SPIE Optics & Photonics Documents
Thank you for taking part in our talks during and besides SPIE Optics & Photonics 2019. Below you may find our talks for downloading.
Physical-Optics-Based Tolerance Analysis for Fiber Coupling Systems
Optical fibers are widely used for collecting and monitoring light signals in modern optical metrology systems. The use of fibers helps reduce the size of optical system and makes the interconnection between systems convenient. But on the other side, the design and analysis of systems containing fibers often go beyond traditional ray-optics modeling. Because the interaction between light and fibers, with core diameter only several micrometers, requires electromagnetic field solvers. In this work, we present a physical-optics-based modeling technique for the complete optical system, including large-scale lenses and micro-scaled optical fibers.
Modelling of Diffractive/Meta-Lenses Using Fast Physical Optics
The growing importance of diffractive and meta-lenses in modern optical systems makes it vital to investigate and understand their capabilities. They play an important role in various applications like imaging systems, laser-beam shaping, bio/medical-optics, etc. We propose methods for the modeling of diffractive and meta-lenses based on the concept of the fast-physical-optics approach. A diffractive or meta-lens can be modeled as a series of structures functioning locally (e.g. local gratings) on a base interface. Each local structure introduces a certain local phase modulation, and by putting all of them together, the lens functionality can be achieved. In our approach, the rigorous Fourier modal method (FMM), also known as the rigorous coupled wave analysis (RCWA), is applied for the analysis of the local micro-/nanostructures, with all vectorial effects and possible higher-order effects taken into consideration; then the phase modulations can be collected for the lens function modeling.
Polarization Effects Modeling with Field Tracing
In field tracing, light is represented in the form of electromagnetic field with all vectorial information, and various electromagnetic field solvers are used to modeling light interaction with different optical components. We present simulation examples on several polarization phenomena, for example, focusing light into birefringent crystal, using polarizer in non-paraxial situation, vectorial effect in tightly focused light, polarization conversion at sub-wavelength gratings, and so on
