Ultrasensitive refractive index sensor based on twin-core photonic bandgap fibers

Wu Yuan*, Graham E. Town, Ole Bang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

3 Citations (Scopus)
2 Downloads (Pure)

Abstract

We have theoretically investigated twin-core all-solid photonic bandgap fibers (PBGFs) for evanescent wave sensing of refractive index within one single microfluidic analyte channel centered between the two cores. The sensor can achieve ultrahigh sensitivity by detecting the change in transmission. We find novel features in the sensing characteristics: the sensitivity is higher at the short wavelength edge of a bandgap than at the long wavelength edge, the effective index of the odd supermode (nodd) is more sensitive to ambient refractive index change compared with that of the even supermode (n even).

Original languageEnglish
Title of host publication20th International Conference on Optical Fibre Sensors
EditorsJulian D. C. Jones
Place of PublicationBellingham, Washington
PublisherSPIE
Pages75035A-1-75035A-4
Number of pages4
Volume7503
ISBN (Print)9780819478146
DOIs
Publication statusPublished - 2009
Event20th International Conference on Optical Fibre Sensors - Edinburgh, United Kingdom
Duration: 5 Oct 20099 Oct 2009

Other

Other20th International Conference on Optical Fibre Sensors
CountryUnited Kingdom
CityEdinburgh
Period5/10/099/10/09

Bibliographical note

Copyright 2009 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

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    Yuan, W., Town, G. E., & Bang, O. (2009). Ultrasensitive refractive index sensor based on twin-core photonic bandgap fibers. In J. D. C. Jones (Ed.), 20th International Conference on Optical Fibre Sensors (Vol. 7503, pp. 75035A-1-75035A-4). [75035A] Bellingham, Washington: SPIE. https://doi.org/10.1117/12.835326