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Proceedings Paper

Self-referenced electrical method for measuring frequency response of high-speed Mach-Zehnder modulators based on two-tone modulation
Author(s): Heng Wang; Shangjian Zhang; Xinhai Zou; Yali Zhang; Yong Liu
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Paper Abstract

We demonstrated a self-referenced electrical method for measuring frequency response of high-speed Mach-Zehnder modulators (MZMs) based on two-tone modulation. The modulation index and half-wave voltage can be extracted from the heterodyne ratio of two desired components by properly adjusting bias voltage. The method achieves the electrical domain measurement of the frequency-dependent modulation indices and frequency-dependent half-wave voltages of MZMs without any extra calibration for the responsivity fluctuation in the photodetection. Moreover, it reduces half bandwidth requirements of photodetector and electrical spectrum analyzer by carefully choosing a half frequency relationship of two-tone microwave signals. The consistency between our method and the optical spectrum analysis method verifies the simple but accurate measurement.

Paper Details

Date Published: 9 November 2016
PDF: 6 pages
Proc. SPIE 10017, Semiconductor Lasers and Applications VII, 100170X (9 November 2016); doi: 10.1117/12.2247663
Show Author Affiliations
Heng Wang, Univ. of Electronic Science and Technology of China (China)
Shangjian Zhang, Univ. of Electronic Science and Technology of China (China)
Xinhai Zou, Univ. of Electronic Science and Technology of China (China)
Yali Zhang, Univ. of Electronic Science and Technology of China (China)
Yong Liu, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 10017:
Semiconductor Lasers and Applications VII
Ninghua Zhu; Werner H. Hofmann, Editor(s)

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