Abstract
In this work, a graphene oxide-coated long period fibre grating (GO-LPG) is proposed for chemical sensing application. Graphene oxide (GO) has been deposited on the surface of long period grating to form a sensing layer which significantly enhances the interaction between LPG propagating light and the surrounding-medium. The sensing mechanism of GO-LPG relies on the change of grating resonance intensity against surrounding-medium refractive index (SRI). The proposed GO-LPG has been used to measure the concentrations of sugar aqueous solutions. The refractive index sensitivities with 99.5 dB/RIU in low refractive index region (1.33-1.35) and 320.6 dB/RIU in high index region (1.42-1.44) have been achieved, showing an enhancement by a factor of 3.2 and 6.8 for low and high index regions, respectively. The proposed GO-LPG can be further extended to the development of optical biochemical sensor with advantages of high sensitivity, real-time and label-free sensing.
| Original language | English |
|---|---|
| Title of host publication | Sixth European Workshop on Optical Fibre Sensors |
| Editors | Elfed Lewis |
| Place of Publication | Bellingham, WA (US) |
| Publisher | Society of Photo-Optical Instrumentation Engineers (SPIE) |
| Number of pages | 4 |
| ISBN (Print) | 978-1-5106-0219-9 |
| DOIs | |
| Publication status | Published - 30 May 2016 |
| Event | 6th European Workshop on Optical Fibre Sensors - Ireland, Limerick, Ireland Duration: 31 May 2016 → 3 Jun 2016 |
Publication series
| Name | SPIE Proceedings |
|---|---|
| Publisher | SPIE |
| Volume | 9916 |
| ISSN (Print) | 0277-786X |
| ISSN (Electronic) | 2410-9045 |
Conference
| Conference | 6th European Workshop on Optical Fibre Sensors |
|---|---|
| Abbreviated title | EWOFS 2016 |
| Country/Territory | Ireland |
| City | Limerick |
| Period | 31/05/16 → 3/06/16 |
Bibliographical note
-Chen Liu; Qi Cai; Zhongyuan Sun; Baojian Xu; Jianlong Zhao; Lin Zhang and Xianfeng Chen; "Fibre optic chemical sensor based on graphene oxide-coated long period grating", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99160V (May 30, 2016).Copyright 2016. Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
DOI: http://dx.doi.org/10.1117/12.2235671
Keywords
- APTES salinization
- chemical sensor
- graphene oxide
- long period grating
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