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Theoretical research on new photoelectric mixing technology based on electro-optical modulation
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Paper Abstract

For the current photoelectric mixing technology, there are many problems such as small array size, high noise level and poor receiving stability. Combined with the idea of microwave photonic down-conversion technology, this paper proposes a new photoelectric mixing technology based on electro-optical modulation. Using high-resolution, low-cost, mature 2D sensors and electro-optical modulators to perform mixed-frequency demodulation at the optical level, not only overcomes the limitations of array size on image resolution, but also has the advantages of high energy utilization and high signal-to-noise ratio. A mathematics model was set up with the mixing efficiency and mixing signal-to-noise ratio as the key performance parameters. The influence of the operating point offset, modulation depth, and incident optical power on the performance parameters was analyzed. The results show that taking into account the mixing efficiency, IF signal amplitude and mixing signal-to-noise ratio, the electro-optic modulator works best when the modulation depth is at the maximum at the standard operating point, which are laying a theoretical foundation for the further research.

Paper Details

Date Published: 15 November 2018
PDF: 7 pages
Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109640I (15 November 2018); doi: 10.1117/12.2504239
Show Author Affiliations
Yuming Bu, Space Engineering Univ. (China)
Zhaoyang Zeng, Space Engineering Univ. (China)
Xiaoping Du, Space Engineering Univ. (China)
Yishuo Song, Space Engineering Univ. (China)

Published in SPIE Proceedings Vol. 10964:
Tenth International Conference on Information Optics and Photonics
Yue Yang, Editor(s)

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