The Theoretical Study Of Stimulated Brillouin Scattering Optical Storage Due To Acoustic Diffraction

Slow Light in modern applications, such as high-capacity datanetworks and modern technology, such as all-optical signal processing,optical buffer, and quantum computing has important applications opticalfiber makes optical communication develop rapidly due to its largecapacity and excellent transmission performance Methods of slow light Infiber include: Electromagnetically Induced Transparency (EIT), CoherentPopulation Oscillation(CPO), Stimulated Raman Scattering (SRS) andStimulated Brillouin Scattering (SBS) and so on. Electromagneticallyinduced transparency(EIT)is limited applied due to wavelength limit thenarrow spectral linewidth transparent window and low temperature;Coherent Population Oscillation(CPO) can only be achieved in narrowbands; Slow light based on Stimulated Brillouin scattering is widely usedbecause of some inherent advantages, such as room temperature, largesignal bandwidth, simple experiment, a high degree of integration in thecommunication system.In2007Zhaoming Zhu et al established a SBS optical storage modelin fiber,they successfully brought SBS bandwidth up to12.6GHz,the lightpulse are delayed by28ps. Stimulated Brillouin scattering coupled wave equations can be madedifferent simplification under different conditions. We have establishedstimulated Brillouin scattering coupled wave equations under thecondition of acoustic diffraction and discretized for a numerical solution.We have simulated the curve of the acoustic wave amplitude attenuation asthe function of optical fiber radius and select different time linear datapulse and control pulse to study the storage of acoustic diffraction andnon-diffraction. We found that as the radius increases, smaller theinfluence of acoustic diffraction to optical storage, storage efficiency arebasically the same as non-diffraction in the radius of6μ m. Rectangulardata pulse and Gaussian control pulse has minimum influence underacoustic diffraction.