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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › Asymmetric Heating and Cooling Thermal time constant › Reply To: Asymmetric Heating and Cooling Thermal time constant

September 2, 2024 at 5:43 pm
ensiye
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Hi Khash,

Thank you for your response. I’ve attached a PowerPoint and my simulation file for your reference. In my simulation, I don’t use a shutter step for on/off; instead, I use the transient simulation by adjusting the time on/off as shown in the figs in the PowerPoint https://drive.google.com/file/d/1LN_NG5NwpR3mZX89tWDZ4yIk4q4bE1Tp/view?usp=drive_link. For measurement, the photonic chip is mounted on a PCB with a gold exposed pad, but there’s no metal pad inside the chip for heat dissipation. The chip is wire-bonded with silver glue to the PCB and exposed pad. The PCB is on a temperature-controlled stage. I apply a pulse voltage with a 10 ns rise/fall time to the heater and measure the rise and fall time constants. Please let me know if you have any other questions and I look forward to your opinion as this is crucial for my analysis.