LONG-BASE, STRETCHED FIBRE-OPTIC, BRAGG NETWORK EXTENSOMETER AND PRODUCTION METHOD FOR SAME

摘要

The invention relates to a long-base, stretched fibre-optic and Bragg network extensometer and a production method for same. According to the invention, which is particularly suitable for the surveillance of engineering structures, a part of the optical fibre (4) containing a Bragg network (R) is disposed in a tube (16); said part is stretched between the two ends of the tube; the ends of said part are fixed to the ends of the tube; said tube is intended to be solidly connected to a host material (2).