Enhanced chemiluminescent detection scheme for trace vapor sensing in pneumatically-tuned hollow core photonic bandgap fibers
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Joannopoulos_Enhanced chemiluminescent.pdf
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1.79 MB
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Author(s)
Stolyarov, Alexander Mark
Gumennik, Alexander
McDaniel, William
Shapira, Ofer
Schell, Brent
Sorin, Fabien
Kuriki, Ken
Benoit, Giles
Fink, Yoel
Rose, Aimee, 1973-
Date Issued
May 2012
Journal
Optics Express
Publisher
Optical Society of America
Citation
Stolyarov, Alexander M. et al. “Enhanced Chemiluminescent Detection Scheme for Trace Vapor Sensing in Pneumatically-tuned Hollow Core Photonic Bandgap Fibers.” Optics Express 20.11 (2012): 12407. Web.© 2012 OSA.
Version
Final published version
Abstract
We demonstrate an in-fiber gas phase chemical detection architecture in which a chemiluminescent (CL) reaction is spatially and spectrally matched to the core modes of hollow photonic bandgap (PBG) fibers in order to enhance detection efficiency. A peroxide-sensitive CL material is annularly shaped and centered within the fiber’s hollow core, thereby increasing the overlap between the emission intensity and the intensity distribution of the low-loss fiber modes. This configuration improves the sensitivity by 0.9 dB/cm compared to coating the material directly on the inner fiber surface, where coupling to both higher loss core modes and cladding modes is enhanced. By integrating the former configuration with a custom-built optofluidic system designed for concomitant controlled vapor delivery and emission measurement, we achieve a limit-of-detection of 100 parts per billion (ppb) for hydrogen peroxide vapor. The PBG fibers are produced by a new fabrication method whereby external gas pressure is used as a control knob to actively tune the transmission bandgaps through the entire visible range during the thermal drawing process.
MIT Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1364/OE.20.012407
