Understanding MTP/MPO MT Polishing Film and Polishing Process

Understanding MTP/MPO MT Polishing Film and Polishing Process

MTP/MPO connectors are widely used in high-speed data centers, 5G networks, and fiber optic communication systems, requiring precise polishing to ensure low insertion loss, high return loss, and reliable optical performance. Proper selection of polishing films and adherence to a structured polishing process are essential for achieving optimal results.

🔹 What is MTP/MPO MT Polishing Film?

MTP/MPO polishing films are precision-coated films designed to refine and smooth the MT ferrule surfaces of multi-fiber connectors. These films are available in various abrasive types and micron sizes to accommodate different polishing stages.

📌 Key Types of Polishing Films for MTP/MPO Connectors:

1️⃣ Diamond Polishing Film – Used for aggressive material removal and precise fiber height adjustment.
2️⃣ Silicon Carbide Polishing Film – Provides controlled polishing for ferrule and fiber end-face preparation.
3️⃣ Aluminum Oxide Polishing Film – Ideal for refining fiber surfaces and minimizing scratches.
4️⃣ Final Polishing Film (Silicon Dioxide, Flocked Film) – Ensures a smooth, high-gloss finish with optimal fiber geometry.

🔹 MTP/MPO Connector Polishing Process

A structured polishing process ensures consistency, repeatability, and industry-standard performance. Below is the step-by-step guide to MTP/MPO polishing:

📍 Step 1: Epoxy Removal & Ferrule Leveling

✅ Film Type: SC15B (15µm Silicon Carbide Film)
✅ Purpose: Removes excess epoxy, levels the ferrule, and exposes fiber ends evenly.

📍 Step 2: Pre-Polishing

✅ Film Type: SC3D (3µm Silicon Carbide Film)
✅ Purpose: Refines the ferrule surface and adjusts fiber protrusion for precise geometry.

📍 Step 3: Final Polishing

✅ Film Type: SC1A (1µm Silicon Carbide Film)
✅ Purpose: Achieves Geometry, Core Dip and Fiber Height Value, finer polishing, reducing surface roughness and enhancing uniformity.

📍 Step 4: Ultra-Fine Polishing

✅ Film Type: CE0.5B (0.5µm Silicon Dioxide Final Polishing Film)
✅ Purpose: Provides a smooth, high-quality fiber-end finish, ensuring excellent optical performance.

🔹 Recommended Polishing Parameters:

🔹 Polishing Pressure: 5.5 - 15.5 psi
🔹 Rotation Speed: 80-120 RPM
🔹 Polishing Time: 30-60 sec per step
🔹 Fixture: MT/MPO polishing jig with precise alignment

🔹 Troubleshooting Common Polishing Issues:

❌ High Insertion Loss? ➝ Check polishing pressure, film usage, and ensure even ferrule contact.
❌ Scratches or Defects? ➝ Use clean polishing films, maintain a dust-free environment, and replace worn-out jigs.
❌ Fiber Undercut or Protrusion? ➝ Adjust polishing parameters and ensure correct ferrule alignment.

🔹 Why Choose XYT Polishing Films for MTP/MPO Polishing?

✅ Consistent and repeatable polishing performance
✅ Wide range of polishing films for different stages
✅ Long-lasting durability with precise abrasive coating
✅ Compatible with industry-standard MPO/MTP polishing machines

For expert technical support and high-quality polishing solutions, contact us at:
📩 sales@xytbrands.com
📞 +86-15702088819

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