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Predistortion for High-Speed Lumped Silicon Photonic Mach-Zehnder Modulators
Open accessAbstract
The use of electrical precompensation for high-speed operation of lumped MZMs is demonstrated for 50 Gb/s PAM4 modulation through experiment and simulation. An accurate equivalent circuit model is fitted to S11 measurements and then used to analyse design trade-offs in terms of system performance, energy consumption and drive voltage requirements. If precompensation is not used, careful selection of source resistance with respect to electrode and packaging inductance is shown to be crucial for high-speed modulation. Increasing the electrode inductance is shown to be beneficial as it introduces inductive peaking, which allows optimum performance with a higher source impedance. Furthermore, combining precompensation with a slight inductive peaking and optimised source resistance is demonstrated to reduce drive voltage requirements and further reduce the energy dissipated in the equivalent circuit.
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“Currently, the commercial market is dominated by such devices, in the form of traveling-wave MZM modulators52.”
From Roadmapping the next generation of silicon photonics (2024) · cites this paper as [52]
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Metadata
- Authors
- Murray, B., Antony, C., Talli, G., & Townsend, P. D.
- Affiliations
- Tyndall National Institute (IE)
- Huawei Technologies (Germany) (DE)
- Venue
- IEEE Photonics Journal
- Published
- 2022-04
- Volume
- 14
- Issue
- 2
- Pages
- 1-11
- ISSN
- 1943-0647 (ISSN-L)
- 1943-0655
- OpenAlex
- W4226424550
- Cited by
- 13
- References
- 41
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 4 · 2023: 2 · 2022: 3
- FWCI
- 0.75
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- IEEE photonics journal (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Funders
- Science Foundation Ireland (12/IA/1270, 12/RC/2276)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Photonic and Optical Devices
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Photonic Communication Systems
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Semiconductor Lasers and Optical Devices
- Keywords
- predistortion, Mach-Zehnder modulator, silicon photonics, PAM-4, equivalent circuit model, source resistance, inductive peaking, drive voltage reduction, energy consumption, high-speed modulation
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