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

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

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

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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

Descriptions

Attribute Name	Values
Alternative Title	On-chip near-infrared spectroscopy of CO2 using high resolution plasmonic filter array
Creator	Wang, Alan X. Squire, Kenneth Chong, Xinyuan Li, Erwen
Abstract or Summary	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	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
Series	Vol. 108 no. 22 Applied Physics Letters
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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