Press the arrow on the STRUCTURES button and select CIRCLE from the pull-down menu. The physical structure of step index fiber modelled are created using the STRUCTURES tab in the Layout Editor. You can also download the step_index_fiber.lms file in the download section of this KBA. In this section, we will create the step-index fiber Open Lumerical launcher and select a finite-difference eigenmode (FDE) solver. These files are typically saved in the \POP\BEAMFILES directory so you can find the file there.Ĭreate the fiber structure for mode calculation Without the Polarization, beam is scalar then needs to use script command to load the zbf file in Lumerical. Please select the Use Polarization check box to define the vectorial beam. Next, set the name of the file to be Fiber_output.zbf. Press the Settings option on the top of the Physical Optics Propagation window and then select the Display tab and click on the "Save Output Beam To:" option. Later we will need to import in Lumerical. Fiber coupling calculated with input waist of 6 micron is 95 percent at the receiver endįrom here we can tell OpticStudio to output the beam files. The Beam waist calculated at image plane is 5.8787 micron with a Rayleigh range of 0.1mm. Select Analysis.Physical Optics to see a 6-micron input waist Gaussian being focused on the image plane of the lens system: The Image plane act as the receiver input end of Fiber has material with a refractive index of 1.43 and AR coating COAT I.99 which reflects 1% and transmits 99%. You can select any of the analysis features, including the 2D layout to see how the rays focus on a point. In this section, we begin by opening up OpticStudio. This tutorial assumes some familiarity with the Lumerical software. In this example, we will look at the coupling from a focusing lens into a small silica fiber via the Lumerical Eigenmode solver software. Lumerical’s finite-difference eigenmode (FDE) solver can be used to determine the physical properties of the optical modes supported by an arbitrary waveguide geometry. This can be useful for multi-stage cases in which one part of the system is efficiently simulated in OpticStudio, and other parts (like waveguides, photonic crystals, etc.) require electromagnetic propagation tools. This tutorial illustrates how to convert information from OpticStudio into Lumerical Eigenmode solver software. This Mode will be exported to OpticStudio back from Lumerical as Zemax Beam File. Overlap analysis between the beams will suggest a better mode from Lumerical modal analysis. We will export our polarized beam as a Zemax Beam File (.zbf) to Lumerical Eigen Mode Solver and calculate the overlap and Power coupling between modes created in Lumerical Eigen Mode Solver and exported Zemax beam. In this example, we will look at the coupling from a focusing lens into a small silica fiber. This can be useful for multi-stage cases in which one part of the system is a bulk optical system and a waveguide in others. This tutorial illustrates how to convert information from OpticStudio into Lumerical’ s finite-difference eigenmode (FDE) solver.
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