Reconfigurable microwave photonic mixer based on dual-polarization dual-parallel Mach–Zehnder modulator

We report a reconfigurable microwave photonic mixer with multiple functions and wide bandwidth. By changing the photodetection configuration, the mixer can be conveniently reconfigured to realize four functions: single-ended mixing, I/Q mixing, double balanced mixing and image rejection mixing. Furt...

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Bibliographic Details
Published in:Optics communications 2018-12, Vol.428, p.131-135
Main Authors: Shi, Zhan, Zhu, Sha, Li, Ming, Zhu, Ning Hua, Li, Wei
Format: Article
Language:English
Subjects:
Balanced mixer
DP-DPMZM
I/Q mixer
Image reject
Microwave photonics
Mixer
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Summary:We report a reconfigurable microwave photonic mixer with multiple functions and wide bandwidth. By changing the photodetection configuration, the mixer can be conveniently reconfigured to realize four functions: single-ended mixing, I/Q mixing, double balanced mixing and image rejection mixing. Furthermore, the filter-free system has a wide bandwidth and the ability to perform both frequency up-conversion and down-conversion. The proposed reconfigurable mixer is based on a dual-polarization dual-parallel Mach–Zehnder modulator (DP-DPMZM). The optical signal is modulated by the DP-DPMZM and split into two orthogonally polarized signals, which are combined by a 90° optical hybrid and detected by photodetectors. The experimental results show that the mixer has a wide bandwidth from 2 GHz to 30 GHz with a 30 dB spur suppression, and the image rejection ratio of the image rejection mixer is over 30 dB.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2018.07.055