Lumerical Forum May 2026

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Stop simulating in isolation. The answer is waiting for you on the Lumerical Forum. lumerical forum

You will encounter the infamous “divergence due to high index contrast” error. You might see unexpected reflections from your PML boundaries. The forum is a living library of these failure modes. A quick search for the exact error code almost always yields a thread with a verified solution—often including a line-by-line script fix. Please Login to Report Topic

: When posting a new thread , include the specific Lumerical product version you are using and clearly describe the expected vs. actual results. Key Resources and Tags Cancel Save Reply as Draft Publish