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Wavelength filtering characteristics of Solc filter based on Ti:PPLN channel waveguide

机译:基于Ti:PPLN通道波导的Solc滤波器的波长滤波特性

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We have analyzed the Solc filtering characteristics in a periodically poled Ti:LiNbO_(3) (Ti:PPLN) multimodewaveguide. The single- and dual-wavelength filtering were achieved under the optimized guiding condition for the TEM_(00)-like mode and two mode (TEM_(00)- and TEM_(01)-like mode), respectively. The full width at half-maximum of the filter was about 0.21 nm at both guiding conditions. We found that the origin of two peaks of the dual-wavelength Solc filter in the two-mode guiding condition is the different effective refractive index between the TEM_(00)- and TEM_(01)-like modes. The wavelength difference of two peaks is about 0.8 nm at room temperature.
机译:我们分析了周期性极化的Ti:LiNbO_(3)(Ti:PPLN)多模波导中的Solc滤波特性。在优化的引导条件下,分别针对类TEM_(00)模式和两种模式(类TEM_(00)和TEM_(01)模式)实现了单波长和双波长滤波。在两个引导条件下,滤光片的半峰全宽约为0.21 nm。我们发现,在双模引导条件下,双波长Solc滤波器的两个峰值的起源是类TEM_(00)和TEM_(01)模式之间不同的有效折射率。在室温下,两个峰的波长差约为0.8 nm。

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