敏感线圈的热非互易性是引起光纤陀螺温度漂移的重要因素之一，因而人们多采用四极对称技术（QAD）绕制光纤线圈。
The thermal nonreciprocity in sensing coil is one of sources induced temperature drift in FOG , so the fiber loop is usually wound by quadrupole(QAD) symmetrical technique.
导出了克尔非线性梯度折射率光纤轴对称模传播常数的解析公式。
The analytic formulas of propagation constants of axisymmetric modes in a Kerr law nonlinear graded index optical fiber are derived.
该法对任意的圆对称折射率剖面光纤计算传输常数和色散能够得到满意的结果。
Good result is achieved for the propagation constants and chromatic dispersion of arbitrary index profile single mode fiber.
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