Photonic instantaneous microwave frequency measurement with adjustable measurement range based on an electro-optical polarization modulator

2020 ◽  
Vol 59 (7) ◽  
pp. 1808
Author(s):  
Yanting Guo ◽  
Jianxin Ma
Keyword(s):  
Microwave Frequency ◽  
Frequency Measurement ◽  
Measurement Range ◽  
Optical Polarization ◽  
Polarization Modulator

Photonic microwave frequency measurement with a tunable range based on a dual-polarization modulator

2016 ◽  
Vol 55 (31) ◽  
pp. 8727 ◽  
Author(s):  
Xiaoyan Li ◽  
Aijun Wen ◽  
Xiaoming Ma ◽  
Wei Chen ◽  
Yongsheng Gao ◽  
...  
Keyword(s):  
Microwave Frequency ◽  
Frequency Measurement ◽  
Dual Polarization ◽  
Polarization Modulator ◽  
Tunable Range

scholarly journals Photonic Remote Microwave Frequency Measurement With a Tunable Measurement Range Based on Dispersion Compensation Technology

2021 ◽  
Author(s):  
Qingqing Meng ◽  
Zihang Zhu ◽  
Tao Lin ◽  
He Li ◽  
Guodong Wang ◽  
...  
Keyword(s):  
High Frequency ◽  
Dispersion Compensation ◽  
Microwave Frequency ◽  
Frequency Measurement ◽  
Measurement Range ◽  
Processing Unit ◽  
High Frequency Range ◽  
Frequency Range ◽  
Bias Drift ◽  
The Impact

Abstract In this paper, a novel and efficient photonic-assisted remote frequency measurement (RFM) system with a significantly simplified structure and flexible operation range is proposed. By simply changing the dispersion coefficient or length of the dispersion medium in the central station (CS), the microwave frequency measurement range in the remote antenna unit (RAU) can be tuned. In this system, the RAU and the CS is separated to ensure the concealment and safety of the signal processing unit. The measurement range of the RFM system can be tuned easily during the measurement process without system reconstruction, and different RAUs located at different places can be controlled to work at the same measurement range. The simulation results show that a frequency measurement over the high frequency range (>18 GHz) can be achieved with a measurement error better than ±0.2 GHz. Noteworthy, the impact of the non-ideal factors such as bias drift, intensity noise, phase noise, the equivalent deviation of the polarization beam splitter (PBS), and the dispersion value of the single mode fiber (SMF) is also discussed. It has been proved that they have little influence on the system performance over the high frequency range.

scholarly journals A Compact Multifrequency Measurement System Based on an Integrated Frequency-Scanning Generator

2020 ◽  
Vol 10 (23) ◽  
pp. 8571
Author(s):  
Nuannuan Shi ◽  
Tengfei Hao ◽  
Wei Li ◽  
Ming Li
Keyword(s):  
Measurement System ◽  
Measurement Errors ◽  
Microwave Frequency ◽  
Frequency Measurement ◽  
Measurement Range ◽  
Single Frequency ◽  
Laser Array ◽  
Large Bandwidth ◽  
Frequency Scanning ◽  
Mapping Technology

A compact multifrequency measurement system based on frequency-to-time mapping technology is proposed and experimentally demonstrated using an integrated frequency scanning signal generator. The relationship between the input microwave frequency and the time difference of a pair of pulses is established to realize the frequency information mapping to the time information. As a main part in the proposed frequency measurement system, the frequency-scanning signal is generated by heterodyning of two lasers with the monolithic integrated laser array, of which one is modulated on a saw-tooth signal. In the proposed frequency measurement system, it can measure single/multiple frequency microwave signals with a large bandwidth for high resolution and flexible tunable measurement range for multifrequency band. In the experimental demonstration, the single frequency measurement errors are less than 90 MHz within the measurement range from 4 to 12 GHz. For two-tone signal, the measurement resolution reaches about 150 MHz.

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