基于移频外差的高速光电子器件自校准高频分析

doi:10.3969/j.issn.0255-8297.2020.04.008

Abstract

Abstract: High-speed optoelectronic devices are key elements for large-capacity optical fiber communication systems and wideband microwave photonic systems, in which the high-frequency characterization of optoelectronic devices is of importance for the precise signal conversion between optical domain and electrical domain. In this paper, we proposed a frequency-shifted heterodyne method based on optical heterodyne theory for mapping signal spectrum from optical domain to electrical domain, in order to obtain the joint analysis of optical spectrum and electrical spectrum in electrical domain. In experiments, we have successfully conducted self-calibrated high-frequency measurements with three devices including Mach-Zehnder modulators, phase modulators and photodetectors by carefully choosing the frequency relationship between the desired mapped electrical spectrum lines. The main characteristic of the devices, such as modulation index,half-wave voltages, chirp and responsivity are extracted. Experimental results indicate that our method is helpful for the wideband, high-resolution, multiparameter, self-calibration measurement of high-speed optoelectronic devices.

Key words: electro-optic modulators, photodetectors, frequency response, microwave photonics, optical heterodyne

CLC Number:

TN256

ZHANG Shangjian, WANG Mengke, ZHANG Yali, ZHANG Zhiyao, LIU Yong. Self-Calibrated High-Frequency Analysis of High-Speed Optoelectronic Devices by Frequency-Shifted Heterodyne[J]. Journal of Applied Sciences, 2020, 38(4): 630-639.

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Self-Calibrated High-Frequency Analysis of High-Speed Optoelectronic Devices by Frequency-Shifted Heterodyne

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