Open AccessA all-optical switching based on highly nolinear photonic crystal fiber Sagnac loop mirror
Author(s) -
Jianguo Liu,
Guiyun Kai,
Xue Li-Fang,
Chunshu Zhang,
Yange Liu,
Zhi Wang,
Haitao Guo,
Yan Li,
Tingting Sun,
Yuan Shu-Zhong,
Dong Xiang
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.941
Subject(s) - optics , extinction ratio , physics , optical switch , photonic crystal fiber , nonlinear photonic crystal , photonics , materials science , optoelectronics , optical fiber , wavelength
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.