Silica fiber optic quality

Fabrication of Large Near Net Shapes of Fiber Optic Quality Silica 27... 

Figure 12.23. Schematic of Kaiser Mark II fiber-optic probe head. A holographic diffraction grating and pinhole act to remove silica scattering from the laser light and improve beam quality by spatial filtering. (Adapted from Reference 1 with permission.)...

Particle chemical composition is of toxicological concern, and this is reflected in limits on occupational exposures, air pollution emission standards, and ambient air quality standards, Careful control of aerosol chemiciil properties is also a central feature in commercial processes such as the fabrication of optical fibers in which a silica aerosol produced by the... 

Vitreous silica optical fibers for modern telecommunication systems must be made from ultrapure materials. Glasses produced from melts are incapable of reaching the quality levels required by these fibers. The glasses used in current fibers are produced in situ as the preform is formed by vapor deposition processes. Since the raw materials are liquids, purification by distillation can radically reduce impurity contents. Furthermore, since the glass never contacts crucible or refractory materials, the purity of the glass is maintained throughout the process. 

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