A single long-period fibre grating was written in a biconical fibre taper made from standard communications step-index optical fibre, resulting in an interferometric fibre sensor device that provided a resolution of 1 × 10-4 for refractive indices in the range of 1.30 to 1.34, suggesting that these devices may be suitable for use with aqueous solutions. © IEE 2005.
- single long-period fibre grating
- biconical fibre taper
- standard communications step-index optical fibre
- interferometric fibre sensor device
- aqueous solutions