Performance comparison of aperture codes for multimodal, multiplex spectroscopy.

TitlePerformance comparison of aperture codes for multimodal, multiplex spectroscopy.
Publication TypeJournal Article
Year of Publication2007
AuthorsAA Wagadarikar, ME Gehm, and DJ Brady
JournalApplied Optics
Volume46
Start Page4932
Issue22
Pagination4932 - 4942
Date Published08/2007
Abstract

We experimentally evaluate diverse static independent column codes in a coded aperture spectrometer. The performance of each code is evaluated based on the signal-to-noise ratio (SNR), defined as the peak value in the spectrum to the standard deviation of the background noise, as a function of subpixel vertical misalignments. Among the code families tested, an S-matrix-based code produces spectral reconstructions with the highest SNR. The SNR is least sensitive to vertical subpixel misalignments on the detector with a Hadamard-matrix-based code. Finally, the increased sensitivity of a spectrometer using a coded aperture instead of a slit is demonstrated.

DOI10.1364/ao.46.004932
Short TitleApplied Optics