Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/214978
Title: PERFORMANCE ENHANCEMENT OF ENCODING-BASED SINGLE-PIXEL SPECTROMETERS
Authors: ZHOU GUANGCAN
Keywords: Single-pixel, spectrometer, encoding-based, mutiplexing, MEMS, performance enhancement
Issue Date: 18-Aug-2021
Citation: ZHOU GUANGCAN (2021-08-18). PERFORMANCE ENHANCEMENT OF ENCODING-BASED SINGLE-PIXEL SPECTROMETERS. ScholarBank@NUS Repository.
Abstract: Optical spectrometers have received increasing research and industry attention due to their capability for materials characterization and spectral analysis in different fields, such as chemistry, biology, and medicine. Encoding-based single-pixel spectrometer is a crucial type of spectroscopic system considering its ability for miniaturization. In this thesis, we propose three different single-pixel spectrometers with enhanced performance compared with current encoding-based spectrometers. The first MEMS spectrometer uses compressive sensing theory to design the encoding patterns capable of reconstructing a higher-dimensional signal with fewer measurements, thus enhancing the achievable resolution. The second spectrometer innovatively implements a random Bernoulli patterns to further reduce the required number of measurements for a given dimensional signal. This spectrometer also shows potential in sensing a broadband spectrum. The third spectrometer is a near-infrared spectrometer designed with a wide aperture to improve its optical throughput, thus enhancing its SNR without sacrificing its resolution.
URI: https://scholarbank.nus.edu.sg/handle/10635/214978
Appears in Collections:Ph.D Theses (Open)

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