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Furnace chemical vapor deposition (FCVD) method for special optical fibers fabrication

机译:用于特殊光纤制造的炉化学气相沉积(FCVD)方法

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摘要

The features of the Furnace Chemical Vapor Deposition (FCVD) method of manufacturing preforms for special optical fibers are considered. It is shown that misalignment of substrate silica tube and furnace hole axes has a negative effect on the quality of fabricated preforms, leading to angular and radial asymmetry of the refractive index profile. Ways of getting rid of this and other disadvantages of the FCVD method are described. Some advantages of the FCVD method over the MCVD method are shown. It was demonstrated that the FCVD method, despite some drawbacks, allows to manufacture high-quality fiber preforms with good symmetry of the refractive index profile, and thus it is promising for fabrication of dispersion, dispersion varying and active fibers.
机译:考虑了用于特殊光纤预制棒的熔炉化学气相沉积(FCVD)方法的特点。结果表明,基底二氧化硅管和炉孔轴线的未对准对预制棒的质量有负面影响,从而导致折射率分布的角度和径向不对称。描述了消除FCVD方法的此缺点和其他缺点的方法。显示了FCVD方法相对于MCVD方法的一些优点。事实证明,尽管有一些缺点,FCVD方法仍可以制造出具有良好折射率对称性的高质量纤维预成型坯,因此,对于制造色散,色散变化和活性纤维是有希望的。

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