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All-Optical Switches and All-Optical Bistability by Nonlinear Optical Materials

  • K. Sasaki (a1), S. Sasaki (a1) and O. Furukawa (a1)

Abstract

All-optical switches and all-optical bistabili ties are realized by waveguide structures with vacuum evaporated polydiacetylene(PDA) films. The basic structure of the all-optical switches are prepared in the form of layered waveguide directional coupler with vacuum evaporated PDA top layer. Clearly switchings are observed at 1064nm of pulsed Nd:YAG laser. Furthermore ultra-high speed switching with Ti;Safire 135fs laser are recognized.

Operations of all-optical bistabilities are carried out by nonlinear coupling at grating structures in waveguides with PDA top layers. Hysterisis curves of bistability are affected by coupling parameters of gratings and parameters of waveguides.

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All-Optical Switches and All-Optical Bistability by Nonlinear Optical Materials

  • K. Sasaki (a1), S. Sasaki (a1) and O. Furukawa (a1)

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