Fiber optic cable stripping must follow precise standards and best practices to expose the glass fiber without causing damage, ensuring reliable signal transmission and safety compliance.

Industry Standards

Fiber optic stripping is guided by both formal standards and best-practice guidelines. Key references include:

• FOA Standards: The Fiber Optic Association (FOA) provides standards for fiber optic installation and handling, including stripping procedures, emphasizing proper tool use, layer-by-layer removal, and safety precautions to prevent fiber damage or personal injury .
• NASA Workmanship Standard (NASA-STD-8739.5A): Specifies requirements for fiber optic terminations and cable assemblies, including stripping techniques, acceptable tolerances, and inspection methods to ensure high-quality optical connections .
• Manufacturer Guidelines: Companies like Corning provide detailed procedures for ribbon and multi-fiber cables, specifying strip lengths, layer handling, and protective measures for the fiber core .

Stripping Techniques and Tools

Proper stripping involves removing coatings and jackets without nicking or scratching the glass fiber:

• Layer-by-Layer Stripping: Multi-layer cables must be stripped progressively, with each layer removed to the specified length using appropriate tools .
• Fiber Strippers: Precision tools are used to remove coatings cleanly. These include:
  • Mechanical strippers: Handheld or automated tools with calibrated blades for standard 125 µm cladding fibers .
  • Thermal strippers: Heat softens the buffer for easier removal without touching the glass .
  • Specialty strippers: For tight buffers (900 µm) or plastic optical fibers, with hole sizes and settings adjusted for fiber diameter .
• Inspection and Testing: After stripping, fibers are often subjected to a 45-degree bend test to detect nicks or micro-cracks that could compromise performance .

Safety and Maintenance

• Personal Protection: Always wear safety glasses and handle fibers carefully to avoid injury from sharp glass fragments .
• Tool Maintenance: Replace dull blades promptly; worn tools can stress or damage fibers, leading to connector failure .
• Chemical and Fire Safety: Follow manufacturer instructions when using solvents or heat, as some coatings are flammable or irritant .

Best Practices

• Strip only the required length for the connector or termination.
• Ensure cuts are straight and clean, avoiding jagged edges.
• Use automated tools where possible for repeatability and consistency.
• Verify stripped fibers visually or with bend tests before connectorization. By adhering to these standards and techniques, fiber optic cable assemblies maintain signal integrity, reliability, and compliance with industry requirements.