Improvement of linearity in intensity-modulated analog photonic link based on all-optical wave shaping

In this paper, a novel all-optical architecture for multi-order nonlinear distortions (NDs) suppression in the intensity-modulation direct-detection (IM-DD) analog photonic link (APL) is proposed. A systematic analysis of the relationship between the NDs and all optical sidebands (OSBs) is summarize...

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Bibliographic Details
Published in:Optik (Stuttgart) 2023-04, Vol.276, p.170623, Article 170623
Main Authors: Lei, Ruichen, Wu, Ruihuan, Liu, Hongzhan
Format: Article
Language:English
Subjects:
All-optical wave shaping
Analog photonic
Intensity-modulation
Linearization
Spurious free dynamic range
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Summary:In this paper, a novel all-optical architecture for multi-order nonlinear distortions (NDs) suppression in the intensity-modulation direct-detection (IM-DD) analog photonic link (APL) is proposed. A systematic analysis of the relationship between the NDs and all optical sidebands (OSBs) is summarized. Numerical simulation results show that, by optimizing the amplitude and phase of OSB, the 3rd-order intermodulation distortion (IMD3) can be significantly suppressed. Consequently, the spurious-free dynamic range (SFDR) of 107.1 dBHz8/9 is obtained, which is improved by 16.17 dB compared with a single quadrature biased Mach–Zehnder modulator (MZM) used in APL.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2023.170623