Drawing‐induced 1.53‐μm wavelength optical loss in single‐mode fibers drawn at high speeds

Optical loss at 1.53‐μm wavelength is observed in silica‐based single‐mode fibers drawn at high speeds. This loss, which is induced by high‐speed drawing, is attributed to silylidyne group absorption. It is found that silica glass fibers occasionally contain hydrogens associated with silicons in addition to hydroxyl groups.