Optical fibre gratings with response to 2µm and their sensing capabilities

A. Adebayo; Z. Yan; L. Zhang; D. Robinson; P. Li; J. Leng

doi:10.1117/12.968803

17 October 2012 Optical fibre gratings with response to 2µm and their sensing capabilities

A. Adebayo, Z. Yan, L. Zhang, D. Robinson, P. Li, J. Leng

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842141 (2012) https://doi.org/10.1117/12.968803
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Recently, we have extended fibre grating devices in to mid-IR range. Fibre Bragg gratings (FBGs) and long-period gratings (LPGs) with spectral responses from near-IR (800nm) to mid-IR ( ~ 2μm) have been demonstrated with transmission loss as strong as 10-20dB. 2μm FBG and LPG showed temperature and refractive index (RI) sensitivities of ~ 91pm/°C and 357nm/RIU respectively. Finally, we have performed a bio sensing experiment by monitoring the degradation of foetal bovine serum at room temperature. The results encouragingly show that the mid-IR LPGs can be an ideal biosensor platform as they have high RI sensitivity and can be used to detect concentration change of bio- samples.

Citation Download Citation

A. Adebayo, Z. Yan, L. Zhang, D. Robinson, P. Li, and J. Leng "Optical fibre gratings with response to 2µm and their sensing capabilities", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842141 (17 October 2012); https://doi.org/10.1117/12.968803

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