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利用三维有限差分光束传输法 ( 3 D-FDBPM)对渐变折射率波导中自镜象效应进行分析与模拟 ,在此基础上 ,利用 K+ -Na+ 离子交换在国产 K9光学玻璃上制作了 1× 8多模干涉( MMI)光功分器 ,测试表明 ,该器件初步实现了光均分功能 .
The self-image effect in the graded-index waveguide was analyzed and simulated by the 3-D finite-difference beam transmission method (3 D-FDBPM). On the basis of this, K × -Na + ion exchange was used to fabricate 1 × 8 Multimode interference (MMI) optical power splitter, the test shows that the device initially achieved the light sharing function.