Fiber Optic Patch Cord Stripper Principle

Fiber optic patch cord strippers work by precisely removing the protective polymer coatings from optical fibers without damaging the delicate glass core, using mechanical, thermal, or specialized non-contact methods.

Principle of Operation

Fiber optic strippers are designed to expose the bare glass fiber by removing the polymer coatings, such as acrylate, silicone, or polyimide, while maintaining the integrity of the 125 µm glass cladding beneath the coating . The core principle is controlled precision cutting or softening of the coating so that it can be removed cleanly:

• Mechanical Stripping: Uses precision-ground blades or notches that match the fiber diameter. The fiber is inserted into the correct slot, and the coating is sliced along its length. The tool ensures the blade only contacts the coating, preventing scratches or nicks on the glass .
• Thermal Stripping: Applies controlled heat to soften the coating, allowing it to be peeled away gently. This method is often used for sensitive fibers or in laboratory settings where minimal mechanical stress is required .
• Non-Contact Methods: Include chemical or plasma-based stripping, which remove coatings without direct mechanical contact, reducing the risk of microfractures.

Key Components and Features

• Precision Slots or Notches: Sized to the fiber's coating diameter to ensure a clean strip without damaging the core .
• Fiber Guides: Align the fiber accurately to the blade or heating element for consistent stripping.
• Color-Coded Blades: Facilitate quick identification of the correct tool for different fiber diameters and coating types .
• Grippers or Holders: Secure the fiber during stripping to prevent bending or microfractures .

Operational Considerations

• Measure and mark the required strip length according to connector or splicing specifications .
• Maintain a 90-degree angle between the fiber and the stripper for optimal control .
• Clean the stripped fiber with high-purity alcohol or dedicated fiber cleaners to remove residue .
• Inspect and maintain the stripper regularly to avoid contamination or blade wear, which can damage fibers .

Applications

Fiber optic strippers are essential for fusion splicing, connectorization, and patch cord assembly, ensuring low insertion loss and reliable optical performance . Using improper tools, such as generic wire strippers, can cause nicks, scratches, or stress fractures, leading to signal loss and connection failure. In summary, the principle of a fiber optic patch cord stripper is to provide a controlled, precise, and repeatable method to remove protective coatings while preserving the integrity of the glass fiber, using mechanical, thermal, or specialized non-contact techniques.