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本文直接从光射线轨迹方程出发,数值求解任意折射率GRIN棒中射线轨迹,从而得到最低插入损耗下的最佳结构参量。文中详细介绍波分复用器结构参量的优化设计方法。该法也适合于GRIN棒型其它光纤无源器件。设计值与实验值一致性较好。
In this paper, the trajectory of GRIN rod with arbitrary refractive index is numerically solved directly from the ray-ray trajectory equation to obtain the best structural parameters with the lowest insertion loss. In this paper, the optimal design method of wavelength division multiplexer structure parameters is introduced in detail. The law is also suitable for GRIN rods other optical passive devices. The design value is in good agreement with the experimental value.