Jones Richard, Rong Haisheng, Liu Ansheng, Fang Alexander, Paniccia Mario, Hak Dani, Cohen Oded
Opt Express. 2005 Jan 24;13(2):519-25. doi: 10.1364/opex.13.000519.
We observe for the first time net continuous wave optical gain in a low loss silicon-on-insulator waveguide based on stimulated Raman scattering. We show that nonlinear optical loss due to two-photon absorption induced free carrier absorption can be significantly reduced by introducing a reverse biased p-i-n diode in the waveguide. For a 4.8 cm long waveguide with an effective core area of ~1.6 microm2, we obtain a net CW Raman gain of > 3dB with a pump power of ~700mW inside the waveguide.
我们首次在基于受激拉曼散射的低损耗绝缘体上硅波导中观测到净连续波光增益。我们表明，通过在波导中引入反向偏置的p-i-n二极管，可以显著降低由双光子吸收诱导的自由载流子吸收所导致的非线性光学损耗。对于一个有效纤芯面积约为1.6平方微米、长度为4.8厘米的波导，在波导内泵浦功率约为700毫瓦的情况下，我们获得了大于3分贝的净连续波光拉曼增益。
