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Laser micromachined 3D glass photonics platform demonstrated by temperature compensated strain sensor

Viktor Geudens (UGent) , Shahryar Nategh (UGent) , Geert Van Steenberge (UGent) , Jan Belis (UGent) and Jeroen Missinne (UGent)
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Abstract
A platform for integrated glass solutions with full 3D capabilities based on femtosecond laser micromachining is presented. The design and fabrication of different building blocks, such as optical waveguides, bragg gratings, V-grooves and (freestanding) microstructures are described. The capabilities of the platform are exemplified by designing a temperature compensated strain sensor composed of two Bragg grating sensors, where one Bragg grating sensor is mechanically isolated by means of a cantilever, while the other is embedded in the bulk of the glass. Both Bragg gratings exhibit a similar temperature sensitivity of about 10.5 pm/°C. It is proven that the isolated Bragg grating does not experience strain, while the other one does with a sensitivity of 1.1 pm/με; thus allowing temperature compensation. Integrated V-grooves allow for a fully fiber-packaged strain sensing solution, directly applicable in many structural health monitoring applications. The versatility of the platform is further illustrated by the widely varying building blocks.
Keywords
Strain, Temperature compensation, Bragg grating, Waveguide, Monolithic, Glass, Fused silica, Femtosecond laser, FLICE, FLDW, Platform, GRATING WAVE-GUIDES, FEMTOSECOND-LASER, FUSED-SILICA, WRITTEN, OPTIMIZATION, FABRICATION, SPLITTERS

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Citation

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MLA
Geudens, Viktor, et al. “Laser Micromachined 3D Glass Photonics Platform Demonstrated by Temperature Compensated Strain Sensor.” OPTICS AND LASER TECHNOLOGY, vol. 169, 2024, doi:10.1016/j.optlastec.2023.109970.
APA
Geudens, V., Nategh, S., Van Steenberge, G., Belis, J., & Missinne, J. (2024). Laser micromachined 3D glass photonics platform demonstrated by temperature compensated strain sensor. OPTICS AND LASER TECHNOLOGY, 169. https://doi.org/10.1016/j.optlastec.2023.109970
Chicago author-date
Geudens, Viktor, Shahryar Nategh, Geert Van Steenberge, Jan Belis, and Jeroen Missinne. 2024. “Laser Micromachined 3D Glass Photonics Platform Demonstrated by Temperature Compensated Strain Sensor.” OPTICS AND LASER TECHNOLOGY 169. https://doi.org/10.1016/j.optlastec.2023.109970.
Chicago author-date (all authors)
Geudens, Viktor, Shahryar Nategh, Geert Van Steenberge, Jan Belis, and Jeroen Missinne. 2024. “Laser Micromachined 3D Glass Photonics Platform Demonstrated by Temperature Compensated Strain Sensor.” OPTICS AND LASER TECHNOLOGY 169. doi:10.1016/j.optlastec.2023.109970.
Vancouver
1.
Geudens V, Nategh S, Van Steenberge G, Belis J, Missinne J. Laser micromachined 3D glass photonics platform demonstrated by temperature compensated strain sensor. OPTICS AND LASER TECHNOLOGY. 2024;169.
IEEE
[1]
V. Geudens, S. Nategh, G. Van Steenberge, J. Belis, and J. Missinne, “Laser micromachined 3D glass photonics platform demonstrated by temperature compensated strain sensor,” OPTICS AND LASER TECHNOLOGY, vol. 169, 2024.
@article{01HA4JEMJZH1GV7RGVQAR7SRNQ,
  abstract     = {{A platform for integrated glass solutions with full 3D capabilities based on femtosecond laser micromachining is presented. The design and fabrication of different building blocks, such as optical waveguides, bragg gratings, V-grooves and (freestanding) microstructures are described. The capabilities of the platform are exemplified by designing a temperature compensated strain sensor composed of two Bragg grating sensors, where one Bragg grating sensor is mechanically isolated by means of a cantilever, while the other is embedded in the bulk of the glass. Both Bragg gratings exhibit a similar temperature sensitivity of about 10.5 pm/°C. It is proven that the isolated Bragg grating does not experience strain, while the other one does with a sensitivity of 1.1 pm/με; thus allowing temperature compensation. Integrated V-grooves allow for a fully fiber-packaged strain sensing solution, directly applicable in many structural health monitoring applications. The versatility of the platform is further illustrated by the widely varying building blocks.}},
  articleno    = {{109970}},
  author       = {{Geudens, Viktor and Nategh, Shahryar and Van Steenberge, Geert and Belis, Jan and Missinne, Jeroen}},
  issn         = {{0030-3992}},
  journal      = {{OPTICS AND LASER TECHNOLOGY}},
  keywords     = {{Strain,Temperature compensation,Bragg grating,Waveguide,Monolithic,Glass,Fused silica,Femtosecond laser,FLICE,FLDW,Platform,GRATING WAVE-GUIDES,FEMTOSECOND-LASER,FUSED-SILICA,WRITTEN,OPTIMIZATION,FABRICATION,SPLITTERS}},
  language     = {{eng}},
  pages        = {{8}},
  title        = {{Laser micromachined 3D glass photonics platform demonstrated by temperature compensated strain sensor}},
  url          = {{http://doi.org/10.1016/j.optlastec.2023.109970}},
  volume       = {{169}},
  year         = {{2024}},
}

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