Testing & Quality Control

At FIBLIT, we follow a comprehensive, multi-step testing and quality assurance workflow to ensure that every fiber-optic installation and fusion splice meets the highest standards for signal integrity, mechanical reliability, and long-term performance.

Step 1: Visual Inspection

End-face Inspection: Each fiber end-face is inspected using a high-magnification microscope or handheld inspection scope to detect defects such as scratches, chips, contamination, or air bubbles.

Pre-Splice Verification: Alignment marks, fiber cleanliness, and jacket stripping are verified prior to fusion to reduce splice errors and signal loss.

Step 2: Fusion Splice Quality Verification

Arc Calibration: Ensure fusion splicer settings (arc power, duration, mode) are optimized for the fiber type (single-mode or multi-mode).

Loss Estimation: Modern fusion splicers provide real-time splice loss estimation using built-in optical analysis algorithms.

Mechanical Integrity: Verify that the splice achieves sufficient tensile strength to withstand handling and environmental stress.

Step 3: Optical Testing

Insertion Loss Measurement: Using an optical power meter and light source, we measure the loss across each splice to ensure it meets project specifications (commonly <0.05 dB for single-mode splices).

OTDR Testing: A full-length fiber scan with an Optical Time-Domain Reflectometer identifies splice loss, back reflection, microbends, and fiber faults along the cable. OTDR traces are saved for documentation.

Back Reflection Analysis: Particularly critical in high-speed networks, reflection is measured to ensure compliance with IEEE/TIA standards.

Step 4: Environmental & Mechanical Stress Testing

Tensile Strength Test: Splice joints are subjected to controlled mechanical stress to verify structural durability.

Thermal Cycling: Where applicable, splices are tested under temperature variations to simulate field conditions and ensure stable optical performance.

Vibration & Shock Testing: For critical or outdoor deployments, joints are verified against vibration or handling-induced stress.

Tools: Tensile testers, environmental chambers

Step 5: Documentation & Certification

Detailed Reports: Each fiber segment and splice includes a report with measured insertion loss, OTDR traces, visual inspection images, and mechanical test results.

Traceability: All data is archived for network maintenance, troubleshooting, and certification purposes.

Compliance: Ensures installations meet IEEE, TIA/EIA, and ITU standards for optical fiber networks.

Benefits of FIBLIT’s Multi-Step Testing

Ultra-low splice loss and minimal back reflection

High mechanical reliability and environmental tolerance

Detailed, traceable documentation for all fiber installations

Compliance with international standards and best practices