
Proceedings Paper
Refractive index sensitivity enhancement of 81° tilted Bragg gratings by cladding etchingFormat | Member Price | Non-Member Price |
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Paper Abstract
The properties of etched large angle tilted gratings (81o) are investigated. The attenuation peaks of the modes are
found to shift to shorter wavelengths at a rate of ~5nm/min in a solution of 10% HF acid. The most sensitive
modes are examined for different etching times creating the relationship that longer etching times results in an
increase in overall sensitivity. Comparing the sensitivity of the tilted fibre grating, etched for 6 hours,
506.9nm/unri and the most sensitive LPG, period 164μm, 389.2nm/unri in the RI range 1.30-1.40 shows that the
produced tilted grating is more sensitive than the LPG and in this range would ideally be suited for the used in
Bio-sensing applications.
Paper Details
Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75036X (5 October 2009); doi: 10.1117/12.834906
Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75036X (5 October 2009); doi: 10.1117/12.834906
Show Author Affiliations
Edward Davies, Aston Univ. (United Kingdom)
Pouneh Saffari, Aston Univ. (United Kingdom)
Chengbo Mou, Aston Univ. (United Kingdom)
Pouneh Saffari, Aston Univ. (United Kingdom)
Chengbo Mou, Aston Univ. (United Kingdom)
Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)
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