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Spectrum-free integrated photonic remote molecular identification and sensing

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.1364/OE.400061
AuthorSearch for: ORCID identifier: https://orcid.org/0000-0003-0522-0187; Search for: ; Search for: 1; Search for: ; Search for: ORCID identifier: https://orcid.org/0000-0002-3427-0186; Search for: ORCID identifier: https://orcid.org/0000-0003-2151-2438; Search for: ORCID identifier: https://orcid.org/0000-0003-4232-9130; Search for: ORCID identifier: https://orcid.org/0000-0002-0490-5224; Search for: ; Search for: ; Search for: ; Search for: ; Search for: 1; Search for:
Affiliation
  1. National Research Council of Canada. Herzberg Astronomy and Astrophysics
FormatText, Article
Abstract
Absorption spectroscopy is widely used in sensing and astronomy to understand remote molecular compositions. However, dispersive techniques require multichannel detection, reducing detection sensitivity while increasing instrument cost when compared to spectrophotometric methods. We present a novel non-dispersive infrared molecular detection and identification scheme that performs spectral correlation optically using a specially tailored integrated silicon ring resonator. We show experimentally that the correlation amplitude is proportional to the number of overlapping ring resonances and gas lines, and that molecular specificity can be achieved from the phase of the correlation signal. This strategy can enable on-chip detection of extremely faint remote spectral signatures.
Publication date
PublisherThe Optical Society
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In
  • Optics Express 28, no. 19 (2020): 27951–27965.
LanguageEnglish
Peer reviewedYes
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Record identifier268c095c-5294-425f-b82f-88a07887b66a
Record created2022-06-27
Record modified2022-12-14
Date modified: