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本文根据标量波动方程,导出了色散公式及波导色散和模场直径间的关系。对掩模法进行了公式推导及相关参数的分析确定,并对掩模法所能引起的误差进行了估算。最后,实现了掩模法对单模光纤色散的测量。
According to the scalar wave equation, the relationship between dispersion formula and waveguide dispersion and mode field diameter is derived. The derivation of the mask method and the analysis of the relevant parameters are made. The errors caused by the mask method are also estimated. Finally, the masking method is used to measure the dispersion of single mode fiber.