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对采用BK7玻璃并经过K+ Na+ 二次离子交换法制备的波导 ,用数值求解分析了一次和二次离子交换所形成的折射率分布 ,并分析了影响折射率变化的原因。
The waveguides prepared by BK7 glass and prepared by K + Na + secondary ion exchange method were analyzed by numerical solution to analyze the refractive index distribution formed by primary and secondary ion exchange, and the reason of the change of refractive index was analyzed.