Double-pass configuration to enhance the sensitivity of a polyelectrolyte-coated arc-induced long-period fiber grating

作者：Loh Mey Chern; Yong Yun Thung; Kuramitz Hideki; Teh Peh Chiong; Abd Rahman Faidz^*

来源：Journal of Electromagnetic Waves and Applications, 2015, 29(14): 1908-1916.

DOI：10.1080/09205071.2015.1066715

• long-period fiber grating
• optical fiber sensor
• polyelectrolyte coating
• double-pass configuration

In this paper, we introduce a simple and effective method to improve the transmission power respond of a polyelectrolyte (PE)-coated arc-induced long-period fiber grating (LPFG) sensor toward external perturbation. Experiments using single-pass and double-pass configurations were conducted to measure sucrose concentrations of between 0 and 80wt%. The results showed that the transmission power sensitivity of the PE-coated LPFG sensor in the double-pass configuration was almost double compared to the single-pass configuration.

• 出版日期2015-9-22