The effect of the ambient temperature and refractive index on the spectral characteristics of long-period fiber gratings with a corrugated polymeric coating

摘要

This paper presents an experimental study of how external factors--the ambient temperature and refractive index--affect the transmission spectra in the resonance region of long-period fiber gratings with a corrugated polymeric coating. The influence of external effects on the spectral shift and amplitude of resonances is studied for the core and cladding modes of long-period gratings.