SN UPC Connector Polishing Fixture
Specially designed for polishing SN UPC connectors
Each connector is independently compressed, easy to load and unload
Stable 3D yield of>=95%
Adopting a multi-stage polishing process significantly reducing insertion loss.
SN UPC Polishing Fixture 36 Clamps
The main advantage of SN connectors is their high-density design. It uses two LC type ceramic plugs with an outer diameter of 1.25mm, and the spacing between the two plugs is only 3.1mm, much smaller than the 6.25mm spacing of traditional LC dual core connectors. This design allows for higher port density to be achieved in the same space, making it ideal for high-density cabling environments.
Key points about SN connector polishing
The SN connector end face geometry control:
Ensure that the curvature radius, vertex offset, core indentation, and other parameters of the pin body end face meet the standards (such as curvature radius 8-15mm, indentation ≥ 120nm).
Surface quality optimization:
Remove scratches and deteriorated layers on the end face through multi-steps (coarse → semi fine → fine → final polishing) to reduce roughness.
Compatibility adaptation:
It needs to be matched with SN connector fixtures and support dynamic pressure control (DPC) or independent pressure control (IPC) modes to avoid pressure fluctuations caused by cable tension.
Typical polishing Process Parameters
Grinding steps: Usually, a four step method (such as D9 → D3 → D1 → ADS) or a five step method (such as SC30/15 → D9 → D3 → D1 → ADS) is used. The polishing pressure range is 40-58N, and the time is 60-120 seconds. The higher the pressure and the shorter the time, the less vertex offset can be reduced, but it may increase core indentation. It is recommended to use 0.15 µ m diamond sandpaper during the precision polishing stage.
Key features of the SN polishing fixture
1. Excellent optical performance guarantee
Adopting a multi-stage polishing process (coarse to fine polishing), significantly reducing insertion loss (meeting IEC Grade A standards) and improving return loss performance. Optimize grinding pressure and time parameters to reduce end face scratches and deterioration layers, ensuring long-term stability.
2. Innovative polishing process
Innovative dual drive planetary design achieves dense and non repetitive trajectories through speed ratio adjustment, improving consistency and efficiency. Support quick replacement of abrasive paper, simplifying on-site operation processes.
3. Applicability to harsh environments
Made of high-quality precision processed stainless steel, robust and wear-resistant. The structural design enhances the ability to resist dust and debris, and adapts to the long-term use requirements in harsh environments such as industrial interconnection.
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