiber integrity, preparing the cable for splicing, connectorization, or recoating .