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Proceedings Paper

A MEMS-driven Hadamard transform spectrometer
Author(s): Yu Du; Guangya Zhou
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Paper Abstract

We report a miniaturized spectrometer based on Hadamard transformation. The compact spectrometer utilizes a single-pixel photodetector and thus can operate at any wavelengths at relatively low cost. The spectrometer utilizes a MEMS-driven moving mask to encode the light intensity at its imaging slit, and the encoded light is then collected by a single-pixel detector. The light spectrum is recovered through an inverse Hadamard transform after a complete set of encoding is measured and recorded. The spectrometer is experimentally demonstrated with a spectral resolution better than 3 nm covering the full visible spectrum from 400 nm to 700 nm, and is capable of measuring over 200 spectra per second.

Paper Details

Date Published: 22 February 2018
PDF: 6 pages
Proc. SPIE 10545, MOEMS and Miniaturized Systems XVII, 105450X (22 February 2018); doi: 10.1117/12.2292808
Show Author Affiliations
Yu Du, National Univ. of Singapore (Singapore)
Guangya Zhou, National Univ. of Singapore (Singapore)

Published in SPIE Proceedings Vol. 10545:
MOEMS and Miniaturized Systems XVII
Wibool Piyawattanametha; Yong-Hwa Park; Hans Zappe, Editor(s)

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