Na LIU, Li FAN, Guangqiong XIA, Zhengmao WU. Broadband Tunable Microwave Frequency Comb Generation Based on Modulated Optical Injection Semiconductor Laser[J]. Acta Photonica Sinica, 2022, 51(6): 0614002
- Acta Photonica Sinica
- Vol. 51, Issue 6, 0614002 (2022)
Fig. 1. Experimental setup for generating tunable broadband MFC
Fig. 2. Experimentally measured power-current curves and relaxation oscillation frequencies as a function of bias current for free-running DFB-SL1 and DFB-SL2，respectively
Fig. 3. Optical spectra（left column）and power spectra（right column）output from DFB-SL1，PM and DFB-SL2. The gray curves in power spectra denote the noise floor，and the resolution bandwidth（RBW）of ESA is 100 kHz
Fig. 4. SSB phase noise curves for fmod（red curves），13fmod（blue curves）and 22fmod（black curves）come lines，and SSB phase noises at 10 kHz frequency offset of representative fmod，4fmod，7fmod，10fmod，13fmod，16fmod，19fmod and 22fmod comb lines
Fig. 5. Optical spectra（left column）and power spectra（right column）output from DFB-SL2 with different Δf
Fig. 6. Bandwidth as a function of frequency detuning Δf
Fig. 7. Bandwidth as a function of injection power Pinj
Fig. 8. Power spectra of generated MFCs under different fmod
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