Hybrid Time-and-Frequency-Domain approach for modeling photonic integrated circuits
S. Mingaleev, E. Sokolov, C. Arellano, I. Koltchanov, and A. Richter,
Proc. IEEE 11th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), paper ThA4, pp. 183-184 (2011).
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Modern simulators of photonic integrated circuits (PICs) employ either frequency-domain or time-domain approaches for system-level modeling of PICs. We critically examine limitations of both approaches that obstruct their usage for simulations of large-scale PICs, and suggest an efficient hybrid alternative. Within this new approach clusters of connected linear PIC elements are modeled in frequency domain, while interconnections between such clusters and non-passive PIC elements are modeled in time domain.
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