Modal interferometer based on volatile organic compounds diffused in a simplified hollow-core photonic crystal fiber
In this paper,a modal interferometer based on a simplified hollow-core PCF,which diffused with volatile organic compounds(VOCs)in the air holes,is proposed and investigated in our experiment.When light travels through the input single mode fiber and transmits into the simplified hollow-core PCF,there is only fundamental core mode.However,the high-order core modes will be excited when the molecules of VOCs diffuse into the air holes.After propagation of these modes in the simplified hollow-core PCF,they will recombine at the exit single mode fiber.The ethanol is chosen as the VOC sample in our experiments.The interference pattern of the interferometer,based on a 5.1 cm long simplified hollow-core PCF,exhibited fringe spacing of~30 nm.The transmission intensity decreases while the fringe visibility increases as the ethanol concentration becomes larger,and the interference spectrum of the ethanol-diffused simplified hollow-core PCF modal interferometer has a red-shift,from 1542.96 nm at 250 ppm to 1545.52 nm at 1000 ppm.The modal interference proposed above has great potential as an optical fiber sensor,measuring physical parameters such as the concentration of VOCs.
Modal interferometers simplified hollow-core photonic crystal fiber volatile organic compounds
Luo Niu Chun-Liu Zhao Juan Kang Man-Ping Ye
Institute of Optoelectronic Technology,China Jiliang University,Hangzhou,China,310018
国际会议
2013 International Conference on Optical Instrument and Technology (OIT’2013)(2013年光学仪器与技术国际会议)
北京
英文
1-8
2013-11-17（万方平台首次上网日期，不代表论文的发表时间）