OpTek provides a one-stop-shop for your high temperature fiber probes and assemblies. Using proprietary technology and novel materials, OpTek’s standard HT assemblies can withstand operating temperatures in excess of 700°C.

Standard constructions consist of plated fibers, fiberglass sleeving, stainless monocoiled jacketing, and ruggedized transitions for single and multi-fiber configurations. OpTek’s HT assemblies are application specific – designed to accommodate your interfacing hardware and packaging through custom collars, tubing, shrouds, and terminations. 

hight temperature probes

OpTek’s HT probes are in routine use around the world, holding up to the most challenging environments known to man.

Services offered include:

  • Design (optical and mechanical)
  • Manufacturing (Qualification, Assembly & Test)
  • Refurbishment

Demonstrated capabilities include:

  • Extreme temperatures (>700°C)
  • TIR, backscatter, transmission, interferometric, fluorescent
  • Forward- and Side-firing
  • Spot-probes, line-probes, structured-light
  • Quartz, Sapphire, Kovar, Inconel, SS, Gold, Copper

Processes Offered Include:

  • Stripping, Cleaving, Lensing, Facet-generation, End Capping &  Fusing
  • High temperature gratings
  • Solder, frit & proprietary high temperature sealing


  • Oil & Gas
  • Aerospace/MIL
  • Power Generation
  • Nuclear
  • Medical
ht probes

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