High-sensitivity optical chemsensor based on etched D-fibre Bragg gratings
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DOI
A novel and simple optical chemsensor concept based on cladding etched Bragg gratings UV-inscribed in D-fibre is reported. The sensitisation process of the Bragg structure to the refractive index of surrounding-medium under HF-etching has been investigated. Two etched devices were used to measure the concentrations of sugar solution, giving sensitivity as high as 0.02 nm/%.
| Original language | English |
|---|---|
| Pages (from-to) | 232-234 |
| Journal | Electronics Letters |
| Volume | 40 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 13 Apr 2004 |