Observation of stimulated Brillouin scattering in silica graded‐index multimode optical fibre based on pump‐probe technique. Issue 5 (1st February 2013)

• Record Type: Journal Article
• Authors: Hayashi, N.; Mizuno, Y.; Nakamura, K.
• Is Part Of: Electronics letters. Volume 49:Issue 5(2013)
• Page Start: 366
• Page End: 367
• Publication Date: 2013-02-01
• Subjects: distance; distributed sensors -- fibre optic sensors -- gradient index optics -- high‐speed optical techniques -- optical fibre losses -- optical fibre testing -- optical pumping -- polymer fibres -- silicon compounds -- stimulated Brillouin scattering; stimulated Brillouin scattering -- silica graded‐index multimode optical fibre -- pump‐probe technique -- PPT -- perfluorinated graded‐index polymer optical fibre -- PFGI‐POF -- SBS threshold -- propagation loss -- optical fibre sensors -- distributed Brillouin sensors -- distance 100 m; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2012.4017
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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.).