We report a new concept of biochemical sensor device based on long-period grating structures UV-inscribed in D-fibre. The surrounding-medium refractive index sensitivity of the devices has been enhanced significantly by a hydrofluoric acid etching process. The devices have been used to measure the sugar concentrations showing clearly an encoding relation between the chemical concentration and the grating spectral response, demonstrating their capability for potential biochemical sensing applications.
|Number of pages||5|
|Journal||Proceedings of SPIE - International Society for Optical Engineering|
|Publication status||Published - 29 Jul 2004|
|Event||ALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics - Bedford, United Kingdom|
Duration: 19 Sep 2003 → 23 Sep 2003