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Technology

We develop a novel optical fiber sensor system, which enable real-time monitoring of strain, humidity and temperature in points along an optical fiber.

 

SHUTE’s patented technology is based on a micro-structured Polymer Optical Fiber (POF) inscribed with Fiber Bragg Gratings (FBGs). FBG are a well-known technology that functions as sensor points along the POF.

 

Optical Fiber sensors are commercial available but have been up until now been based on glass. SHUTE is capable of producing Optical Fiber sensors made out of polymer, which creates novel capabilities.

 

Compared to existing fiber sensor solutions, our sensors are:

 

  • Very flexible and easy to embed in hard or soft materials
  • 1.5 times more sensitive to strain
  • 20 times more sensitive to stress
  • Stretchable – up to 6% elongation
  • Humidity sensitive
  • Biocompatible

 

In addition the sensors also have the well-known optical fiber advantages over traditional electrical sensors such as:

 

  • Immune to EMI
  • Very small size and lightweight
  • High precision sensing
  • Distributed sensing
What is an optical fibre sensor system?

 

  • A data collection unit and optical fibers
  • Sensors are distributed on the fiber/fibers
  • A single fiber can monitor and detect various parameters
  • A sensor system can include several fibers

 

A sensor system from SHUTE comprises of three sub systems:

 

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Complete solutions

 

SHUTE develops complete sensor solutions including interrogator, software and sensors. No prior experience in working with Optical Fibers is necessary to benefit from such a system. Contact SHUTE to learn more and discuss your needs.

 

Technical specifications

 

  • Strain resolution:                                                             0,001 %
  • Strain operating range:                                                  0 – 6%
  • Humidity minimum detection limit:                            0,5 % RH
  • Humidity operating range:                                            10 % – 100 % RH
  • Temperature minimum detection limit:                     0,5 °C
  • Temperature operating range:                                    -20 °C – 80°C
  • Youngʼs Modulus:                                                            3.2 GPa
  • Biocompatible:                                                                 Yes
  • Sampling rate:                                                                  200 Hz – 1 KHz
  • Number of Sensing Points:                                            1 – 10
  • Sensing Point Length:                                                     5 mm
  • Plastic Fiber length:                                                        1 – 6 m
  • Transport glass fiber length (fiber extension):         1-50 m

 

Publications

 

1. High Sensitivity Polymer Optical Fiber-Bragg-Grating-BasedAccelerometer. / Stefani, Alessio ; Andresen, Søren; Yuan, Wu; Herholdt-Rasmussen, Nicolai; Bang, Ole. In: I E E E Photonics Technology Letters, Vol. 24, No. 9, 2012, p. 763-765.

 

2. Humidity insensitive TOPAS polymer fiber Bragg grating sensor. / Yuan, Scott Wu; Khan, Lutul; Webb, David J.; Kalli, Kyriacos; Rasmussen, Henrik K.; Stefani, Alessio; Bang, Ole. In: Optics Express, Vol. 19, No. 20, 2011, p. 19731-19739.

 

3. Single mode step-index polymer optical fiber for humidity insensitive high temperature fiber Bragg grating sensors. / Woyessa, Getinet; Fasano, Andrea; Stefani, Alessio ; Markos, Christos; Nielsen, Kristian; Rasmussen, Henrik K.; Bang, Ole. In: Optics Express, Vol. 24, No. 2, 2016, p. 1253-1260.

 

4. Low Loss Polycarbonate Polymer Optical Fiber for High Temperature FBG Humidity Sensing. / Woyessa, Getinet; Fasano, Andrea; Markos, Christos; Rasmussen, Henrik K.; Bang, Ole. In: I E E E Photonics Technology Letters, Vol. 29, No. 7, 2017, p. 575-578.

 

5. Zeonex microstructured polymer optical fiber: fabrication friendly fibers for high temperature and humidity insensitive Bragg grating sensing. / Woyessa, Getinet; Fasano, Andrea; Markos, Christos; Stefani, Alessio ; Rasmussen, Henrik K.; Bang, Ole. In: Optical Materials Express, Vol. 7, No. 1, 2017, p. 286.

 

6. Zeonex-PMMA microstructured polymer optical FBGs for simultaneous humidity and temperature sensing. / Woyessa, Getinet; Pedersen, Jens Kristian Mølgaard; Fasano, Andrea; Nielsen, Kristian; Markos, Christos; Rasmussen, Henrik K.; Bang, Ole.