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Nanocrystalline diamond sheets as protective coatings for fiber-optic measurement head

Abstract

Fiber-optic sensors find numerous applications in science and industry, but their full potential is limited because of the risk of damaging the measurement head, in particular, due to the vulnerability of unprotected tips of the fiber to mechanical damage and aggressive chemical agents. In this paper, we report the first use of a new nanocrystalline diamond structure in a fiber-optic measurement head as a protective coating of the fiber tip. The nanocrystalline sheet structures, produced with the use of Microwave Plasma Assisted Chemical Vapor Deposition System (MW PA CVD), were characterized by Scanning Electron Microscopy (SEM) and successfully transferred from the deposition substrate onto the surface of the tip of a single-mode fiber sensor head. A Fabry-Perot sensing interferometer for distance measurement comprising that fiber was built. The measurement results were compared with numerical modeling. High values of achieved correlation coefficients (R2 > 0.99) between a linear model and distance measurements data indicate that the diamond sheet does not affect the correct operation of the sensor while extending its potential scope of applications.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
CARBON no. 156, pages 104 - 109,
ISSN: 0008-6223
Language:
English
Publication year:
2020
Bibliographic description:
Kosowska M., Majchrowicz D., Ficek M., Wierzba P., Fleger Y., Fixler D., Szczerska M.: Nanocrystalline diamond sheets as protective coatings for fiber-optic measurement head// CARBON -Vol. 156, (2020), s.104-109
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.carbon.2019.09.042
Sources of funding:
  • Projekt 2017/25/N/ST7/01610 finansowany przez NCN
  • TechmatstrategDiamsec 347324 finansowany przez NCBiR
  • Program DS Wydziału Elektroniki, Telekomunikacji i Informatyki, Politechnika Gdańska
Verified by:
Gdańsk University of Technology

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