INFOTherm Events
Workshop on fibre-optic thermometry (October 20 2025)
A workshop on fibre-optic thermometry will be organised on October 20 2025 with the TEMPMEKO ISHM 2025 symposium in Reims. The scopes are basic principles and practical applications of fibre-optic thermometry. It is intended for those curious about the possibilities and challenges in the field.
Registration: https://www.infotherm.ptb.de/events/workshop-on-fibre-optic-thermometry
Stakeholder Meeting
The third stakeholder meeting of the INFOTherm project will take place on March 26 2025 at 12:30 - 14:30 CET. Contact us (e.g. using Contact) if you are interested in joining the stakeholder community.
Events with INFOTherm presentations
TEMPMEKO ISHM
TEMPMEKO ISHM symposium will take place in Reims October 20-24 2025. In addition to the Workshop on fiber-optic thermometry on Oktober 20 (see above), there will also be several more specialised contributions.
SolarPACES
The 31st SolarPACES Conference, the world’s leading conference on concentrating solar power, thermal and chemical energy systems, takes place in Almería September 23-26 2025.
29th International Conference on Optical Fiber Sensors
The 29th International Conference on Optical Fiber Sensors (OFS29) tkales place in Porto May 25-30 2025.
Measuring By Light 2025
Measuring By Light, an international meeting on optical measurement techniques and industrial applications, takes place in Delft April 1-3 2025.
International Metrology Congress (CIM 2025)
The International metrology congress CIM 2025 takes place March 11-14 2025.
Publications
We propose, and demonstrate, the use of a fiber-optical measurement artefact as a metrological tool for traceable distance calibration of distributed optical fiber sensors. The constructed fiber artefact consists of a lead-in fiber coupled to a fiber loop using a 3-dB coupler and is used to calibrate both a home-build Brillouin-OTDR setup and a custom version of a commercial Brillouin-OTDR interrogator build for distributed temperature sensing. For both interrogators, we demonstrate distance calibrations with 1-meter uncertainty (k=1) in the offset length and 0.1 % (1 m/km) uncertainty (k = 1) in the distance scale factor. In addition, it is shown that the fiber artefact can be used to assess undesired distance-dependent measurement biases.
Read online at https://doi.org/10.1364/OE.544659
The measurement and control of temperature plays a key role in achieving the European Green Deal targets for a low carbon energy system. Fibre-optic thermometry is an emerging technology that can improve temperature measurement in extreme environments for energy providers and industry due to its distributed sensing and immunity to electromagnetic fields. Various applications for optimisation and monitoring in the energy sector are described, covering the whole range from energy generation to transmission and consumption. However, fibre-optic thermometers have cross sensitivities to other quantities (e.g., strain and humidity) and ageing effects that need to be investigated, quantified and minimised to obtain traceable and reliable measurements. This is particularly important so that applications in critical infrastructure can benefit from future measurements that are not possible with conventional sensors. The European INFOTherm project aims to overcome the limitations that currently prevent the widespread use of fibre-optic thermometry by creating a dedicated European metrology infrastructure for research, development and calibration. First results on measurement uncertainty, improvement of measurement techniques and practical field tests are presented.
Read online at https://doi.org/10.1515/teme-2025-0044