Fabrication of 2D thin-film filter-array for compressive sensing spectroscopy. (April 2019)

• Record Type: Journal Article
• Authors: Kim, Cheolsun; Lee, Woong-Bi; Lee, Soo Kyung; Lee, Yong Tak; Lee, Heung-No
• Is Part Of: Optics and lasers in engineering. Volume 115(2019)
• Page Start: 53
• Page End: 58
• Publication Date: 2019-04
• Subjects: Spectroscopy -- Thin films -- Inverse problems -- Compressive sensing; Lasers in engineering -- Periodicals; Optical measurements -- Periodicals; Optics -- Periodicals; Lasers en ingénierie -- Périodiques; Mesures optiques -- Périodiques; Optique -- Périodiques; 621.36605
• DOI: 10.1016/j.optlaseng.2018.10.018
• Languages: English
• ISSNs: 0143-8166

Abstract

Highlights: We propose and design a practical way to fabricate a 2D filter-array for sensing spectroscopy. We fabricate a 2D thin-film filter-array for compressive sensing spectroscopy. We recover the LEDs/monochromatic light sources using a reconstruction algorithm and the fabricated filter-array. Abstract: We demonstrate 2D filter-array compressive sensing spectroscopy based on thin-film technology and a compressive sensing reconstruction algorithm. To obtain different spectral modulations, we fabricate a set of multilayer filters using alternating low- and high-index materials and reconstruct the input spectrum using a small number of measurements. Experimental results show that the fabricated filter-array provides compatible spectral resolution performance with a conventional spectrometer in monochromatic lights and LEDs. In addition, the fabricated filter-array covers a wide range of wavelengths with a single exposure.