All-optical sampling using nonlinear polarization rotation in a single semiconductor optical amplifier

作者：Zhang Shangjian^*; Zhang Qianshu; Li Heping; Liu Yongzhi; Liu Yong

来源：Pan Tao Ti Hsueh Pao/chinese Journal of Semiconductors, 2008, 29(6): 1031-1035.

• All-optical sampling
• Input polarization
• Linear dynamic range (LDR)
• Nonlinear polarization rotation (NPR)
• Operating parameters
• Operating power
• Optical (PET) (OPET)
• Optical powers
• Output intensity
• Polarization beam splitters
• Polarization controller (PC)
• Probe light
• Pump light
• Rate-equation models
• Sampling rate (SR)
• Simulated results

We propose a novel all-optical sampling method using nonlinear polarization rotation in a semiconductor optical amplifier. A rate-equation model capable of describing the all-optical sampling mechanism is presented in this paper. Based on this model, we investigate the optimized operating parameters of the proposed system by simulating the output intensity of the probe light as functions of the input polarization angle, the phase induced by the polarization controller, and the orientation of the polarization beam splitter. The simulated results show that we can obtain a good linear slope and a large linear dynamic range, which is suitable for all-optical sampling, The operating power of the pump light can be less than 1 mW. The presented all-optical sampling method can potentially operate at a sampling rate up to hundreds GS/s and needs low optical power.

• 出版日期2008
• 单位电子科技大学