OSI-S High-precision Distributed Optical Fiber Sensing Monitoring System



The OSI-S is a high-precision distributed optical fiber sensing monitoring system. Its principle is based on optical frequency domain reflection (OFDR) technology. Strain and temperature can be captured with mm spatial resolution over the entire sensing fiber. The system is designed to be suitable for various types of sensors, such as conventional single-mode fiber and weak reflective FBG array. Its measurement accuracy is ±0.1℃ or ±1.0με. The OSI-S can simultaneously measure tens of thousands of sensing points along a single fiber. It is an excellent tool for high resolution and accuracy sensing applications.


  • Ultra-high measurement accuracy and spatial resolution
  • Excellent stability by self-calibration without user intervention
  • Shape sensing can be used for deformation measuring
  • Beside the standard size, portable version of OSI-S is optional
  • Single-mode fiber and weak reflective FBG array are both available
  • The customized service is supported, such as dynamic demodulation and multi-channel upgrades
  • Lead length can be adjusted between zero and 1km by customization for remote measurement


  • Structural health monitoring
  • Composite material fatigue testing
  • Strain and temperature testing for automobile structure
  • Strain and temperature field reconstruction


Basic Parameters
Sensing Length 1 100 m
Lead length 2 0 ~ 1 km
Smallest Spatial Resolution 3 1 m
Sensor 4 Various types of optical fibers /
Accuracy 5 ±1.0 με
Measurement Range ±12000 με
Accuracy 5 ±0.1
Measurement Range 6 -200~1200
Input Voltage AC 220/110V;DC 12V
Power 60 W
Communication Interface USB
Optical Fiber Connector FC/APC
Standard Dimension D385*W345*H165 mm
Standard Weight 7.5 kg
Portable Dimension D275*W195*H160 mm
Portable Weight 4.75 kg
Storage temperature 0 ~ 50
Operating Temperature 10 ~ 40
Relative Humidity <90 %RH


  1. Sensing length can be extended, please contact us.
  2. The lead length of standard product is zero, and other length can be customized for remote measurement.
  3. Smallest spatial resolution is 1mm,1mm/ 2mm/ 5mm/ 1cm/ 2cm is switchable.
  4. Suitable for multiple types of sensors, single-mode fiber and weak reflective FBG arrays are suggested.
  5. The accuracy (±1.0με/±0.1℃) is obtained under 1cm spatial resolution.
  6. Temperature measurement range is related to the material property of optical fiber sensor. Acrylate optical fibers is used for 0℃~100℃, Polyimide optical fibers for 50℃~300℃ and Au coated optical fibers for -200℃~700℃.
All Information given here is reliable to our best knowledge. No responsibility is assumed for possible inaccuracies or omissions. Specifications and external appearances are subject to change without notice.