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本文对熔锥型非对称耦合器进行了理论分析，理论分析表明，这种耦合器具有波长响应平坦的特性，且这个结果能与实验较好地符合。
In this paper, the theoretical analysis of the fused-cone asymmetric coupler has been carried out. The theoretical analysis shows that the coupler has the characteristic of smooth wavelength response and the result is in good agreement with the experiment.