| Instantaneous frequency measurement using two parallel I/Q modulators based on optical power monitoring |
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| 作者姓名： | 王创业 宁提纲 李晶 裴丽 郑晶晶 张景川 |
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| 作者单位： | 1.Key Laboratory of All Optical Network and Advanced Telecommunication Network of EMC, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China;2.Beijing Institute of Spacecraft Environment Engineering, Beijing 100029, China |
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| 基金项目： | the National Key Research and Development Program of China(Grant No.2018YFB1801003);the National Natural Science Foundation of China(Grant Nos.61525501 and 61827817);the Beijing Natural Science Foundation,China(Grant No.4192022). |
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| 摘 要： | A scheme for instantaneous frequency measurement(IFM)using two parallel I/Q modulators based on optical power monitoring is proposed.The amplitude comparison function(ACF)can be constructed to establish the relationship between the frequency of radio frequency(RF)signal and the power ratio of two optical signals output by two I/Q modulators.The frequency of RF signal can be derived by measuring the optical power of the optical signals output by two I/Q modulators.The measurement range and measurement error can be adjusted by controlling the delay amount of the electrical delay line.The feasibility of the scheme is verified,and the corresponding measurement range and measurement error of the system under different delay amounts of the electrical delay line are given.Compared with previous IFM schemes,the structure of this scheme is simple.Polarization devices,a photodetector and an electrical power meter are not used,which reduces the impact of the environmental disturbance on the system and the cost of the system.In simulation,the measurement range can reach 0 GHz-24.5 GHz by adjusting the delay amount of the electrical delay lineτ=20 ps.The measurement error of the scheme is better at low frequency,and the measurement error of low frequency 0 GHz-9.6 GHz can reach-0.1 GHz to+0.05 GHz.
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| 关 键 词： | microwave photonics instantaneous frequency measurement optical power monitoring |
| 收稿时间： | 2021-04-30 |
Instantaneous frequency measurement using two parallel I/Q modulators based on optical power monitoring |
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| Chuangye Wang,Tigang Ning,Jing Li,Li Pei,Jingjing Zheng,Jingchuan Zhang.Instantaneous frequency measurement using two parallel I/Q modulators based on optical power monitoring[J].Chinese Physics B,2022,31(1):10702-010702. |
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| Authors: | Chuangye Wang Tigang Ning Jing Li Li Pei Jingjing Zheng Jingchuan Zhang |
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| Institution: | 1.Key Laboratory of All Optical Network and Advanced Telecommunication Network of EMC, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China;2.Beijing Institute of Spacecraft Environment Engineering, Beijing 100029, China |
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| Abstract: | A scheme for instantaneous frequency measurement (IFM) using two parallel I/Q modulators based on optical power monitoring is proposed. The amplitude comparison function (ACF) can be constructed to establish the relationship between the frequency of radio frequency (RF) signal and the power ratio of two optical signals output by two I/Q modulators. The frequency of RF signal can be derived by measuring the optical power of the optical signals output by two I/Q modulators. The measurement range and measurement error can be adjusted by controlling the delay amount of the electrical delay line. The feasibility of the scheme is verified, and the corresponding measurement range and measurement error of the system under different delay amounts of the electrical delay line are given. Compared with previous IFM schemes, the structure of this scheme is simple. Polarization devices, a photodetector and an electrical power meter are not used, which reduces the impact of the environmental disturbance on the system and the cost of the system. In simulation, the measurement range can reach 0 GHz-24.5 GHz by adjusting the delay amount of the electrical delay line τ =20 ps. The measurement error of the scheme is better at low frequency, and the measurement error of low frequency 0 GHz-9.6 GHz can reach -0.1 GHz to +0.05 GHz. |
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| Keywords: | microwave photonics instantaneous frequency measurement optical power monitoring |
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