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

Graham C.B. Lee, Zhijun Yan, D. Webb, Bram Van Hoe, Oliver Maskery, Kate Sugden, Geert Van Steenberge

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 µm 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.
Original languageEnglish
Title of host publicationVertical-cavity surface-emitting lasers XVI
EditorsChun Lei, Kent D. Choquette
PublisherSPIE
Number of pages8
ISBN (Print)978-0-8194-8919-7
DOIs
Publication statusPublished - Jan 2012
EventVertical-cavity surface-emitting lasers XVI - San Francisco, CA, United States
Duration: 25 Jan 201226 Jan 2012

Publication series

NameSPIE proceedings
PublisherSPIE
Volume8276
ISSN (Print)0277-786X

Conference

ConferenceVertical-cavity surface-emitting lasers XVI
CountryUnited States
CitySan Francisco, CA
Period25/01/1226/01/12

Fingerprint

interrogation
surface emitting lasers
Bragg gratings
costs
cavities
fibers
sensors
detectors
photocurrents
photometers
gratings
tablets
polymers
plugs
foils
light sources
chips
photonics
mirrors
thin films

Bibliographical note

Graham C. B. Lee ; Bram Van Hoe ; Zhijun Yan ; Oliver Maskery ; Kate Sugden ; David Webb and Geert Van Steenberge "A compact, portable and low cost generic interrogation strain sensor system using an embedded VCSEL, detector and fibre Bragg grating", Chun Lei and Kent D. Choquette (eds) Proc. SPIE 8276, Vertical-Cavity Surface-Emitting Lasers XVI, 82760E (February 2, 2012).
Copyright 2012 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
http://dx.doi.org/10.1117/12.907810

Keywords

  • interrogation system
  • vertical-cavity surface-emitting laser
  • fibre Bragg grating
  • flexible polymer skin
  • microcontroller
  • low cost
  • dynamic
  • flexible optoelectronic package

Cite this

Lee, G. C. B., Yan, Z., Webb, D., Van Hoe, B., Maskery, O., Sugden, K., & 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 C. Lei, & K. D. Choquette (Eds.), Vertical-cavity surface-emitting lasers XVI [82760E] (SPIE proceedings; Vol. 8276). SPIE. https://doi.org/10.1117/12.907810
Lee, Graham C.B. ; Yan, Zhijun ; Webb, D. ; Van Hoe, Bram ; Maskery, Oliver ; Sugden, Kate ; Van Steenberge, Geert. / A compact, portable and low cost generic interrogation strain sensor system using an embedded VCSEL, detector and fibre Bragg grating. Vertical-cavity surface-emitting lasers XVI. editor / Chun Lei ; Kent D. Choquette. SPIE, 2012. (SPIE proceedings).
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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 µm 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.",
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Lee, GCB, Yan, Z, Webb, D, Van Hoe, B, Maskery, O, Sugden, K & 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 C Lei & KD Choquette (eds), Vertical-cavity surface-emitting lasers XVI., 82760E, SPIE proceedings, vol. 8276, SPIE, Vertical-cavity surface-emitting lasers XVI, San Francisco, CA, United States, 25/01/12. https://doi.org/10.1117/12.907810

A compact, portable and low cost generic interrogation strain sensor system using an embedded VCSEL, detector and fibre Bragg grating. / Lee, Graham C.B.; Yan, Zhijun; Webb, D.; Van Hoe, Bram; Maskery, Oliver; Sugden, Kate; Van Steenberge, Geert.

Vertical-cavity surface-emitting lasers XVI. ed. / Chun Lei; Kent D. Choquette. SPIE, 2012. 82760E (SPIE proceedings; Vol. 8276).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Lee GCB, Yan Z, Webb D, Van Hoe B, Maskery O, Sugden K et al. A compact, portable and low cost generic interrogation strain sensor system using an embedded VCSEL, detector and fibre Bragg grating. In Lei C, Choquette KD, editors, Vertical-cavity surface-emitting lasers XVI. SPIE. 2012. 82760E. (SPIE proceedings). https://doi.org/10.1117/12.907810