公开(公告)号：US07310974B2

公开(公告)日：2007-12-25

申请号：US10754904

申请日：2004-01-09

申请人： Sangeeta Mohanty ,  Nacham Sridhar ,  Salaj Sinha ,  Nitesh Gulati ,  Sthitadhi Das

发明人： Sangeeta Mohanty ,  Nacham Sridhar ,  Salaj Sinha ,  Nitesh Gulati ,  Sthitadhi Das

IPC分类号： C03B37/022

CPC分类号： C03B37/032 ,  C03B37/02745 ,  C03B2203/19 ,  C03B2203/20 ,  C03B2203/36 ,  C03B2205/06 ,  C03B2205/42 ,  G02B6/02285

摘要： A method for drawing an optical fiber having reduced polarization mode dispersion (PMD) draws an optical fiber from an optical fiber preform whose core ovality is at max about 3%, coats the optical fiber with acrylic polymer and twists the coated optical fiber with a pair of spinning wheels. The twisting of the fiber is achieved by four discrete spin rates that repeat in a periodic fashion after the drawing of certain lengths of the optical fiber. At least one of the spin rates varies in a trapezoidal manner along the respective one of drawn lengths of the optical fiber.

摘要翻译： 用于绘制具有降低的偏振模色散（PMD）的光纤的方法从其核心椭圆度为最大约3％的光纤预制棒拉制光纤，用丙烯酸聚合物涂覆光纤并用一对扭曲涂覆的光纤 的旋转轮。 纤维的扭曲是通过在拉伸一定长度的光纤之后以周期性方式重复的四种离散旋转速率实现的。 旋转速率中的至少一个沿着光纤的拉伸长度的相应的一个梯形方式变化。