Silica/hard polymer clad optical fiber Fiberguide Industries

With numerical aperature (N.A.) of 0.39 and a hard polymer cladding that allows a high core-to-clad ratio, the Anhydroguide™ APCH is the low cost fiber of choice. The pure fused silica (SiO2) used in the core of Anhydroguide™ fiber is made by reacting silicon tetrachloride (SiCl4) with oxygen (O2) using a plasma arc rather than an oxy-hydrogen flame. This ensures that the residual hydroxyl concentration (OH) will be low in the core material resulting in superior infrared transmission as compared with flame prepared silica that is used in the
companion product, Superguide™, which has superior ultraviolet (UV) transmission.

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