Miniature Spectrometer Based on Fourier Transform Spectrometer Chip and Commercial Photodetector Array
We demonstrate a novel type of miniature spectrometer based on a Fourier transform spectrometer (FTS) chip with dense output array and a commercial photodetector (PD) array. The FTS chip has an output array cycle of 20 μm and consists of 51 Mach-Zehnder interferometers (MZIs), the PD array is a commercial linear charged coupled device (CCD). An achromatic triplet lens is used to image the MZI output interferogram onto the CCD with a small aberration. Our experimental result shows that a free spectral range (FSR) from 489 nm to 584 nm and a retrieved spectral resolution of 3.5 nm at 532 nm are obtained. The achieved properties shows that our spectrometer has the potential to outperform the best commercial compact one in terms of most performance indices.
作者单位：Zhejiang University of Technology
Zhejiang Lightip Electronics Technology Co., Ltd
Ma Xiao,Zou Jun,Li Wenhuan,He Jian-Jun. Miniature Spectrometer Based on Fourier Transform Spectrometer Chip and Commercial Photodetector Array[J].Chinese Optics Letters,2019,17(12):12.