- This topic has 6 replies, 3 voices, and was last updated 9 years, 11 months ago by
Damian Marek.
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April 14, 2015 at 3:49 am #19687
Alvin Hui
ParticipantI am going to carry out a simulation of propagation loss in straight and bent waveguide. Can any one suggest what simulation tool is suitable. I have tried to use the OptiFDTD by placing observation lines over prolonged waveguide and obtain the power remained in the waveguide at that location. However, no accurate result was obtained until the waveguide was over 100 micrometers. Can anyone suggest proper method for the study as well. Thanks!
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April 14, 2015 at 9:10 am #19697
Damian Marek
ParticipantOptiBPM would be an excellent tool here, if the loss is relatively low and the bends are not very sharp.
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April 15, 2015 at 1:00 am #19720
Alvin Hui
ParticipantThanks Damian!! Could you define more how is “the bends are not very sharp”. I would like to determine the bending with curvature radius down to 1 micrometer. The cases of bending includes 90 degrees, 180 degrees (i.e. like a u-turn) and 360 degrees (i.e. a closed ring). Will it be possible to use OptiBPM to simulate the bending losses of the abovementioned cases?
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April 15, 2015 at 8:48 am #19734
Damian Marek
ParticipantIn this case I would say they are too sharp! Now what you could do is run the OptiBPM simulation for the straight section of the waveguide and then import the field into OptiFDTD and simulate the bend with the other method. Then you could bring the results back in to OptiBPM.
Regards
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May 4, 2015 at 3:44 am #20344
Dr. MohammadMahdi Ariannejad
ParticipantI also have problem with bend wave guide a lot loss any how to change the radius still alot loss, anyway to describe this?
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May 10, 2015 at 8:18 am #20668
Dr. MohammadMahdi Ariannejad
Participantwith s bend still I can see alot loss how to fix this? would you please let me know is there any optimization in this software or not and how to use optimization? thanks
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May 12, 2015 at 2:01 pm #20741
Damian Marek
ParticipantThe largest bend that you can perform depends also on the waveguide structure and material. Highly confined waveguides may actually cause more error when using the BPM numerical engine.
Please attach your project and I can make some suggestions.
Regards
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