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Filter response optimization for an arrayed waveguide grating device by adjusting grating optical path length at nanometer scale
Filter response optimization for an arrayed waveguide grating device by adjusting grating optical path length at nanometer scale
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机译:通过调整纳米尺度的光栅光路长度,优化阵列波导光栅器件的滤波器响应
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摘要
A method of optimizing a filter response of an arrayed waveguide grating is disclosed. The method includes the step of measuring a respective phase error of a plurality of waveguide cores of the arrayed waveguide grating. Once the phase error is measured, a respective optical path length of the cores is adjusted in accordance with the respective phase error of the cores. Optical path length is adjusted by adjusting a respective refractive index of the cores. The respective optical path length can be controlled to nanometer accuracies by adjusting the respective refractive index of the cores.
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