OSA's Digital Library

Optics Letters

Optics Letters


  • Vol. 26, Iss. 20 — Oct. 15, 2001
  • pp: 1541–1543

Chemical sensing with microbent optical fiber

Thomas Lee S, Nibu A. George, P. Sureshkumar, P. Radhakrishnan, C. P. G. Vallabhan, and V. P. N. Nampoori  »View Author Affiliations

Optics Letters, Vol. 26, Issue 20, pp. 1541-1543 (2001)

View Full Text Article

Acrobat PDF (90 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We propose and demonstrate the possibility of using a permanently microbent bare optical fiber for detecting chemical species. Two detection schemes, viz., a bright-field detection scheme (for the core modes), and a dark-field detection scheme (for the cladding modes) have been employed to produce a fiber-optic sensor. The sensor described here is sensitive enough to detect concentrations as low as nanomoles per liter of a chemical species, with a dynamic range of more than 6 orders of magnitude.

© 2001 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2370) Fiber optics and optical communications : Fiber optics sensors

Thomas Lee S, Nibu A. George, P. Sureshkumar, P. Radhakrishnan, C. P. G. Vallabhan, and V. P. N. Nampoori, "Chemical sensing with microbent optical fiber," Opt. Lett. 26, 1541-1543 (2001)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. J. N. Fields and J. H. Cole, Appl. Opt. 19, 3265 (1980).
  2. N. Lagakos, T. Litovitz, P. Macedo, R. Mohr, and R. Meister, Appl. Opt. 20, 167 (1981).
  3. N. Lagakos, J. H. Cole, and J. A. Bucaro, Appl. Opt. 26, 2171 (1987).
  4. J. W. Berthold, W. L. Ghering, and D. Varshneya, IEEE J. Lightwave Technol. LT-5, 870 (1987).
  5. D. Donlagic and M. Zavrsnik, Opt. Lett. 22, 839 (1997).
  6. J. D. Weiss, IEEE J. Lightwave Technol. 7, 1308 (1989).
  7. B. L. Anderson and J. A. Brosig, Opt. Eng. 34, 108 (1995).
  8. D. Marcuse, Theory of Dielectric Optical Waveguides (Academic, New York, 1974).
  9. L. Jeunhomme and J. P. Pocholle, Appl. Opt. 14, 2400 (1975).
  10. H. J. Patrick, and J. Lightwave Technol. 16, 1606 (1998).
  11. B. Culshaw J. Dakin, Optical Fiber Sensors (Artec House, London, 1996), Vol. III.
  12. K. Nakamura and T. Yoshino, J. Lightwave Technol. 15, 304 (1997).

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