The fiber structure on the basis of the segment double-clad fiber as a temperature sensor and a tension

Investigated optical fiber structure based on the transformation of core and cladding modes, the relationship between them occurs at the junction of two fibers with different refractive index profiles. Structure is formed by inserting a segment of single-mode fiber with a small core SM630 and double-clad fibers between two standard SMF- 28. Measured transmission spectra of the proposed structure as it is heated and tension. The values ​​of sensitivity of 10 pm / oC and pm / με