XYT High-Precision MTP Lapping Polishing Film

Advanced Polishing Media for MPO/MTP® Connector End-Face Precision

1. Introduction

As high-density fiber optic interconnects become the backbone of data centers, 5G networks, and cloud infrastructure, MPO/MTP® connector end-face quality has become a critical determinant of optical performance. Parameters such as insertion loss (IL), return loss (RL), fiber height consistency, and scratch control are directly influenced by the polishing media used in production.

XYT High-Precision MTP Lapping Polishing Film is engineered specifically for these demanding requirements. By combining tight abrasive grading, optimized film backing, and controlled binder systems, XYT delivers a stable, repeatable polishing solution for mass-production and high-precision fiber optic manufacturing.

2. Product Overview

XYT MTP lapping polishing film is a flexible, abrasive-coated film designed for controlled material removal on MTP ferrules made from glass-filled epoxy, PPS, ceramic-loaded polymer, and MT ferrule composites.

The film is compatible with manual, semi-automatic, and fully automated MTP polishing machines, supporting both PC and APC end-face geometries.

3. Abrasive System & Material Engineering

3.1 Abrasive Types

XYT MTP polishing films utilize carefully selected abrasive systems depending on polishing stage:

Each abrasive is precision-classified by micron size, ensuring uniform scratch depth and predictable removal rates across the entire ferrule surface.

4. Film Backing & Construction

4.1 PET Film Backing

• High-strength PET substrate

• Excellent dimensional stability under pressure

• Uniform thickness tolerance

• High tear resistance for automated polishing

This flexible backing allows the film to conform evenly to the MTP ferrule array, minimizing fiber-to-fiber height variation and edge roll-off.

4.2 Binder & Coating Uniformity

• Controlled resin hardness for stable abrasive release

• Low particle shedding

• Consistent abrasive exposure throughout film life

• Clean polishing behavior with minimal debris accumulation

5. Technical Specifications (Typical)

6. Recommended MTP Polishing Process

Standard XYT MTP Polishing Sequence

SC15D → SC3D → SC1A → CE0.5B

6.1 SC15D – Coarse Lapping

• Removes epoxy residue and ferrule molding marks

• Establishes initial ferrule geometry

• High material removal rate

6.2 SC3D – Intermediate Refinement

• Eliminates deep scratches from coarse stage

• Improves surface flatness and fiber exposure consistency

• Prepares surface for fine polishing

6.3 SC1A – Fine Polishing

• Reduces surface roughness to sub-micron level

• Controls micro-scratch orientation

• Critical for fiber height uniformity

6.4 CE0.5B – Final Optical Polishing

• Ultra-fine surface smoothing

• Chemical-mechanical interaction with glass fibers

• Achieves low IL and high RL performance

7. Performance Impact on Optical Parameters

7.1 Insertion Loss (IL)

• Smooth fiber end faces

• Uniform fiber protrusion

• Reduced scattering losses

7.2 Return Loss (RL)

• Minimized surface defects

• Improved fiber-to-fiber consistency

• Optimized end-face geometry

7.3 Yield & Repeatability

• Stable polishing window

• Reduced operator sensitivity

• High pass rate in mass production

8. Process Control Recommendations

• Use dedicated film per polishing stage (no cross-contamination)

• Maintain consistent pressure and rotation speed

• Replace film based on surface wear indicators, not time alone

• Clean ferrules between each polishing step

• Inspect end faces using 3D interferometry or fiber-scope analysis

9. Application Scope

• MPO/MTP® PC & APC connectors

• High-density data center cabling

• Telecom and FTTH assemblies

• Factory mass-production polishing lines

• Precision rework and repair processes

10. XYT Manufacturing Advantage

With 30+ years of abrasive and lapping film engineering experience, XYT controls the entire process—from abrasive selection and micron classification to coating, curing, and inspection. This vertical integration ensures:

• Batch-to-batch consistency

• Custom grit sequences for different ferrule materials

• Stable supply for long-term production programs

11. Conclusion

XYT High-Precision MTP Lapping Polishing Film is not simply a consumable—it is a process-critical component that directly defines optical performance, yield, and manufacturing stability. Through precise abrasive engineering, optimized film construction, and proven polishing sequences, XYT enables fiber-optic manufacturers to meet the most demanding MPO/MTP performance standards with confidence.