Light-guide snapshot imaging spectrometer for remote sensing applications

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dc.citation.firstpage15701
dc.citation.issueNumber11
dc.citation.journalTitleOptics Express
dc.citation.lastpage15725
dc.citation.volumeNumber27
dc.contributor.authorWang, Ye
dc.contributor.authorPawlowski, Michal E.
dc.contributor.authorCheng, Shuna
dc.contributor.authorDwight, Jason G.
dc.contributor.authorStoian, Razvan I.
dc.contributor.authorLu, Jiawei
dc.contributor.authorAlexander, David
dc.contributor.authorTkaczyk, Tomasz S.
dc.date.accessioned2019-11-22T16:20:00Z
dc.date.available2019-11-22T16:20:00Z
dc.date.issued2019
dc.description.abstractA fiber-based snapshot imaging spectrometer was developed with a maximum of 31853 (~188 x 170) spatial sampling and 61 spectral channels in the 450nm-750nm range. A compact, custom-fabricated fiber bundle was used to sample the object image at the input and create void spaces between rows at the output for dispersion. The bundle was built using multicore 6x6 fiber block ribbons. To avoid overlap between the cores in the direction of dispersion, we selected a subset of cores using two alternative approaches; a lenslet array and a photomask. To calibrate the >30000 spatial samples of the system, a rapid spatial calibration method was developed based on phase-shifting interferometry (PSI). System crosstalk and spectral resolution were also characterized. Preliminary hyperspectral imaging results of the Rice University campus landscape, obtained with the spectrometer, are presented to demonstrate the system’s spectral imaging capability for distant scenes. The spectrum of different plant species with different health conditions, obtained with the spectrometer, was in accordance with reference instrument measurements. We also imaged Houston traffic to demonstrate the system’s snapshot hyperspectral imaging capability. Potential applications of the system include terrestrial monitoring, land use, air pollution, water resources, and lightning spectroscopy. The fiber-based system design potentially allows tuning between spatial and spectral sampling to meet specific imaging requirements.
dc.identifier.citationWang, Ye, Pawlowski, Michal E., Cheng, Shuna, et al.. "Light-guide snapshot imaging spectrometer for remote sensing applications." <i>Optics Express,</i> 27, no. 11 (2019) The Optical Society: 15701-15725. https://doi.org/10.1364/OE.27.015701.
dc.identifier.digitaloe-27-11-15701
dc.identifier.doihttps://doi.org/10.1364/OE.27.015701
dc.identifier.urihttps://hdl.handle.net/1911/107727
dc.language.isoeng
dc.publisherThe Optical Society
dc.rights© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
dc.rights.urihttps://www.osapublishing.org/library/license_v1.cfm#VOR-OA
dc.titleLight-guide snapshot imaging spectrometer for remote sensing applications
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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