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A all-optical switching based on highly nolinear photonic crystal fiber Sagnac loop mirror

Liu Jian-Guo Kai Gui-Yun Xue Li-Fang Zhang Chun-Shu Liu Yan-Ge Wang Zhi Guo Hong-Lei Li Yan Sun Ting-Ting Yuan Shu-Zhong Dong Xiao-Yi

A all-optical switching based on highly nolinear photonic crystal fiber Sagnac loop mirror

Liu Jian-Guo, Kai Gui-Yun, Xue Li-Fang, Zhang Chun-Shu, Liu Yan-Ge, Wang Zhi, Guo Hong-Lei, Li Yan, Sun Ting-Ting, Yuan Shu-Zhong, Dong Xiao-Yi
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  • Received Date:  16 May 2006
  • Accepted Date:  08 August 2006
  • Published Online:  26 January 2007

A all-optical switching based on highly nolinear photonic crystal fiber Sagnac loop mirror

  • 1. 南开大学现代光学研究所,天津 300071

Abstract: We designed a novel and low switching-power all-optical fiber switch. The highly nonlinear photonic crystal fiber and the bi-directional pumped Er-doped fiber amplifier are inserted into the Sagnac loop mirror simultaneously. The switching is realized based on cross-phase modulation because the symmetry of the loop is broken. The theoretical analysis shows that the switching-power is inverse proportional to the product of the amplifier gain and the nonlinear coefficient of the photonic crystal fiber. In our experiment, 40 mW switching-power and 15.9 dB switching-extinction are obtained; furthermore, the transmission of signal light is a cosine function of the peak power of the control pulse. All the results of experiment well agree with the theory.

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