TAGGED: Bragg-Grating, interconnect, laser
April 25, 2023 at 12:16 amssaei014Subscriber
Hi, I'm designing a DFB laser using TWLM model in Interconnect. For the first-order grating, I set the period equal to ~200 nm and get very good results:
I want to see the result of a third-order grating, meaning the pitch is now ~600 nm. I'm expecting to see a single-mode behaviour just like above, with maybe smaller SMSR. But the result is as below:
It doesn't see the grating and acts as a FP laser. How can I make sure high-order DFB is defined properly in Interconnect?
April 27, 2023 at 10:04 pmGuanhui WangAnsys Employee
At a glance, I think the approach you are using is correct. This looks to me to be a gain or grating transmission problem. Could you please contact support through email and share the file there? We can follow up the discussion there. Thank you.
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