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Appl. Sci. 2016, 6(12), 395; doi:10.3390/app6120395

Optimization of Silicon MZM Fabrication Parameters for High Speed Short Reach Interconnects at 1310 nm

Commissariat à l’Energie Atomique, University of Grenoble Alpes, MINATEC Campus, Grenoble 38040, France
Centre de Nanosciences et de Nanotechnologies (C2N), Université Paris Sud, CNRS, Université Paris Saclay, Orsay 91405, France
Author to whom correspondence should be addressed.
Academic Editor: Paolo Minzioni
Received: 21 October 2016 / Revised: 15 November 2016 / Accepted: 23 November 2016 / Published: 29 November 2016
(This article belongs to the Special Issue Silicon Photonics Components and Applications)
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Optical modulators are key components to realize photonic circuits, and Mach-Zehnder modulators (MZM) are often used for high speed short reach interconnects. In order to maximize the tolerable path loss of a transmission link at a given bitrate, the MZM needs to be optimized. However, the optimization can be complex since the overall link performance depends on various parameters, and, for the MZM in particular, implies several trade-offs between efficiency, losses, and bandwidth. In this work, we propose a general and rigorous method to optimize silicon MZM. We first describe the optical link, and the numerical method used for this study. Then we present the results associated to the active region for 1310 nm applications. An analytical model is generated, and allows us to quickly optimize the p-n junction depending of the targeted performances for the MZM. Taking into account the required optical link parameters, the maximum tolerable path losses for different length of MZM is determined. By applying this method, simulations show that the optimum MZM length for 25 Gbps applications is 4 mm with an efficiency of 1.87 V·cm, 0.52 dB/mm of losses. A tolerable path loss of more than 25 dB is obtained. View Full-Text
Keywords: silicon photonics; Mach-Zehnder Modulators; optical communictions; short reach Interconnects silicon photonics; Mach-Zehnder Modulators; optical communictions; short reach Interconnects

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Abraham, A.; Anfray, T.; Dubray, O.; Fowler, D.; Olivier, S.; Marris-Morini, D.; Charbonnier, B. Optimization of Silicon MZM Fabrication Parameters for High Speed Short Reach Interconnects at 1310 nm. Appl. Sci. 2016, 6, 395.

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