Abstract: A method and apparatus for monitoring changes in temperature or strain, using fiber Bragg gratings (FBG). The Method and apparatus is advantageously useful for the measurement under harsh conditions, such as by combustion turbines. The invention uses the wavelength shift which is caused by temperature or strain changes at the FBG and the changing of the refraction index of the fiber.

Abstract: A method and apparatus for monitoring changes in temperature or strain, using fiber Bragg gratings (FBG). The Method and apparatus is advantageously useful for the measurement under harsh conditions, such as by combustion turbines. The invention uses the wavelength shift which is caused by temperature or strain changes at the FBG and the changing of the refraction index of the fiber.

Abstract: A winding arrangement comprising at least one multi-layered winding body having a plurality of windings associated with a winding band and an optical waveguide, which is introduced therein or therethrough. The optical waveguide is wound into the winding body in the area where it is introduced therein and comprises, at least in the area, a light-guiding fiber and a protective layer applied thereto. The protective layer consists either entirely or partially of a layer of material having a maximum elasticity module of 2.5 GPa.

Abstract: The winding arrangement contains a multilayered winding body (91) consisting of a plurality of windings associated with a winding band (93) and an optical wave guide (30) which passes through the winding body (91) or is introduced into the winding body (91). The optical wave guide (30) is wound into the winding body (91) in the area (95) where it passes through or is introduced therein and comprises, at least in said area, a light guiding fiber (32) and a protective layer (33) applied thereto. The protective layer consists either entirely or partially of a layer of protective material having a maximum elasticity module of 2.5 Gpa.