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.

youdao

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.

youdao