Green silicon carbide (Green SiC / GC-SiC)for optical fiber array (FA) end-face precision lapping, fine grinding, pre-polishing & fiber connector polishing.It is used in FA polishing slurry / polishing film / polishing liquid for optical fiber V-groove arrays, PLC splitters, fiber pigtails and fiber array components.
Core Properties (Optical Grade FA Polishing)
- Chemical composition: SiC ≥99.0%
- Free carbon ≤0.20%, Fe₂O₃ ≤0.02% (ultra-low iron, no contamination, no dark spots on fiber end face)
- Mohs hardness: 9.2–9.5
- Excellent self-sharpening performance
- Sharp angular micro-crystalline particles
- Narrow particle size distribution, strictly controlled maximum large particles
- Good chemical stability, inert to quartz fiber glass & ceramic ferrule
- Low subsurface damage (SSD), low surface roughness
Key advantages for Fiber Array (FA) polishing
- Higher cutting efficiency than white alumina, fast removal of fiber end face damage layer
- Good friability → continuous sharp edges, no deep scratches on fiber end face
- Low thermal conductivity coefficient rise → no thermal deformation on FA V-groove glass substrate
- Uniform micro-cutting, ensures smooth fiber end face flatness, low Apex offset, low tilt
- Effectively remove grinding marks, suitable for FA pre-polishing before final mirror finish
Standard Grit Sizes for FA Fiber Array Polishing
| Process Step | Green SiC Grade | Particle Size | Application on Fiber Array | Target End-face Quality |
|---|---|---|---|---|
| Rough lapping FA end face | W10 / W7 | 7–10 μm | Remove cutting damage, flatten fiber end face | Remove deep pits & scratches |
| Semi-fine grinding FA | W5 / W3.5 | 3.5–5 μm | Fine planarization of fiber core & V-groove glass | Reduce roughness, eliminate coarse lines |
| Fine pre-polishing FA | W2.5 / W1.5 | 1.5–2.5 μm | Ultra-fine pre-polishing before mirror finish | Smooth end face, Ra＜0.02μm |
| Micro-precision finishing | W1.0 / W0.8 | 0.8–1.0 μm | High-end low-scratch FA polishing | Near-mirror base surface |
Application Fields
- Optical Fiber Array (FA) V-groove glass substrate polishing
- PLC optical splitter fiber array end-face processing
- Fiber connector, ferrule, pigtail end-face precision lapping
- Quartz glass fiber & optical component precision polishing slurry raw material
- FA polishing liquid, polishing suspension, abrasive film raw material