Open AccessObservation of stimulated Brillouin scattering in silica graded‐index multimode optical fibre based on pump‐probe technique
Author(s) -
Hayashi N.,
Mizuno Y.,
Nakamura K.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2012.4017
Subject(s) - brillouin scattering , multi mode optical fiber , optical fiber , optics , materials science , refractive index , index (typography) , scattering , optoelectronics , physics , computer science , world wide web
Based on the pump‐probe technique (PPT), stimulated Brillouin scattering (SBS) was observed in a 100 m‐long silica graded‐index multimode optical fibre with the same core diameter as that of a perfluorinated graded‐index polymer optical fibre (PFGI‐POF) (=50 µm). The SBS threshold was measured to be ∼50 mW, which was much lower than 5.08 W, the SBS threshold obtained for the same fibre without the PPT. This result indicates that the PPT is useful even under multimode conditions and that the difficulty in observing SBS in PFGI‐POFs consists not in their physical problems but in their material problems (high propagation loss etc.).