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Passive Fiber Modules

Scientific profile

Passive fiber optic modules based on special optical fibers of various glass and crystal materials and geometries are the key components of numerous photonic systems. For the functionalization and investigation of the fiber-optic components of such modules we use high-resolution optical structuring methods (especially laser exposures), specially adapted assembly and interconnection techniques as well as numerous characterization methods. Research activities focus on the development and investigation of fiber optic modules for the life sciences and the further development of fiber Bragg gratings (FBG) for sensor technology. In addition, components from FBGs and FBG arrays for tunable fiber lasers are developed in close cooperation with other groups. Fiber optic modules for extreme application conditions (e.g. temperatures >1000°C) and in shape sensors as well as new structural concepts and evaluation units for miniaturized fiber sensor components are also being researched. 

Scheme of an optical Fiber Bragg Grating
Typical Laser inscription set up for FBG
Scheme of the “Draw Tower Inscription” of FBG , developed in IPHT

Research topics

  • Design and realization of fiber optic modules in special optical fibers 
  • extensive characterization of fiber optic modules (spectral, thermal, mechanical and long-term behavior)
  • Basic research on long-term stability and temperature stability of fiber optic modules such as fiber Bragg grating sensors
  • Simulation of innovative effects in passive fiber optical modules
  • Method development for the fabrication and characterization of fiber optic modules and fiber components 

Application fields

  • Life sciences esp. medical technology
  • Sensors /Biophotonics
  • Laser Technology/Fiber Optic Light Sources
  • Information Technology/Telecommunications

The application potential of passive fiber modules ranges from pressure catheters in medical technology, to position determination of catheters, filters for noise suppression in Raman sensors, monitoring of overhead railway lines, the realization of resonators in fiber lasers, to high-temperature diagnostics.

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