Abstract

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 20 μm 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 3.5 nm at 532 nm 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.

© 2019 Chinese Laser Press

Miniature Fourier transform spectrometer based on a fiber-tip interferometer

Chunyang Han, Hui Ding, Baojin Li, Lei Shi, and Haodong Xu
Opt. Express 30(9) 15134-15148 (2022)

Demonstration of a compressive-sensing Fourier-transform on-chip spectrometer

Hugh Podmore, Alan Scott, Pavel Cheben, Aitor V. Velasco, Jens H. Schmid, Martin Vachon, and Regina Lee
Opt. Lett. 42(7) 1440-1443 (2017)

Miniaturization of holographic Fourier-transform spectrometers

Nikolay I. Agladze and Albert J. Sievers
Appl. Opt. 43(36) 6568-6579 (2004)

On-chip Fourier transform spectrometers by dual-polarized detection

Huijie Wang, Zhongjin Lin, Qifeng Li, and Wei Shi
Opt. Lett. 44(11) 2923-2926 (2019)

Low temperature sensitivity on-chip Fourier-transform spectrometer based on dual-layer Si₃N₄ spiral waveguides

Liangjun Lu, Hongyi Zhang, Xin Li, Jianping Chen, and Linjie Zhou
Photon. Res. 11(4) 591-599 (2023)