Fiberguide Industries (Stirling, NJ) offers a line of low and standard hydroxyl concentration (OH) plastic-coated silica fibers. The Anhydroguide™ and Superguide™ are low-cost optical fibers that provide UV and infrared transmissions. The Anhydroguide fiber is constructed of a pure fused silica core, made by reacting silicon tetrachloride with oxygen using a plasma arc. This ensures a low residual OH for excellent infrared transmission. Superguide's silica core is constructed in the same manner, but with an oxy-hydrogen flame instead of a plasma arc, which maximizes the fiber's UV transmission properties. They offer a high core-to-clad ratio and numerical aperture of 0.37.
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