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A compact, portable and low cost generic interrogation strain sensor system using an embedded VCSEL, detector and fibre Bragg grating

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Abstract
We present a compact, portable and low cost generic interrogation strain sensor system using a fibre Bragg grating configured in transmission mode with a vertical-cavity surface-emitting laser (VCSEL) light source and a GaAs photodetector embedded in a polymer skin. The photocurrent value is read and stored by a microcontroller. In addition, the photocurrent data is sent via Bluetooth to a computer or tablet device that can present the live data in a real time graph. With a matched grating and VCSEL, the system is able to automatically scan and lock the VCSEL to the most sensitive edge of the grating. Commercially available VCSEL and photodetector chips are thinned down to 20 lam and integrated in an ultra-thin flexible optical foil using several thin film deposition steps. A dedicated micro mirror plug is fabricated to couple the driving optoelectronics to the fibre sensors. The resulting optoelectronic package can be embedded in a thin, planar sensing sheet and the host material for this sheet is a flexible and stretchable polymer. The result is a fully embedded fibre sensing system - a photonic skin. Further investigations are currently being carried out to determine the stability and robustness of the embedded optoelectronic components.
Keywords
Interrogation system, Vertical-cavity surface-emitting laser, dynamic, flexible optoelectronic package, microcontroller, low cost, flexible polymer skin, fibre Bragg grating

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Citation

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Chicago
Lee, Graham CB, Bram Van Hoe, Zhijun Yan, Oliver Maskery, Kate Sugden, David Webb, and Geert Van Steenberge. 2012. “A Compact, Portable and Low Cost Generic Interrogation Strain Sensor System Using an Embedded VCSEL, Detector and Fibre Bragg Grating.” In Proceedings of Spie, the International Society for Optical Engineering, ed. KD Choquette and C Lei. Vol. 8276. Bellingham, WA, USA: SPIE-INT SOC OPTICAL ENGINEERING.
APA
Lee, G. C., Van Hoe, B., Yan, Z., Maskery, O., Sugden, K., Webb, D., & Van Steenberge, G. (2012). A compact, portable and low cost generic interrogation strain sensor system using an embedded VCSEL, detector and fibre Bragg grating. In K. Choquette & C. Lei (Eds.), PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING (Vol. 8276). Presented at the Conference on Vertical-Cavity Surface-Emitting Lasers XVI (VCSELs)/SPIE Photonics West Symposium, Bellingham, WA, USA: SPIE-INT SOC OPTICAL ENGINEERING.
Vancouver
1.
Lee GC, Van Hoe B, Yan Z, Maskery O, Sugden K, Webb D, et al. A compact, portable and low cost generic interrogation strain sensor system using an embedded VCSEL, detector and fibre Bragg grating. In: Choquette K, Lei C, editors. PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING. Bellingham, WA, USA: SPIE-INT SOC OPTICAL ENGINEERING; 2012.
MLA
Lee, Graham CB, Bram Van Hoe, Zhijun Yan, et al. “A Compact, Portable and Low Cost Generic Interrogation Strain Sensor System Using an Embedded VCSEL, Detector and Fibre Bragg Grating.” Proceedings of Spie, the International Society for Optical Engineering. Ed. KD Choquette & C Lei. Vol. 8276. Bellingham, WA, USA: SPIE-INT SOC OPTICAL ENGINEERING, 2012. Print.
@inproceedings{2121619,
  abstract     = {We present a compact, portable and low cost generic interrogation strain sensor system using a fibre Bragg grating configured in transmission mode with a vertical-cavity surface-emitting laser (VCSEL) light source and a GaAs photodetector embedded in a polymer skin. The photocurrent value is read and stored by a microcontroller. In addition, the photocurrent data is sent via Bluetooth to a computer or tablet device that can present the live data in a real time graph. With a matched grating and VCSEL, the system is able to automatically scan and lock the VCSEL to the most sensitive edge of the grating. Commercially available VCSEL and photodetector chips are thinned down to 20 lam and integrated in an ultra-thin flexible optical foil using several thin film deposition steps. A dedicated micro mirror plug is fabricated to couple the driving optoelectronics to the fibre sensors. The resulting optoelectronic package can be embedded in a thin, planar sensing sheet and the host material for this sheet is a flexible and stretchable polymer. The result is a fully embedded fibre sensing system - a photonic skin. Further investigations are currently being carried out to determine the stability and robustness of the embedded optoelectronic components.},
  articleno    = {82760E},
  author       = {Lee, Graham CB and Van Hoe, Bram and Yan, Zhijun and Maskery, Oliver and Sugden, Kate and Webb, David and Van Steenberge, Geert},
  booktitle    = {PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING},
  editor       = {Choquette, KD  and Lei, C},
  isbn         = {9780819489197},
  issn         = {0277-786X},
  keyword      = {Interrogation system,Vertical-cavity surface-emitting laser,dynamic,flexible optoelectronic package,microcontroller,low cost,flexible polymer skin,fibre Bragg grating},
  language     = {eng},
  location     = {San Francisco, CA, USA},
  pages        = {8},
  publisher    = {SPIE-INT SOC OPTICAL ENGINEERING},
  title        = {A compact, portable and low cost generic interrogation strain sensor system using an embedded VCSEL, detector and fibre Bragg grating},
  url          = {http://dx.doi.org/10.1117/12.907810},
  volume       = {8276},
  year         = {2012},
}

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