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All-optical image switch based on bacteriorhodopsin film
Authors:Guiying Chen  Xin Liang  Yizhe Yuan  Guang Yang  Chunping Zhang  Tang Xu  QW Song
Institution:aLED, South China Sea Institute of Oceanology, Chinese Academy of Science, Guang Zhou 510301, PR China;bPhysics Department, Tianjin University of Science & Technology, Tianjin 300222, PR China;cPhotonics Center, Institute of Physics, Nankai University, 300072, PR China
Abstract:While two waves are coupled in bacteriorhodopsin (bR) film, a beam of incident light carrying the image is transferred to two diffraction beams whose intensities can increase from zero to a maximum and then decrease to a stable value with the increase of the writing time. Based on the relation among the polarization states of image in a recording beam and diffraction beams, we have proposed and demonstrated the all-optical image transfer switch which depends on the effective time and has the function that within the effective time, a polarization state image is automatically transferred to two images whose polarization states are perpendicular, and the transfer stops automatically beyond the effective time. A time-dependent all-optical image switch with muti-outputs is implemented.
Keywords:bR film  Time dependent  All optical logic gates
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