Peng Di, Zhang Zhiyao, Zeng Zhen, Zhang Lingjie, Lyu Yanjia, Liu Yong, Xie Kang
Opt Express. 2018 Mar 19;26(6):6519-6531. doi: 10.1364/OE.26.006519.
We demonstrate a single-shot photonic time-stretch digitizer using a dissipative soliton-based passively mode-locked fiber laser. The theoretical analysis and simulation results indicate that the dissipative soliton-based optical source with a flat spectrum relieves the envelope-induced signal distortion, and its high energy spectral density helps to improve the signal-to-noise ratio, both of which are favorable for simplifying the optical front-end architecture of a photonic time-stretch digitizer. By employing a homemade dissipative soliton-based passively mode-locked erbium-doped fiber laser in a single-shot photonic time-stretch digitizer, an effective number of bits of 4.11 bits under an effective sampling rate of 100 GS/s is experimentally obtained without optical amplification in the link and pulse envelope removing process.
我们展示了一种使用基于耗散孤子的被动锁模光纤激光器的单次光子时间拉伸数字化仪。理论分析和仿真结果表明，具有平坦光谱的基于耗散孤子的光源减轻了包络引起的信号失真，并且其高能量谱密度有助于提高信噪比，这两者都有利于简化光子时间拉伸数字化仪的光学前端架构。通过在单次光子时间拉伸数字化仪中采用自制的基于耗散孤子的被动锁模掺铒光纤激光器，在链路和脉冲包络去除过程中无需光放大的情况下，实验获得了在100 GS/s有效采样率下4.11比特的有效比特数。
