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Ultraviolet Light Sensor Based on an Azobenzene-polymer-capped Optical-fiber End 원문보기

Current optics and photonics, v.2 no.4, 2018년, pp.303 - 307  

Cho, Hee-Taek (Department of Photonic Engineering, Chosun University) ,  Seo, Gyeong-Seo (Department of Photonic Engineering, Chosun University) ,  Lim, Ok-Rak (Department of Photonic Engineering, Chosun University) ,  Shin, Woojin (Advanced Photonics Research Institute, Gwangju Institute of Science and Technology) ,  Jang, Hee-Jin (Department of Materials Science and Engineering, Chosun University) ,  Ahn, Tae-Jung (Department of Photonic Engineering, Chosun University)

Abstract AI-Helper 아이콘AI-Helper

We propose a simple ultraviolet (UV) sensor consisting of a conventional single-mode optical fiber capped with an azobenzene-moiety-containing polymer. The UV light changes the dimensions of the azobenzene polymer, as well as the refractive index of the material. Incident light with a wavelength of ...

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제안 방법

  • Moreover, we confirmed that the sensor only reacted to UV light, not to visible-NIR light (500~900 nm). Because of its advantages, the proposed sensor will be useful for monitoring the presence of UV light in many contexts, such as high-voltage insulators, high-power transmission lines, and instruments using high-power UV light.
  • In this study, we propose a simple UV sensor consisting of only a cleaved optical fiber coated with azobenzene polymer, which induces a spectral interference pattern of reflected light in a multiple-reflection scheme. Unlike the complicated process for fabricating the azobenzene-coated FBG sensor, the azobenzene polymer is coated on the end face of the fiber, in a process similar to that used for thin films.
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참고문헌 (21)

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  16. W. Y. Kim, C.-Y. Kim, H.-K. Kim, and T.-J. Ahn, "Improving the sensitivity of an ultraviolet optical sensor based on a fiber Bragg grating by coating with a photoresponsive material," Korean J. Opt. Photon. 26, 83-87 (2015). 

  17. G.-S. Seo and T.-J. Ahn, "Protection method for diameter-downsized fiber Bragg gratings for highly sensitive ultraviolet light sensors," Curr. Opt. Photon. 2, 221-225 (2018). 

  18. A. Lendlein, H. Jiang, O. Junger, and R. Langer, "Light-induced shape-memory polymers," Nature 434, 879-882 (2005). 

  19. H.-K. Kim, X.-S. Wang, Y. Fujita, A. Sudo, H. Nishida, M. Fujii, and T. Endo, "A rapid photomechanical switching polymer blend system composed of azobenzene-carrying poly(vinylether) and poly(carbonate)," Polymer 46, 5879-5883 (2005). 

  20. S. Tanaka, H.-K. Kim, A. Sudo, H. Nishida, and T. Endo, "Anisotropic photomechanical response of stretched blend film made of polycaprolactone-polyvinyl ether with azobenzene group as side chain," Macromol. Chem. Phys. 209, 2071-2077 (2008). 

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