本文提出了一种新型的宽角度等功率分配三分支波导结构，此结构包含三个高折射率微棱镜。
A novel wide-angle three-branch optical waveguide with equal power division is proposed, which contains three high-index microprisms.
由于熔接型侧面耦合器无须折射率匹配介质，因此能够承受很高的抽运光功率密度。
This kind of fused side-coupler can endure high-power light for it is without index-matching materials.
非线性折射率与泵浦平均功率的平方成正比。
Nonlinear refraction index change is proportional to square of mean pump power.
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