  The continuous growth in data volume has sparked interest in
silicon-organic-hybrid nanophotonic devices integrated into silicon photonic
integrated circuits (PICs). SOH devices offer improved speed and energy
efficiency compared to silicon photonics devices. However, a comprehensive and
accurate modeling methodology of SOH devices is lacking. While some preliminary
modeling approaches for SOH devices exist, their reliance on theoretical and
numerical methodologies, along with a lack of compatibility with electronic
design automation (EDA), hinders their seamless and rapid integration with
silicon PICs. Here, we develop a phenomenological, building-block-based SOH
PICs simulation methodology spanning from the physics to the system level,
offering high accuracy, comprehensiveness, and EDA-style compatibility. Our
model is also readily integrable and scalable, lending itself to the design of
large-scale silicon PICs. Our proposed modeling methodology is agnostic and
compatible with any photonics-electronics co-simulation software. We validate
this methodology by comparing experimentally demonstrated SOH microring
modulators and Mach Zehnder modulators with those obtained through simulation,
demonstrating its ability to model various modulator topologies. We also show
our methodology's ease and speed in modeling large-scale systems. As an
illustrative example, we use our methodology to design and study a 3-channel
SOH MRM-based wavelength-division (de)multiplexer, a widely used component in
various applications, including neuromorphic computing, data center
interconnects, communications, and sensing. Our modeling approach is compatible
with other materials exhibiting the Pockels and Kerr effects. To our knowledge,
this represents the first comprehensive physics-to-system-level EDA-compatible
simulation methodology for SOH modulators.
