OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 36 — Dec. 20, 1999
  • pp: 7370–7374

Fiber-Optic Chemical Sensing with Langmuir-Blodgett Overlay Waveguides

Damien Flannery, Stephen W. James, Ralph P. Tatam, and Geoffery J. Ashwell  »View Author Affiliations


Applied Optics, Vol. 38, Issue 36, pp. 7370-7374 (1999)
http://dx.doi.org/10.1364/AO.38.007370


View Full Text Article

Acrobat PDF (107 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Fiber-optic chemical sensing has been demonstrated with a side-polished single-mode optical fiber, evanescently coupled to chemically sensitive Langmuir–Blodgett (LB) overlay waveguides. The sensors exhibit a channel-dropping response centered on a wavelength that is dependent on the thickness and the refractive index of the overlay waveguide. It has been shown that pH-sensitive organic dyes proved to be suitable materials for the formation of an overlay waveguide whereas LB deposition provides the required thickness control. A theoretical model of the sensor response, based on the Kramers–Kronig relations and phase matching of the guided modes within the optical fiber and overlay waveguide, shows good agreement with experimental results.

© 1999 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2370) Fiber optics and optical communications : Fiber optics sensors

Citation
Damien Flannery, Stephen W. James, Ralph P. Tatam, and Geoffery J. Ashwell, "Fiber-Optic Chemical Sensing with Langmuir-Blodgett Overlay Waveguides," Appl. Opt. 38, 7370-7374 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-36-7370


Sort:  Author  |  Year  |  Journal  |  Reset

References

  1. R. A. Lieberman, “Recent progress in intrinsic fibre-optic chemical sensing II,” Sens. Actuators B 11, 43–55 (1993).
  2. H. Tai, H. Tanaka, and T. Yoshino, “Fiber-optic evanescent-wave methane-gas sensor using optical absorption for the 3.392-μm line of a He–Ne laser,” Opt. Lett. 12, 437–439 (1987).
  3. B. Culshaw, F. Muhammad, G. Stewart, S. Murray, D. Pinchbeck, J. Norris, S. Cassidy, M. Wilkinson, D. Williams, I. Crisp, R. Van Ewyk, and A. McGhee, “Evanescent wave methane gas detection using optical fibers,” Electron. Lett. 28, 2232–2234 (1992).
  4. R. A. Lieberman, L. L. Blyer, and L. G. Cohen, “A distributed fibre optic sensor based on cladding fluorescence,” J. Lightwave Technol. 8, 212–220 (1990).
  5. D. Flannery, S. W. James, R. P. Tatam, and G. J. Ashwell, “pH sensor using Langmuir–Blodgett overlays on polished optical fibres,” Opt. Lett. 22, 567–569 (1997).
  6. R. B. Charters, S. E. Staines, and R. P. Tatam, “In-line fiber-optic components using Langmuir–Blodgett films,” Opt. Lett. 19, 2036–2038 (1994).
  7. V. Ramaswamy, “Propagation in asymmetrical anisotropic film waveguides,” Appl. Opt. 13, 1363–1371 (1974).
  8. C. D. Hussey and J. D. Minelly, “Optical fibre polishing with a motor-driven polishing wheel,” Electron. Lett. 24, 805–807 (1988).
  9. O. G. Leminger and R. Zengerle, “Determination of single-mode fiber coupler design parameters from loss measurements,” J. Lightwave Technol. LT-3, 864–867 (1985).
  10. M. C. Petty, Langmuir–Blodgett films (Cambridge U. Press, Cambridge, England, 1996).
  11. R. A. Potyrailo, V. P. Ruddy, and G. M. Hieftje, “Kramers–Kronig analysis of molecular evanescent-wave absorption spectra obtained by multimode step-index optical fibers,” Appl. Opt. 35, 4102–4111 (1996).
  12. J. I. Steinfeld, An Introduction to Modern Molecular Spectroscopy (MIT, Cambridge, Mass., 1985).
  13. E. Kreyszig, “Numerical analysis,” in Instructor’s Manual for Advanced Engineering Mathematics, E. Kreyszig, ed., 5th ed. (Wiley, New York, 1983), pp. 788–790.
  14. A. K. Ghatak, K. Thyagarajan, and M. R. Shenoy, “Numerical analysis of planar optical waveguides using matrix approach,” J. Lightwave Technol. LT-5, 660–667 (1987).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited