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September 18, 2022 at 7:26 pm
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September 19, 2022 at 3:24 pmGuilin SunAnsys Employee
This is numerical error due to discretization. You may increase the simulation span along the bending direction. You can also correct this negative loss by allowing mode propagating in the negative direction, eg, real(neff) is negative. In most cases it is ok to have the fake "gain" as you know it is due to error.
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September 20, 2022 at 5:48 pmGuilin SunAnsys Employee
For Lumerical products, please write post here Photonics (ansys.com)Â which is a dedicated forum for Lumerical products.
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