Microwave Frequency Measurement Based on Optical Power Monitoring Using a Complementary Optical Filter Pair

2009 ◽  
Vol 57 (2) ◽  
pp. 505-511 ◽  
Author(s):  
Xihua Zou ◽  
Hao Chi ◽  
Jianping Yao
2011 ◽  
Vol 31 (3) ◽  
pp. 0306002
Author(s):  
邹喜华 Zou Xihua ◽  
潘炜 Pan Wei ◽  
罗斌 Luo Bin ◽  
闫连山 Yan Lianshan ◽  
郑狄 Zheng Di

2020 ◽  
Vol 38 (8) ◽  
pp. 2285-2291
Author(s):  
Jing Li ◽  
Li Pei ◽  
Tigang Ning ◽  
Jingjing Zheng ◽  
Yujian Li ◽  
...  

2019 ◽  
Vol 9 (2) ◽  
pp. 328 ◽  
Author(s):  
Shijie Song ◽  
Xiaoke Yi ◽  
Lu Gan ◽  
Wenjian Yang ◽  
Linh Nguyen ◽  
...  

We present a novel technique based on matrix pencil assisted deconvolution to improve the measurement resolution in scanning receiver systems for microwave frequency measurements. By modeling the scanning receiver output as the cross-correlation of the input modulated signal with the filter’s spectral response and applying the matrix pencil algorithm to convolve the detected optical signal at the receiver output, our technique offers precise estimations of both the frequency and power information of microwave signals with an improved measurement resolution. A multi-tone microwave signal measurement based on an optical filter is experimentally demonstrated, showing a significant measurement resolution reduction from 1 GHz to 0.4 GHz for two radio frequency (RF) tones, which is only about 30.2% of the optical filter bandwidth.


2021 ◽  
Author(s):  
Yulin Zhu ◽  
Beilei Wu ◽  
Jing Li ◽  
Muguang Wang ◽  
Shiying Xiao ◽  
...  

Abstract We propose and analyze an instantaneous frequency measurement system using optical power monitoring technique with improved resolution. The primary component employed in the proposal is a DP-QPSK modulator which is used to modulate the microwave signal with a designed time delay and phase shifting. Then the generated optical signal is sent to polarization beam splitter (PBS) via polarization controller (PC). Thanks to the complementary transmission nature of polarization interference introduced by PBS, the frequency information is converted to the optical power and the relationship between the amplitude comparison function (ACF) and microwave frequency to be measured is established. Thus, the frequency of the microwave signal could be easily measured through monitoring the optical powers of the two output ports of the PBS. Furthermore, by adjusting the DC biases of the DP-QPSK modulator instead of changing the electrical delay, the measurement range and resolution can be switched. In this paper, the basic principle of the instantaneous frequency measurement system is derived in detail, and simulation has been performed to investigate the resolution, the measurement range and the impact of imperfection devices. The proposed scheme is wavelength independent and measurement range switchable, which can avoid the laser wavelength drifting problem and greatly increase the system flexibility.


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