Santagiustina M, Someda C G, Vadalà G, Combrié S, De Rossi A
CNIT, Dipartimento di Ingegneria dell’Informazione, Università di Padova, Padova, 35131, Italy.
Opt Express. 2010 Sep 27;18(20):21024-9. doi: 10.1364/OE.18.021024.
The equations for Four-Wave-Mixing in a Photonic Crystal waveguide are derived accurately. The dispersive nature of slow-light enhancement, the impact of Bloch mode reshaping in the nonlinear overlap integrals and the tensor nature of the third order polarization are therefore taken into account. Numerical calculations reveal substantial differences with simpler models, which increase with decreasing group velocity. We predict that the gain for a 1.3 mm long, unoptimized GaInP waveguide will exceed 10 dB if the pump power exceeds 1 W.
精确推导了光子晶体波导中的四波混频方程。因此，考虑了慢光增强的色散特性、非线性重叠积分中布洛赫模式重塑的影响以及三阶极化的张量特性。数值计算揭示了与更简单模型的显著差异，这种差异随着群速度的降低而增大。我们预测，如果泵浦功率超过1 W，对于一个1.3毫米长、未优化的GaInP波导，增益将超过10 dB。
