Fluorine-doped fused silica tubes FST
FST fused silica tubes were developed to provide special fiber manufacturers with a reliable source for Fluorine-doped high performance tubes.
FST is the perfect basis for preform design, as it meets the particular requirements of special fiber manufacturers. FST tubes contain highest Fluorine concentrations of 4wt. % and resulting in a negative refraction index delta of (17 Å}3) °ø 10-3. We offer FST with numerical apertures (NA) of up to 0.22 (compared to pure fused silica) and with low OH content (<20 ppm) as uniformly doped tubes as well as customer-specific variations. These allow easy finishing and processing in preforms or capillaries.
- Inner Tube Diameter (I.T.): 20-40 mm
- Material Composition: SiO2 /F
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