OTG-M170 Fiber Optic Temperature Sensor

GaAs-Based Fiber Optic Temperature Sensor for Tip Measurement Applications

OpSens’ OTG-M170 fiber optic temperature sensor offers the smallest optical temperature sensor in the industry. The OTG-M170 sensor uses the well proven technique based on the temperature-dependent bandgap of GaAs crystal as the temperature transduction mechanism. Its small sensing GaAs crystal located at the tip of the optical fiber makes it convenient for tip measurement applications.

Combined with OpSens’ GaAs signal conditioning technology and with the inherent advantages of fiber optic, the OTG-M170 delivers unprecedented repeatability and reliability in the most adverse conditions such as high level of EM, RF, MR, NMR and microwave field environments.

The OTG-M170 is made with industry standard optical fiber and is compatible with all OpSens’ GaAs signal conditioners. This compact and robust fiber optic temperature sensor is available with different optical cables and sheath options and is customizable according to customer specific applications or for OEM-type applications


  • Fastest response time
    Smallest and robust design
  • Good accuracy and outstanding repeatability
  • MRI (<1.5T)/EMI/RFI and microwave immune
  • Intrinsically safe
  • OEM-type and custom version


  • Catheter designs
  • RF, ultrasound and electro surgery environments
  • Temperature monitoring for preclinical and research applications
  • Surface and core temperature monitoring in MRI environments

Ordering Information

Ref / Catalog Number Order Number (GTIN) Description

This website uses cookies to ensure you get the best experience on our website.