Jiayi Zhao, Yiying Gu, Jingjing Hu, Jian Li, Mingshan Zhao, Xiuyou Han. Tunable optoelectronic oscillator based on optically injected distributed-feedback semiconductor laser diode under subharmonic microwave modulation[J]. Infrared and Laser Engineering, 2021, 50(10): 20200457
- Infrared and Laser Engineering
- Vol. 50, Issue 10, 20200457 (2021)
Fig. 1. Schematic diagram of the optoelectronic oscillator of optically-injected-based semiconductor laser
Fig. 2. Principle of optically injected semiconductor laser
Fig. 3. Principle of subharmonic microwave modulation
Fig. 4. Measured 15.34 GHz signal spectrum without subharmonic microwave modulation OEO with a span of 2 GHz
Fig. 5. Frequency drifted 15.31 GHz microwave signal without subharmonic microwave modulation OEO with a span of 1 GHz
Fig. 6. Generated microwave signal spectrum of OEO at different frequencies
Fig. 7. Measured 15 GHz signal spectrum of the open-loop structure with a span of 2 MHz
Fig. 8. Measured 15 GHz signal spectrum of the OEO loop with a span of 2 MHz
Fig. 9. Measured 15 GHz signal spectrum of the OEO loop with a span of 10 MHz
Fig. 10. Measured phase noise of the generated 15 GHz microwave signals
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