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    • 6. 发明授权
    • Method of producing optical waveguide
    • 制造光波导的方法
    • US4410345A
    • 1983-10-18
    • US295069
    • 1981-08-21
    • Yuichi UsuiShigeo MuraiShiro KurosakiMinoru Watanabe
    • Yuichi UsuiShigeo MuraiShiro KurosakiMinoru Watanabe
    • C03B37/012C03B37/018C03B37/027C03C25/02
    • C03B37/018C03B37/01211C03B37/027C03B2205/08
    • The present invention relates to a method of producing an optical waveguide by melt-drawing a transparent glass rod which has been produced by collapsing a doped porous glass rod. The glass rod is doped with refractive index enhancing dopant materials by depositing said material on the surface of the micro-pores wherein a waveguide having higher mechanical strength and lower transmission loss is obtained upon drawing said glass rod to a fiber. The drawing is performed at a temperature very close to the melting point of the outermost portion of the rod without causing any overmelting and resultant bubbling in the core portion. The drawing process is facilitated by matching the viscosity and softening characteristics of the outer, lower refractive-index portion of the rod to that of the central higher-refractive-index portion.
    • 本发明涉及一种通过熔化拉伸透明玻璃棒来制造光波导的方法,所述透明玻璃棒是通过使掺杂的多孔玻璃棒折叠而制成的。 玻璃棒通过在微孔表面上沉积所述材料来掺杂折射率增强掺杂剂材料,其中在将所述玻璃棒拉到纤维上时获得具有较高机械强度和较低传输损耗的波导。 该图在非常接近杆的最外部分的熔点的温度下进行,而不会在芯部分中引起任何过度熔化和产生的起泡。 通过将棒的外部,较低折射率部分的粘度和软化特性与中央高折射率部分的粘度和软化特性相匹配来促进拉伸过程。