Li Liu, Jinlong Yu, Ju Wang, Chuang Ma, Tianyuan Xie, Yang Yu, Jie Fang, Haitao Peng. Linear Frequency-Modulated Signal Generation Based on Optoelectronic Oscillator Combined with Electrical Frequency-Selected Cavity[J]. Laser & Optoelectronics Progress, 2020, 57(3): 032301
- Laser & Optoelectronics Progress
- Vol. 57, Issue 3, 032301 (2020)
Fig. 1. Schematic of generating LFM signal based on OEO
Fig. 2. Simulation of electrical frequency-selected cavity. (a) Spectrum; (b) spectrum of frequency-selected cavity with length variation
Fig. 3. Diagram of generating LFM signal based on OEO. (a) Electrical frequency-selected cavity; (b) OEO cavity; (c) final oscillation frequency
Fig. 4. Output microwave signal of the electrical frequency-selected cavity. (a) Spectrum, RSPAN=1 MHz; (b) phase noise
Fig. 5. Comparison of microwave signal generated by the proposed system and OEO. (a) Spectrum, RSPAN=250 kHz; (b) phase noise
Fig. 6. LFM signal. (a) Time-domain waveform; (b) spectrum, RSPAN=1 GHz
Fig. 7. LFM signal. (a) Frequency-voltage diagram; (b) frequency-time diagram
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