Lanfeng Huang, Yongjun Li, Shanghong Zhao, Tao Lin, Taijiang Zhang, Haiyan Zhao. Microwave Instantaneous Frequency Measurement Based on Single Lightpath Polarization Multiplexing[J]. Laser & Optoelectronics Progress, 2021, 58(19): 1929002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 19, 1929002 (2021)
Fig. 1. Microwave instantaneous frequency measurement system structure based on single lightpath polarization multiplexing
Fig. 2. The selective PM-to-IM conversion schematic based on SBS
Fig. 3. Mapping relationship between sweep frequency detection signal fs and OPM sampling optical power.（a） fx=5 GHz;（b） fx=15 GHz
Fig. 4. System simulation data measurement results. (a) Comparison of input frequency and measurement frequency; (b) absolute measurement error and relative measurement error between input frequency and measurement frequency
Fig. 5. Influence of pump wavelength fluctuation on the drift of Brillouin frequency shift
Fig. 6. Influence of polarization state shift on measurement results. (a) Comparison of input frequency and measurement frequency; (b) error between input frequency and measurement frequency
Fig. 7. The influence of the phase shift of the electrical phase shifter on the DSB-SC signal sideband and OSSR.(a) 0°; (b) 5°; (c) 10°; (d) 15°
Fig. 8. The influence of DC bias point drift on ±1st order sideband power and OSSR
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