光子晶体光纤参量放大的理论模拟  

Simulation of Optical Parametric Amplification Using Holey Fiber

作　　者：倪屹[1] 王青[1] 张磊[1] 刘小明[1] 彭江得[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《中国激光》2004年第3期310-312,共3页Chinese Journal of Lasers

摘　　要：光子晶体光纤具有高非线性系数和非常灵活的色散特性 ,通过调节光子晶体光纤的结构参量 ,可在具有高非线性系数的同时对光子晶体光纤的零色散波长 (λ0 )进行调节。利用光子晶体光纤的这些特性可实现在所需波长上的高效率的参量放大。本文采用厄密 高斯函数展开的方法 ,计算了六角形光子晶体光纤 (HF)的零色散波长 ,发现当气孔间距在 1 1μm和 2 6 μm之间时 ,光子晶体光纤的零色散波长在 1 5 5 μm附近 ,并给出了零色散波长时气孔间距和气孔大小的关系曲线。对光子晶体光纤中的参量放大 (OPA)进行了理论模拟 ,计算表明在 2 0m光子晶体光纤中 ,当峰值功率为 10W时 ,参量放大的增益可达 6 0dB ,或可获得 30Holey fiber (HF) can have high nonlinearity and very flexible dispersion. The zero-dispersion wavelength (λ 0) of HF with high nonlinearity can be adjusted by changing the structure parameters of PCF. This can used to generate high efficient optical parametric amplification (OPA) at desired wavelength in HF. Hermite-Gaussian functions have been used to calculate the zero-dispersion wavelength of hexagon HF, calculations show that when pitch is between 1.1 μm and 2.6 μm, the λ 0 of HF is around 1.55 μm, and the relation of pitch vs air hole diameter at λ 0 has been given. Simulations of the OPA in HF show that gain of OPA can reach 60 dB in only 20 m HF with pump power of 10 W, or the bandwidth of OPA can reach 300 nm.

关 键 词：光电子学 光子晶体光纤 色散 色散斜率 参量放大 理论模拟 

分 类 号：TN253[电子电信—物理电子学]