FISO Technologies Inc. is a leading developer and manufacturer of fiber optic sensors and signal conditioners. Committed to providing customers with innovative and reliable solutions for measuring parameters such as temperature, pressure, displacement and position, strain and load as well as refractive index in harsh environments and challenging applications, FISO's targeted markets are medical, process control, energy and research laboratories.

Fiber optic sensors and probes are designed by experienced engineers and scientists who always have in mind the needs of our customers. We know that our customers are working in challenging environments and need products that are based on cutting-edge technology. One of our strongest competitive advantages is to be able to respond quickly to what our customers require and then customize, if necessary, our existing solutions. We strive as strongly as our customers to offer the best products and technologies. Besides its extreme accuracy, the advantages of fiber optics are: very high precision, intrinsically safe electrically, minimally invasive (nanotechnology), immunity to radio frequencies, electromagnetic interferences and microwave radiations.

Founded in 1994, the company is part of "The Roctest Group". Its products are sold in more than 75 countries through a network of representatives and distributors. Since 2003, FISO Technologies meets the requirements of the ISO 9001:2008 and ISO 13485:2003 certifications. The company is assessed and certified by BSI Group strictly applies its quality policy day after day.


Our products are used in different applications such as, but not limited to:


Fiber optic catheter-tip pressure sensor

  • intravascular blood pressure monitoring (FISO's pressure transducer in FDA approved device)
  • muscle compartment pressure monitoring (FISO's pressure transducer in FDA approved device)
  • intracranial pressure monitoring / intrauterine pressure monitoring
  • intervertebral disc pressure / intraocular pressure

Fiber optic temperature probe

  • patient temperature monitoring in MRI (FISO's temperature sensor in FDA approved device)
  • tissue temperature monitoring for microwave thermal therapy and RF ablation
  • animal physiological temperature monitoring

Process control:

  • temperature monitoring for microwave assisted chemistry
  • temperature monitoring for food development and research on pasteurization
  • temperature monitoring of surface during plasma etching
  • temperature monitoring for wood drying under MW
  • refractive index for oil concentration ratio measurement in cooling systems


  • temperature monitoring of hot spots in transformer windings
  • temperature monitoring of bus bars and switchgears
  • temperature monitoring of gas generators (stators) in power plants
  • position and displacement monitoring of moving components (LTC and others)

Research laboratories:

  • induced current measurement for HERO/RADHAZ testing of EED devices
  • temperature and pressure monitoring for remediation or bioremediation

Products / Produits