Light-guide snapshot imaging spectrometer for remote sensing applications

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dc.citation.firstpage15701en_US
dc.citation.issueNumber11en_US
dc.citation.journalTitleOptics Expressen_US
dc.citation.lastpage15725en_US
dc.citation.volumeNumber27en_US
dc.contributor.authorWang, Yeen_US
dc.contributor.authorPawlowski, Michal E.en_US
dc.contributor.authorCheng, Shunaen_US
dc.contributor.authorDwight, Jason G.en_US
dc.contributor.authorStoian, Razvan I.en_US
dc.contributor.authorLu, Jiaweien_US
dc.contributor.authorAlexander, Daviden_US
dc.contributor.authorTkaczyk, Tomasz S.en_US
dc.date.accessioned2019-11-22T16:20:00Zen_US
dc.date.available2019-11-22T16:20:00Zen_US
dc.date.issued2019en_US
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.en_US
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.en_US
dc.identifier.digitaloe-27-11-15701en_US
dc.identifier.doihttps://doi.org/10.1364/OE.27.015701en_US
dc.identifier.urihttps://hdl.handle.net/1911/107727en_US
dc.language.isoengen_US
dc.publisherThe Optical Societyen_US
dc.rights© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreementen_US
dc.rights.urihttps://www.osapublishing.org/library/license_v1.cfm#VOR-OAen_US
dc.titleLight-guide snapshot imaging spectrometer for remote sensing applicationsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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