Acta Optica Sinica, Volume. 41, Issue 19, 1906005(2021)
Generator of Signals with Quadruple Frequency and Triangular Waveform Tunable in Symmetry Based on Dual-Parallel Mach-Zehnder Modulator and Balanced Photodetector
Figures & Tables(7)
Fig. 2. Corresponding fitting error varying with symmetrical coefficient for N＝3, N＝6, and N＝9
Fig. 3. Time domain spectrum and frequency domain spectrum for δ＝50%. (a) Time domain spectrum；(b) frequency domain spectrum
Fig. 4. Comparison between simulation waveforms and ideal waveforms with symmetrical coefficients of 0%, 10%，20%, 30%, 40%, 60%, 70%, 80%, 90%, and 100%
Fig. 5. Comparison of fitting error corresponding to N＝3 with fitting error obtained by simulation
Table 1. Performance summary of functional waveform signal generation methods based on electro－optical method
View tableTable 1. Performance summary of functional waveform signal generation methods based on electro－optical method
Year Working principle Frequency doubling factor Waveform 2013 DD－MZM＋SMF[ 11 ]2 Triangle 2017 SD－MZM＋TDL[ 12 ]1 Triangle 2018 Cascaded MZMs[ 13 ]1 Square/triangle/sawtooth 2018 MZMs＋BPD[ 14 ]1 Sawtooth 2019 DP－MZM[ 15 ]1 Triangle 2020 PDM－DPMZM[ 16 ]1 or 2 Triangle/square 2020 SD－MZM＋EDFA[ 17 ]1 Sawtooth 2020 PM＋photonic－chip[ 18 ]1 Square/triangle/sawtooth
Table 2. Parameter setting for different asymmetrical coefficient δ
View tableTable 2. Parameter setting for different asymmetrical coefficient δ
δ /% b1 b2 b3 β τ 0 1.0099 0.5047 0.3362 5.08 27.56 10 1.0929 0.5197 0.3179 5.04 27.50 20 1.1694 0.4730 0.2102 4.85 27.55 30 1.2263 0.3604 0.0520 5.99 33.57 40 1.2614 0.1949 －0.0866 6.04 32.90 50 1.2732 0 －0.1415 3.71 25.00 60 1.2614 －0.1949 －0.0866 6.04 17.10 70 1.2263 －0.3604 0.0520 5.99 16.43 80 1.1694 －0.4730 0.2102 4.86 22.47 90 1.0929 －0.5197 0.3179 5.04 22.49 100 1.0099 －0.5047 0.3362 5.93 15.66
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Yuan Liu, Jing Li, Yongjiao He, Wei Zhu, Tigang Ning, Li Pei. Generator of Signals with Quadruple Frequency and Triangular Waveform Tunable in Symmetry Based on Dual-Parallel Mach-Zehnder Modulator and Balanced Photodetector[J]. Acta Optica Sinica, 2021, 41(19): 1906005
Paper Information
Category: Fiber Optics and Optical Communications
Received: Jan. 25, 2021
Accepted: Apr. 27, 2021
Published Online: Oct. 9, 2021
The Author Email: Li Jing (lijing@bjtu.edu.cn)
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