| 宋宇辉,孙粤辉,李璞,赵泽宇,刘丽娟,沈伊人,刘文杰,王云才.140~220 GHz 光子太赫兹噪声源[J].电子测量与仪器学报,2025,39(6):134-141 |
| 140~220 GHz 光子太赫兹噪声源 |
| 140~220 GHz photonic terahertz noise source |
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| DOI： |
| 中文关键词: 噪声源 超噪比 光子混频 光电探测器 太赫兹 |
| 英文关键词:noise source excess noise ratio photo-mixing photodetector terahertz |
| 基金项目:国家重点研发(2020YFB1806401)、国家自然科学基金(61927811)、珠江人才引进计划(2019ZT08X340)项目资助 |
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| Author | Institution |
| Song Yuhui | 1.Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology,
Guangzhou 510006, China; 2.Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of
Education of China, Guangdong University of Technology, Guangzhou 510006, China; 3.Guangdong Provincial Key Laboratory
of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China |
| Sun Yuehui | 1.Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology,
Guangzhou 510006, China; 2.Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of
Education of China, Guangdong University of Technology, Guangzhou 510006, China; 3.Guangdong Provincial Key Laboratory
of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China |
| Li Pu | 1.Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology,
Guangzhou 510006, China; 2.Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of
Education of China, Guangdong University of Technology, Guangzhou 510006, China; 3.Guangdong Provincial Key Laboratory
of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China |
| Zhao Zeyu | 1.Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology,
Guangzhou 510006, China; 2.Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of
Education of China, Guangdong University of Technology, Guangzhou 510006, China; 3.Guangdong Provincial Key Laboratory
of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China |
| Liu Lijuan | 1.Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology,
Guangzhou 510006, China; 2.Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of
Education of China, Guangdong University of Technology, Guangzhou 510006, China; 3.Guangdong Provincial Key Laboratory
of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China |
| Shen Yiren | 1.Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology,
Guangzhou 510006, China; 2.Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of
Education of China, Guangdong University of Technology, Guangzhou 510006, China; 3.Guangdong Provincial Key Laboratory
of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China |
| Liu Wenjie | 1.Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology,
Guangzhou 510006, China; 2.Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of
Education of China, Guangdong University of Technology, Guangzhou 510006, China; 3.Guangdong Provincial Key Laboratory
of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China |
| Wang Yuncai | 1.Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology,
Guangzhou 510006, China; 2.Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of
Education of China, Guangdong University of Technology, Guangzhou 510006, China; 3.Guangdong Provincial Key Laboratory
of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China |
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| 中文摘要: |
| 太赫兹噪声源是高频器件噪声系数测试和性能评估的重要工具。传统基于电子学的固态噪声源由于受到电子器件带宽的限制，难以实现高超噪比且功率谱平坦的太赫兹噪声输出，从而限制其在更高频段的应用。为解决这一问题，基于光子学方法研制太赫兹噪声源样机，利用两束非相干光在高速光电探测器上进行光子混频，可以产生频率范围覆盖140~220 GHz，最高超噪比达47 dB，平坦度小于±2.0 dB的太赫兹噪声，可通过改变光功率实现超噪比调谐。此外，对样机的运行稳定性及输出重复性进行了测试，结果表明该样机在12 h运行中的超噪比输出稳定度为0.35 dB，10次开关机的输出重复度为0.39 dB。为了进一步验证噪声源样机的性能，测量了混频器模块的噪声系数，测量结果的不确定度小于0.48 dB。光子太赫兹噪声源的研制提升了我国噪声源的最高工作频率,为太赫兹器件的设计和优化提供了必备的测试仪器。 |
| 英文摘要: |
| Terahertz noise sources are critical tools for noise figure measurement and performance evaluation of high-frequency devices. Traditional solid-state noise sources based on electronics face challenges in achieving high excess noise ratio (ENR) and flat power spectral characteristics due to the bandwidth limitations of electronic components, restricting their application in higher frequency bands. To address this issue, this study developed a prototype terahertz noise source using photonic methods. By utilizing two beams of incoherent light for photo-mixing in a high-speed photodetector, the system generates terahertz noise with a frequency range of 140~220 GHz, a maximum ENR of 47 dB, and a flatness better than ±2.0 dB. The ENR can also be tuned by adjusting the optical power. Stability tests show that the prototype maintains an ENR stability of 0.35 dB over 12 hours of continuous operation and an output repeatability of 0.39 dB over 10 power cycles. Additionally, the noise figure of a mixer module was measured using the noise source, with the measurement uncertainty being less than 0.48 dB. The development of this photonic terahertz noise source has increased the maximum operating frequency of noise sources in China, providing essential testing instruments for the design and optimization of terahertz devices. |
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