Low dimensions of contemporary micro-optics imply the necessity of inclusion of vector diffraction effects into optical models. Classical geometrical optics and Gaussian beam calculation approaches are too coarse approximations. They do not properly take into account all the diffraction phenomena. We have developed a new optical modeling tool (EM_LINK) based on the wave optics and separate propagation of each component of the electromagnetic field between optical surfaces. The software enables three-dimensional (3D) modeling of electromagnetic field propagation through optical systems. The method is very fast because no 3D discretization mesh is needed, and the Fast Fourier Transform is used when the optical source surface is flat. The software is well suited for analysis of the optical link between a VCSEL and a fiber or photodetector, taking into account the associated lenses. The VCSEL-fiber coupling efficiency and its dependence on the misalignment can be quickly and accurately calculated.
Journal: TechConnect Briefs
Volume: 1, Technical Proceedings of the 2002 International Conference on Modeling and Simulation of Microsystems
Published: April 22, 2002
Pages: 404 - 407
Industry sector: Sensors, MEMS, Electronics
Topic: Modeling & Simulation of Microsystems