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Design and Analysis of Dual-resonant Filters in Visible and Infra-red Region Based on Polymer LPWG

机译:基于聚合物LPWG的可见和红外区域双谐振过滤器的设计与分析

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Long-period waveguide gratings (LPWGs), by using a SU-8 polymer-based channel waveguide along with NOA61 optical epoxy coated upper- and lower-cladding, are designed and theoretical analyzed. Grating period of ~ 68μm is considered with optimized grating tooth-heights, so that the transmission spectra of the gratings show strong rejection bands both at visible (450 - 460 ran) and infrared (1530 - 1540 nm) wavelength regions. Phase-matching graphs are studied in order to observe the change in resonance wavelength of the grating with the variation of waveguide parameters. LPWG-based band pass filter are also designed and analyzed by considering the same set of polymer materials. Further, temperature sensitivity of these LPWGs is analyzed theoretically. These types of waveguide grating-based filters can widely be used for visible and infrared wavelength sensing applications.
机译:通过使用SU-8聚合物基通道波导以及NOA61光学环氧树脂涂覆的上层和下包层,设计和理论分析了长时间波导光栅(LPWGS)。使用优化的光栅齿高度考虑〜68μm的光栅周期,使得光栅的透射光谱显示在可见(450-460RAN)和红外(1530-1540nm)波长区域处的强烈抑制带。研究了相位匹配的图表,以观察光栅的谐振波长的变化与波导参数的变化。通过考虑相同的聚合物材料,还设计了基于LPWG的带通滤波器。此外,从理论上分析了这些LPWG的温度敏感性。这些类型的波导光栅滤光器可广泛用于可见光和红外波长感测应用。

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