We demonstrate a novel type of miniature spectrometer based on a Fourier transform spectrometer(FTS)chip with a dense output array and a commercial photodetector(PD)array.The FTS chip has an output array cycle of 20μ...We demonstrate a novel type of miniature spectrometer based on a Fourier transform spectrometer(FTS)chip with a dense output array and a commercial photodetector(PD)array.The FTS chip has an output array cycle of 20μm and consists of 51 Mach–Zehnder interferometers(MZIs),and 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 experiment result shows that a free spectral range(FSR)from 489 nm to 584 nm and a retrieved spectral resolution of 3.5nm at 532nm are obtained.The achieved properties show that our spectrometer has the potential to outperform the best commercial compact one in terms of most performance indices.展开更多
基金supported in part by the National Natural Science Foundation of China(Nos.61535010and 61605172)in part by the Public Project of Zhejiang Province(No.2016C33074)the research fund from Zhejiang Lightip Electronics Technology Co.,Ltd
文摘We demonstrate a novel type of miniature spectrometer based on a Fourier transform spectrometer(FTS)chip with a dense output array and a commercial photodetector(PD)array.The FTS chip has an output array cycle of 20μm and consists of 51 Mach–Zehnder interferometers(MZIs),and 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 experiment result shows that a free spectral range(FSR)from 489 nm to 584 nm and a retrieved spectral resolution of 3.5nm at 532nm are obtained.The achieved properties show that our spectrometer has the potential to outperform the best commercial compact one in terms of most performance indices.
