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Chinese Optics, Volume. 17, Issue 4, 943(2024)

Noise figure measurement of terahertz mixer

Xing-yu TAO1, Wen-jie LIU1,2,3, Yue-hui SUN1,2,3, Fei-fei QIN1,2,3, Qing-e SONG4, Ze-yu ZHAO1, Li-juan LIU1, Tian-xiang CHEN1, and Yun-cai WANG1,2,3、*
Author Affiliations
  • 1Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • 2Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of Education of China, Guangdong University of Technology, Guangzhou 510006, China
  • 3Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China
  • 4Science and Technology on Electronic Test & Measurement Laboratory, Qingdao 266555, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (7)
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    References (22)
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    Figures & Tables(7)
    Schematic diagram of conversion of the optical signal to the electrical noise signal

    Fig. 1. Schematic diagram of conversion of the optical signal to the electrical noise signal

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    (a) Schematic diagram and (b) physical diagram of the noise source

    Fig. 2. (a) Schematic diagram and (b) physical diagram of the noise source

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    The relationship between the ENR and the photocurrent. (a) The trend of the ENR varying with photocurrent; (b) the frequency spectra under different photocurrents

    Fig. 3. The relationship between the ENR and the photocurrent. (a) The trend of the ENR varying with photocurrent; (b) the frequency spectra under different photocurrents

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    Schematic diagram of NF measurement device

    Fig. 4. Schematic diagram of NF measurement device

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    The power spectra when the ENR is 20 dB, 25 dB, and 30 dB

    Fig. 5. The power spectra when the ENR is 20 dB, 25 dB, and 30 dB

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    NF and gain when the ENR is 35 dB, 40 dB, and 45 dB

    Fig. 6. NF and gain when the ENR is 35 dB, 40 dB, and 45 dB

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    • Table 1. The values of each physical quantity

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      Table 1. The values of each physical quantity

      物理量δENRδNF12δNF2δGdB
      计算值0.27 dB0.38 dB0.38 dB0.27 dB
      物理量F1F2F12G
      测量值285.681.73311.580.03
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    Xing-yu TAO, Wen-jie LIU, Yue-hui SUN, Fei-fei QIN, Qing-e SONG, Ze-yu ZHAO, Li-juan LIU, Tian-xiang CHEN, Yun-cai WANG. Noise figure measurement of terahertz mixer[J]. Chinese Optics, 2024, 17(4): 943

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    Paper Information

    Received: Oct. 28, 2023

    Accepted: --

    Published Online: Aug. 9, 2024

    The Author Email:

    DOI:10.37188/CO.2023-0193

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