📄 Whitepapers¶
Welcome to the VirtualLab Fusion Whitepapers - a new addition to our documentation center. These technical documents explain the concepts, theory, and validated approaches behind our simulation capabilities.
While tutorials teach you how to accomplish specific tasks and use cases demonstrate what is possible, whitepapers go deeper into the why and how it works: the physics, the numerical methods, and the design principles that make our digital twins accurate and reliable.
The collection below is just the beginning - more whitepapers will be added over time.
📑 List of Whitepapers¶
| Title | Abstract |
|---|---|
| From Phase to Structure - A Two-Step Design Workflow with Wavefront Phase Modifier Twins | This white paper introduces a two-step design workflow: first define the phase, then build the structure. At the heart of this workflow is the function-based Wavefront Phase Modifier (WPM) twin family in VirtualLab Fusion. A WPM twin adds a prescribed wavefront phase profile to an incoming field on a plane or curved surface. This lets you explore system performance with idealized phase elements – fast, flexible, and without committing to a physical structure. Once the phase profile is optimized, you transfer it to a structure-based twin – HOE, metalens, or refractive/ reflective surface – to realize the design physically. This paper introduces the concept, the available twin variants, and the workflow that connects phase design to physical realization. For a high-level introduction to the Digital Twin Platform concept, see the overview paper series.a |
| Simulation of Waveguides for AR Glasses and HUD | This white paper addresses the simulation of waveguides for AR glasses and head-up displays (HUDs). It covers four essential physical effects: propagation of coherent fields through lens systems (non-paraxial where required), polarization-dependent grating modeling via RCWA, diffraction at grating region boundaries (aperture effects), and temporal coherence from finite source bandwidth via OPL tracking. The paper presents simulation results comparing coherent and partially coherent illumination, with and without diffraction, validated against experimental MTF measurements. The underlying methods — field decomposition, LPIA, RCWA, aperture diffraction, and OPL tracking — are implemented in VirtualLab Fusion's Digital Twin Platform, where all components share a common electromagnetic field representation. The paper concludes with a set of essential questions for evaluating any simulation approach for AR/HUD waveguides. |
| Designing and Analyzing the Phase Response of Metasurfaces | We're in the middle of refreshing this white paper. If you'd like the most up-to-date information before then, just drop us a line at support@lighttrans.com – we'll make sure you get it. |
| Surrogate Modeling: Enabling Practical Metalens Design and Simulation | We're in the middle of refreshing this white paper. If you'd like the most up-to-date information before then, just drop us a line at support@lighttrans.com – we'll make sure you get it. |
📖 What to Expect from a Whitepaper¶
Whitepapers in this collection are technical documents that:
- Explain the physics behind an application area or simulation method
- Describe validated approaches - what works, why, and under which assumptions
- Provide context for the decisions made in our use cases and solution guides
- Reference the underlying methods as implemented in VirtualLab Fusion
💬 Feedback¶
Is there a topic you would like to see covered in a future whitepaper?
📧 Email: support@lighttrans.com
Happy reading!