Ammonia gas fiber sensor based on poly-aniline sensing film coated on superstructure fiber Bragg gratings

作者：Ai Lung^*; Mau Jiang Chiou; Liu Wen Fung; Fu Ming Yue; Chen Tzu Chiang

来源：Microwave and Optical Technology Letters, 2007, 49(12): 3063-3066.

DOI：10.1002/mop.22948

• fiber sensor
• superstructure fiber Bragg grating (SFBG)
• thin-film coating
• poly-aniline (PANI)
• ammonia (NH3)

In this study, we experimentally demonstrated that the concentrations of ammonia (NIT,) gas con be detected by a fiber sensor based on the poly-aniline(PANI) sensing film coated on the surface of an etched superstructure fiber Bragg grating (SFBG). This sensing mechanism is based on the W, gas to interact with the PANI-coating film to cause the film index change and then to result in the Bragg wavelength shift. The sensitivity of this sensor is around 0.073 pm/ppm, which requires to be improved in the future for achieving a simple, reliable, repeatable, and nondestructive chemical-gas fiber sensor.

• 出版日期2007-12
• 单位中国人民解放军国防大学