Non‐linear optical limiting technology based on backward stimulated Brillouin scattering in grade‐index optical fibres

Abstract

Abstract An effective non‐linear optical limiting technology is proposed here based on backward stimulated Brillouin scattering in grade‐index optical fibres. The excellent non‐linear optical limiting performance is experimentally verified by using 0.5 and 1 m grade‐index quartz fibres at the wavelength of 1064 nm. The linear transmittance for 0.5 and 1 m fibres are both beyond 96% and the lowest non‐linear transmittance are 6.1% and 1.5%, respectively. This is the best non‐linear optical limiting performance that can be achieved at present.

Keywords

• Stimulated Raman scattering and spectra; CARS; stimulated Brillouin and stimulated Rayleigh scattering and spectra
• Optical transient phenomena, self-induced transparency, optical saturation and related effects
• Gradient-index (GRIN) fibre devices and techniques
• Fibre optics
• Optical saturation and related effects