An ammonia sensor based on Lossy Mode Resonances on a tapered optical fibre coated with porphyrin-incorporated titanium dioxide

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• 作者：Divya Tiwari^aAuthor Vitae ; Kevin Mullaney^aAuthor Vitae ; Serhiy Korposh^bAuthor Vitae ; Stephen W. James^a ; ^{s.w.james@cranfield.ac.uk}Author Vitae ; Seung-Woo Lee^cAuthor Vitae ; Ralph P. Tatam^aAuthor Vitae
• 关键词：Optical fibres ; Lossy Mode Resonances ; Ammonia sensing
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：242
• 期：Complete
• 页码：645-652
• 全文大小：2218 K
• 卷排序：242

文摘

Generation of Lossy Mode Resonances (LMRs) by the deposition of a nanoscale coating of titanium dioxide, incorporating a porphyrin as a functional compound, onto tapered optical fibres. Study of the evolution of the LMRs with increasing coating thickness on adiabatic and nonadiabatic optical fibre tapers. Demonstration of a sensor based upon the interaction of the porphyrin incorporated into the coating with ammonia. Limit of detection of 0.1 ppm.