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Proceedings Paper

A complete design flow for silicon photonics
Author(s): James Pond; Chris Cone; Lukas Chrostowski; Jackson Klein; Jonas Flueckiger; Amy Liu; Dylan McGuire; Xu Wang
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Paper Abstract

Broad adoption of silicon photonics technology for photonic integrated circuits requires standardized design flows that are similar to what is available for analog and mixed signal electrical circuit design. We have developed a design flow that combines mature electronic design automation (EDA) software with optical simulation software. An essential component of any design flow, whether electrical or photonic, is the ability to accurately simulate largescale circuits. This is particularly important when the behavior of the circuit is not trivially related to the individual component performance. While this is clearly the case for electronic circuits consisting of hundreds to billions of transistors, it is already becoming important in photonic circuits such as WDM transmitters, where signal cross talk needs to be considered, as well as optical cross-connect switches. In addition, optical routing to connect different components requires the introduction of additional waveguide sections, waveguide bends, and waveguide crossings, which affect the overall circuit performance. Manufacturing variability can also have dramatic circuit-level consequences that need to be simulated. Circuit simulations must rely on compact models that can accurately represent the behavior of each component, and the compact model parameters must be extracted from physical level simulation and experimental results. We show how large scale circuits can be simulated in both the time and frequency domains, including the effects of bidirectional and, where appropriate, multimode and multichannel photonic waveguides. We also show how active, passive and nonlinear individual components such as grating couplers, waveguides, splitters, filters, electro-optical modulators and detectors can be simulated using a combination of electrical and optical algorithms, and good agreement with experimental results can be obtained. We then show how parameters, with inclusion of fabrication process variations, can be extracted for use in the circuit level simulations. Ultimately, we show how a multi-channel WDM transceiver can be created, from schematic design to tapeout, using key features of EDA design flows such as schematic driven layout, design rule checking and layout versus schematic.

Paper Details

Date Published: 1 May 2014
PDF: 17 pages
Proc. SPIE 9133, Silicon Photonics and Photonic Integrated Circuits IV, 913310 (1 May 2014); doi: 10.1117/12.2052050
Show Author Affiliations
James Pond, Lumerical Solutions, Inc. (Canada)
Chris Cone, Mentor Graphics Corp. (United States)
Lukas Chrostowski, The Univ. of British Columbia (Canada)
Jackson Klein, Lumerical Solutions, Inc. (Canada)
Jonas Flueckiger, The Univ. of British Columbia (Canada)
Amy Liu, Lumerical Solutions, Inc. (Canada)
Dylan McGuire, Lumerical Solutions, Inc. (Canada)
Xu Wang, Lumerical Solutions, Inc. (Canada)

Published in SPIE Proceedings Vol. 9133:
Silicon Photonics and Photonic Integrated Circuits IV
Laurent Vivien; Seppo Honkanen; Lorenzo Pavesi; Stefano Pelli; Jung Hun Shin, Editor(s)

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