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A MEMS Based Visible-NIR Fourier Transform Microspectrometer

机译:基于MEMS的可见近红外傅里叶变换显微光谱仪

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摘要

Design, fabrication and characterization of a novel out-of-plane vertical comb-drive actuator based Fourier transform microspectrometer (FTS) is presented. The spectrometer utilizes resonant mode vertical comb actuators as a variable-depth diffraction grating and a single photodetector to monitor the 0th order of the diffraction pattern. The spectrum of the source illuminating the gratings is computed by Fourier transforming the 0th order intensity as a function of the optical path difference. The vertical comb actuators have a travel range of 100μm under atmospheric pressure with 28V excitation, which yields a theoretical spectral resolution of 0.5nm in the visible and better than 5nm in the telecom wavelengths.
机译:介绍了一种新型的基于傅里叶变换显微光谱仪(FTS)的面外垂直梳状驱动致动器的设计,制造和特性。该光谱仪利用共振模式垂直梳状致动器作为可变深度衍射光栅和单个光电检测器来监测衍射图的0阶。通过将0阶强度作为光程差的函数进行傅立叶变换,可以计算出照射光栅的光源的光谱。垂直梳状致动器在大气压下具有28V激励时的行程范围为100μm,这在可见光下产生的理论光谱分辨率为0.5nm,在电信波长下产生的理论光谱分辨率优于5nm。

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