Long path-length axial absorption detection in photonic crystal fiber

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Long path-length axial absorption detection in photonic crystal fiber

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dc.contributor.author Sun, Yi
dc.contributor.author Yu, X.
dc.contributor.author Nguyen, Nam-Trung
dc.contributor.author Shum, Perry Ping
dc.contributor.author Kwok, Yien Chian
dc.date.accessioned 2012-05-08T01:23:04Z
dc.date.available 2012-05-08T01:23:04Z
dc.date.copyright 2008
dc.date.issued 2012-05-08
dc.identifier.citation Sun, Y., Yu, X., Nguyen, N. T., Shum, P., & Kwok, Y.C. (2008). Long path-length axial absorption detection in photonic crystal fiber. Analytical Chemistry, 80 (11), 4220-4224.
dc.identifier.uri http://hdl.handle.net/10220/7816
dc.description.abstract In this paper, we present a long path-length axial absorption detection method in photonic crystal fibers (PCFs). A PCF, also called a holey fiber or microstructured fiber, is an optical fiber which consists of a periodic array of very tiny and closely spaced air holes on the scale of 1 µm running through the whole length of the fiber. Here, a PCF with porous microstructures was used as a sample container for absorption detection. Light was guided by total internal reflection and propagated axially in the air holes of PCFs that were filled with the solution of the absorbing species by vacuum pumping. Excellent linearity was obtained for different sample concentrations, and high sensitivity was achieved due to the long optical path length. In addition, as the dimension of the PCF is small, the sample volume is greatly reduced. Moreover, due to its robustness, the PCF can be coiled up to keep the footprint small, making it suitable for microchip absorption detection. It can be widely used for both off-chip and on-chip detection of absorbing species, such as ions, alkaloids, and biomolecules.
dc.format.extent 18 p.
dc.language.iso en
dc.relation.ispartofseries Analytical chemistry
dc.rights © 2008 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by Analytical Chemistry, American Chemical Society. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1021/ac800417n].
dc.title Long path-length axial absorption detection in photonic crystal fiber
dc.type Journal Article
dc.contributor.school School of Mechanical and Aerospace Engineering
dc.identifier.doi http://dx.doi.org/10.1021/ac800417n
dc.description.version Accepted version
dc.identifier.rims 131834

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