Optical biochemical sensors based on long-period fibre gratings UV-inscribed in D-fibre with enhanced sensitivity by HF etching process

Xianfeng Chen*, Kaiming Zhou, Lin Zhang, Ian Bennion

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)187-191
Number of pages5
JournalProceedings of SPIE - International Society for Optical Engineering
Volume5486
DOIs
Publication statusPublished - 29 Jul 2004
EventALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics - Bedford, United Kingdom
Duration: 19 Sep 200323 Sep 2003

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