Abstract
Shape optimization techniques were first developed in the context of mechanical engineering and, more recently, applied to photonic components for data communication. Here, motivated by the growing application potential of mid-infrared photonics driven by chemical sensing and spectroscopy, we present the design by shape optimization of passive components operating in this wavelength range. A focus is placed on the creation of designs that are fabricable and robust to manufacturing uncertainties.
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Notes
We deliberately ignore here the treatment of the radiative modes for convenience, but their consideration does not change the results presented in this section.
In a nutshell this adjoint equation corresponds to a Maxwell equation simulation, where the mode is injected from the output waveguide with a power proportional to the value of \(a_n^*\) (the propagating mode power considered in the objective \(J(\varOmega )\)). For more details see Lebbe et al. (2018).
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Acknowledgements
This research was partly funded by the European Union Project REDFINCH (E.U. H2020, No. 780240). Moreover, the authors are grateful to J.-M. Fedeli for his expertise regarding the technological platform and for his involvement in the future fabrication of the micro-components.
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Lebbe, N., Glière, A., Hassan, K. et al. Shape optimization for the design of passive mid-infrared photonic components. Opt Quant Electron 51, 166 (2019). https://doi.org/10.1007/s11082-019-1849-1
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DOI: https://doi.org/10.1007/s11082-019-1849-1