On-chip near-infrared spectroscopy of CO₂ using high resolution plasmonic filter array

Chong, Xinyuan; Li, Erwen; Squire, Kenneth; Wang, Alan X.

Citeable URL: https://ir.library.oregonstate.edu/concern/articles/3484zn332

Copyright 2016 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at: http://scitation.aip.org/content/aip/journal/apl/108/22/10.1063/1.4953261

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Descriptions

Attribute Name	Values
Alternative Title	On-chip near-infrared spectroscopy of CO2 using high resolution plasmonic filter array
Creator	Chong, Xinyuan Li, Erwen Squire, Kenneth Wang, Alan X.
Abstract	We report an ultra-compact, cost-effective on-chip near-infrared spectroscopy system for CO₂ sensing using narrow-band optical filter array based on plasmonic gratings with a waveguide layer. By varying the periodicity of the gratings, the transmission spectra of the filters can be continuously tuned to cover the 2.0 μm sensing window with high spectral resolution around 10 nm. Our experimental results show that the on-chip spectroscopy system can resolve the two symmetric vibrational bands of CO₂ at 2.0 μm wavelength, which proves its potential to replace the expensive commercial IR spectroscopy system for on-site gas sensing.
Resource Type	Article
DOI	https://doi.org/10.1063/1.4953261
Date Available	2016-11-30T09:00:08+00:00
Date Issued	2016-05-30
Citation	Chong, X., Li, E., Squire, K., & Wang, A. X. (2016). On-chip near-infrared spectroscopy of CO₂ using high resolution plasmonic filter array. Applied Physics Letters, 108(22), 221106. doi:10.1063/1.4953261
Journal Title	Applied Physics Letters
Journal Volume	108
Journal Issue/Number	22
Rights Statement	Copyright Not Evaluated
Funding Statement (additional comments about funding)	This technical effort was sponsored by the National Science Foundation under Grant Nos. 1342318 and 1449383. Xinyuan Chong was partially supported by the Graduate Student Fellowship from the National Energy Technology Laboratory (NETL).
Publisher	AIP Publishing
Peer Reviewed	Yes
Language	English [eng]
Replaces	http://hdl.handle.net/1957/59527

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