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Optica Publishing Group
  • Current Optics and Photonics
  • Vol. 2,
  • Issue 3,
  • pp. 221-225
  • (2018)

Protection Method for Diameter-downsized Fiber Bragg Gratings for Highly Sensitive Ultraviolet Light Sensors

Open Access Open Access

Abstract

We suggested the use of miniature hollow glass tubes having high ultraviolet (UV) transmission characteristics for the protection of optical-fiber-type UV sensors. We have recently proposed a highly sensitive optical sensor in the UV spectral range, using a fiber Bragg grating (FBG) coated with an azobenzene polymer as the photoresponsive material. In this study, we used UV-transparent miniature glass tubes to protect the etched FBG with the azobenzene polymer coating. This technique will be very useful for protecting various fiber-based UV sensors.

© 2018 Optical Society of Korea

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