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 language | English |
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Title of host publication | 20th International Conference on Optical Fibre Sensors |
Editors | Julian D. C. Jones |
Place of Publication | Bellingham, Washington |
Publisher | SPIE |
Pages | 75035A-1-75035A-4 |
Number of pages | 4 |
Volume | 7503 |
ISBN (Print) | 9780819478146 |
DOIs | |
Publication status | Published - 2009 |
Event | 20th International Conference on Optical Fibre Sensors - Edinburgh, United Kingdom Duration: 5 Oct 2009 → 9 Oct 2009 |
Other
Other | 20th International Conference on Optical Fibre Sensors |
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Country/Territory | United Kingdom |
City | Edinburgh |
Period | 5/10/09 → 9/10/09 |