Spatial Mode Demultiplexing of Femtoecond-Inscribed Fiber Bragg Grating in Multi-Mode Fibers for High Temperature Sensing
Résumé
We report interrogation of one Fiber Bragg Grating sensor inscribed in Multi-Mode fiber with 45-mode spatial demultiplexer as well as monitoring of fifteen modes of nine different wavelength groups at temperatures steps up to 1000 °C.