| Authors: | T. Ullrick, D. Deschrijver, D. Spina, W. Bogaerts, T. Dhaene | | Title: | Wavelength-tunable equivalent circuit models for SPICE-based photonic–electronic co-simulation | | Format: | International Journal | | Publication date: | 10/2025 | | Journal/Conference/Book: | Journal of Computational Electronics
| | Volume(Issue): | 25(2) | | DOI: | 10.1007/s10825-025-02448-6 | | Citations: | Look up on Google Scholar
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Abstract
This paper introduces a SPICE-compatible photonic–electronic co-simulation framework based on the complex vector fitting (CVF) algorithm, developed for accurate representation of multi-wavelength behavior in linear and passive photonic integrated circuits (PICs). The proposed wavelength-tunable equivalent circuit models feature a fixed network topology, yet comprise components whose values are parameterized with respect to the optical carrier frequency. This enables both frequency- and time-domain simulations at arbitrary wavelengths, making the framework particularly suited for modeling multi-wavelength photonic systems. To support intricate co-simulation with electronic subsystems, a novel interface circuit is introduced, allowing seamless interconnection with third-party active and passive SPICE models. The capability of the framework to capture complex photonic–electronic interactions is demonstrated through three application examples, highlighting its effectiveness for co-simulating photonic devices with control and receiver electronics. Related Research Topics
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