Research Progress on On-Chip Fourier Transform Spectrometer,Laser & Photonics Reviews

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Research Progress on On-Chip Fourier Transform Spectrometer
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2021-07-09 , DOI: 10.1002/lpor.202100016
Lichao Zhang _{1,

2} , Jiamin Chen _{1,

2} , Chaowei Ma _{2,

3} , Wangzhe Li _{2,

3} , Zhimei Qi _{1,

2} , Ning Xue _{1,

2}

Affiliation

A Fourier transform spectrometer (FTS) is recognized as a highly precise analytical instrument for analyzing the constituent elements of matter in the fields of physics, chemistry, aerospace, and so on. With the emergence and development of miniaturized and portable devices in numerous scientific and technological fields, there has been an urgent need for on-chip FTSs due to their benefits of small size, portability, low energy consumption, and robustness. However, the small size of on-chip FTSs hinders the acquisition of a large optical path difference, resulting in a low resolution of the spectrometer. In addition, the sampler spacing is not sufficiently small to satisfy Nyquist's sampling theorem, directly influencing the bandwidth of the spectrometer. Therefore, studies have been performed to investigate the trade-off between the reduced size and performance of spectrometers. This paper aims to systematically review the progress in on-chip FTSs, especially in on-chip static FTSs, including spatially modulated, temporally modulated, and space-time comodulated FTSs, from the aspects of theories, implementations, and performance indicators. Finally, the paper ends with a discussion of the challenges and a view of the prospective development of this exciting field.

中文翻译：

片上傅里叶变换光谱仪的研究进展

傅里叶变换光谱仪（FTS）是物理、化学、航空航天等领域公认的分析物质组成元素的高精度分析仪器。随着众多科技领域中小型化和便携设备的出现和发展，片上FTS由于具有体积小、便携、低能耗和鲁棒性等优点，迫切需要。然而，片上 FTS 的小尺寸阻碍了大光程差的获取，导致光谱仪的分辨率低。此外，采样器间距不够小，无法满足奈奎斯特采样定理，直接影响光谱仪的带宽。所以，已经进行了研究以研究光谱仪的减小尺寸和性能之间的权衡。本文旨在从理论、实现和性能指标等方面系统地回顾片上 FTS 的进展，特别是片上静态 FTS，包括空间调制、时间调制和空时共调 FTS。最后，论文最后讨论了这一令人兴奋的领域的挑战和前景。

更新日期：2021-09-16

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