Rui Min

*Application of Optical Fiber in Engineering*

**5. Conclusion and outlook**

**Figure 12.**

ments for the irradiation setup.

**Acknowledgements**

**Conflict of interest**

(62003046).

POF grating fabrication technology have room to improve.

*Schematic of the experiment setup for fully distributed strain measurement [66].*

mercial CYTOP POF and grating on such fiber.

The authors declare no conflict of interest.

Significant progress has been demonstrated for POF grating devices fabrication during the last years, such as to allow fast fabrication of POF grating devices under 248 nm and 266 nm wavelength UV, one 15 ns pulse for POF FBG fabrication. Besides the benefit as potential grating fabrication technology in the optical fiber drawing process, special grating structures such as Chirped FBG also take advantage of the short irradiation time, such as the benefit to reduce the stability require-

Besides strain and temperature sensitive devices as the main applications of POF FBG, special grating devices open new perspectives. As the main relevant examples, chirped POF FBGs used for high-resolution thermal detection in the biomedical area with a higher sensitivity and bio-compatibility than silica ones, special grating in POF are attractive for future biomedical applications, which also make special

To conclude, grating devices in POF show attractive performance for sensing applications. However, most of the POF for grating devices fabrication are still homemade, which need time and research to make this technology mature for real applications. From this point of view, grating devices fabrication in commercial CYTOP POF are promising, also the investigated for low cost single-mode com-

The author thanks for the support of starting funding in Beijing Normal University at Zhuhai and the National Natural Science Foundation of China

**38**

Center for Cognition and Neuroergonomics, State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University at Zhuhai, Guangdong, China

\*Address all correspondence to: ruimin@bnu.edu.cn

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
