High-Efficiency >110-GHz-Bandwidth 4-Vppd InP-DHBT Linear Modulator Driver for Beyond-200-GBd Optical Transceivers
We report on a beyond-110-GHz bandwidth 4-Vppd output swing linear modulator driver, implemented in <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$0.5-\mu \mathrm{m}$</tex> indium phosphide (InP) double heterojunction bipolar transistors (DHBT). Using an R-C base ballast in the output stage, the opencollector driver shows reduced (excess) gain peaking, group delay variation and improved stability above 50 GHz. To the authors' knowledge, this driver achieves the highest reported output stage efficiency FoM of 7.4 GBd and the best complete-IC efficiency FoM (2.3 GBd) and THD (2.8% at 4 - Vppd) for beyond-100 - GHz bandwidth lumped drivers, without any Digital Signal Processing.
Authors
- Alexander Rylyakov
- Virginie Nodjiadjim (ORCID: https://orcid.org/0000-0002-2092-6201)
- A. Konczykowska (ORCID: https://orcid.org/0000-0003-4754-6396)
- Colin Mismer
- F. Blache
- F. Jorge (ORCID: https://orcid.org/0000-0002-0090-0872)
- Bertrand Ardouin (ORCID: https://orcid.org/0000-0003-0432-9818)
- Romain Hersent (ORCID: https://orcid.org/0000-0002-9958-2711)
- N. Davy
- Lorenzo Iotti (ORCID: https://orcid.org/0000-0002-9502-8289)
- M. Riet
Institutions
- Nokia (Finland) (FI)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Laboratoire d'Électronique des Technologies de l'Information (FR)
- III V Lab (FR)
Publication Details
- Published
- 2025-10-12
- DOI
- https://doi.org/10.1109/bcicts63111.2025.11211017
- Citations
- 1
- Primary Topic
- Radio Frequency Integrated Circuit Design
- Type
- article
- Field-Weighted Citation Impact
- 0.73