For the paper “Femtosecond Laser Aided Processing of Optical Sensor Fibers for 3D Medical Navigation Tracking (FiberNavi)” Fraunhofer HHI has received the Best Paper Award of the International Conference on Optical Fibre Sensors.
In association with the Klinikum rechts der Isar and the Technical University Munich, Fraunhofer HHI in Goslar has developed a method based on femtosecond (ultrashort) laser technology by which waveguides and periodic modulations of the refractive index can be directly written in both the core and the cladding of optical fibres. This method enables fabrication of a large array of microscopically small, freely adaptable optical force/strain sensors both outside the core and inside a single fibre.
Evaluation of the strain/compression measurement data renders the 3D profile of the instrument in real-time. With tailored interfaces, these can easily be turned into a 3D image which the user can deploy for navigation of the instrument. For the first time this method makes it possible to use standard single-mode fibre to capture a 3D profile. In the realm of medical technology, passive three dimensional capture of the profile and form of mechanical objects by optical fibre sensor systems opens up totally new possibilities for the navigation and positioning of surgical instruments within the human body.
The international conference on optical fibre sensors (OFS) is the world’s leading conference on all fields of photonic sensor technology. The OFS offers a lively forum for presentation of the latest advances in optical fibre and photonic sensor technologies and related technologies.
The series of conferences are held every 18 months and rotate between North America, Europe, and Asia. The 23rd OFS takes place from 2-6 June 2014 and is held in Spain for the first time.
The conference programme covers all aspects of light-exploiting sensor systems. Particular attention is paid to fibre optics, sensor elements based on guided light waves, measurement systems, theories and techniques for science, and applications in the fields of industry, life science and medicine, oil and gas industries and materials and armaments industries.