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Authors: M. Fiers, T. Van Vaerenbergh, K. Caluwaerts, J. Dambre, P. Bienstman
Title: CAPHE: Time-domain and Frequency-domain Modeling of Nonlinear Optical Components
Format: International Conference Proceedings
Publication date: 6/2012
Journal/Conference/Book: Advanced Photonics Congress, 2012 OSA
Editor/Publisher: OSA, 
Volume(Issue): p.paper IM2B.3
Location: Colorado Springs, United States
DOI: 10.1364/iprsn.2012.im2b.3
Citations: 8 ( - last update: 21/7/2024)
5 (OpenCitations - last update: 10/5/2024)
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We present a tool for the modeling of optical circuits, both in the frequency and in the
time domain. The tool is based on the definition of a node, which can have both an instantaneous
input-output relation, as well as different state variables (e.g. temperature and carrier density) and
differential equations for these states. Furthermore, each node has access to part of its input
history, allowing the creation of delay lines or digital filters. Additionally, a node can contain sub-
nodes which can be used to create hierarchical networks. This tool can be used in numerous
applications such as frequency-domain analysis of optical ring filters, time-domain analysis of
optical amplifiers, microdisks and microcavities. Furthermore, it can be used to study the effect of
fabrication errors in nanophotonic integrated circuits. Although we mainly use this tool to model
optical circuits, it can also be used to model other classes of dynamical systems, such as neural
networks, financial modeling and electronical circuits.

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