Investigation on quadrupling triangular-shaped pulses generator with flexible repetition rate tunability

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• 作者：Jin Yuan ; Tigang Ning ; Jing Li ; Li Pei ; Hongyao Chen…
• 关键词：Microwave photonic ; Triangular ; shaped pulse train ; Extinction ratio ; Bias drift
• 刊名：Optical and Quantum Electronics
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：48
• 期：3
• 全文大小：2,785 KB
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• 作者单位：Jin Yuan (1)
  Tigang Ning (1)
  Jing Li (1)
  Li Pei (1)
  Hongyao Chen (1)
  Chan Zhang (1)
  Yueqin Li (1)
  
  1. Key Lab of All Optical Network and Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing, 100044, China
  
• 刊物主题：Optics, Optoelectronics, Plasmonics and Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks;
• 出版者：Springer US
• ISSN：1572-817X

文摘

An optical triangular-shaped pulses generation structure using quadrupling RF modulation and active polarization control is proposed. The ultimate goal is to make the expression of optical intensity approximately equal to the Fourier expansion of ideal triangular-shaped waveform. In the proposal, the dual-parallel Mach–Zehnder modulator (DP-MZM) is operated at quadrupling RF modulation. Thus, repetition rate of the generated pulse train is four times of the driving frequency. By tuning the driving frequency of local oscillator, continuous tunability of the repetition rate (20, 30, 40 and 60 GHz) is obtained. Numerical simulations show that the finite extinction ratio and the bias drift of the DP-MZM should be within a range respectively to obtain triangular-shaped pulses. The merit of this proposal is that it can generate high order frequency-multiplexed optical pulses train with less complex parameter alignment.