Optical Fiber Stripping Process

Optical fiber should be stripped using precision tools designed to remove coatings without damaging the glass core, employing mechanical, thermal, or chemical methods depending on the fiber type and application.Mechanical StrippingMechanical stripping is the most common method and involves using handheld fiber strippers with precision notches calibrated for specific coating diameters. These tools remove the buffer and acrylate coatings down to the 125 µm glass cladding without nicking or scratching the fiber . Typical steps include:Strip the outer jacket first, followed by aramid yarn and buffer layers progressively .Use three-hole strippers for multi-layer coatings: one notch for the outer jacket, one for the tight buffer, and one for the primary acrylate coating .Ensure the blades are smooth and properly sized to avoid contact with the glass core .For small-diameter fibers or specialty fibers, select strippers with appropriately sized holes or adjustable settings .Thermal StrippingThermal or heated stripping tools soften the polymer coating, making it easier to remove without mechanical stress. This method is particularly useful for tight-buffered fibers or when working with delicate coatings . Key points:Apply controlled heat to soften the coating.Use a fiber gripper to hold the fiber securely while sliding off the softened coating.Avoid overheating, which can damage the fiber or alter its optical properties .Chemical and Plasma StrippingChemical solvents or plasma methods are used in specialized applications, such as removing polyimide coatings or preparing fibers for research-grade experiments . These methods are less common in field installations but provide a non-contact approach that minimizes mechanical stress.Best PracticesAlways strip fibers progressively, layer by layer, rather than attempting to remove all coatings at once .Use a fiber gripper or textured rubber holder to prevent microfractures during stripping .Inspect the stripped fiber under magnification to ensure a clean, straight cut without jagged edges or residual coating .Replace worn blades regularly to maintain precision and prevent fiber damage .For automated or high-volume operations, consider automated stripping machines for consistent and repeatable results . By following these methods and using the appropriate tools, technicians can ensure high-quality fiber preparation, reducing signal loss and improving the reliability of splicing or connectorization processes .