OF-140-N: Optical Fiber Coating
OF-140-N is a low refractive index optical fiber coating, developed for the cladding of optical fibers. The material is designed to be compatible with Optical fiber Drawing Towers.
The extension N denotes there is No adhesion promoter in the formulation. This allows a longer shelf life, but adhesion under wet conditions is lower.
Properties
| Liquid state | |
| RI liquid at 589 nm | 1.394 |
| Density, g/cm3 | 1.44 |
| Viscosity, cps @ 25°C | 3300 |
| Cured state | |
| RI cured at 589 nm | 1.407 |
| RI cured at 950 nm | 1.401 |
| Adhesion to fused quartz, 90° Peel, g/cm | 130 |
| Elastic modulus, MPa | 250 |
| Tensile Strength, MPa | 10 |
| Elongation at Break, % | 35 |
The product is supplied pre-filtered to below 1 micron particles.
Storage
- Avoid unnecessary exposure to ambient light and moisture.
- Long-term storage should be at ambient conditions of 10-30ºC.
- The coating is supplied in glass bottles. Keep the container closed to avoid moisture penetration.
- The shelf life is 12 months.
Application
OF-140-N is intended to be used in optical fiber drawing towers. The UV curing is done under nitrogen. Typically, a dose of 1000-2000 mJ/cm2 is necessary. Any UV source in the 300-400 nm range can be used. When properly cured under nitrogen, the surface should be non-tacky.
Keep the bottle closed at all times when not in use. The material is sensitive to light.
Safety: Refer to the SDS
Note: The above information is believed to be reliable, but it is not to be taken as a representation, warranty, or guarantee. Customers should perform their own QC, QA, and evaluation tests.
Updated: October 16, 2023
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