Y-branch waveguide structures are fundamental elements of integrated optics devices such as power or optical splitters, power or optical combiners, integrated-optic gyroscopes, Mach-Zehnder modulators/interferometers etc. Beam propagation method can be used to simulate the behavior of the optical beam in say a nonlinear crystal. I would like to design the geometry of Y-junction using comsol multiphysics 4.3 (does not contain any in model library) or define the waveguide and S-shape using matlab. I will appreciate any advise on either of the approaches, links or codes.
Dear Dismas,
Please have a look at this model (https://www.comsol.co.in/model/shape-optimization-of-a-tuning-fork-8499). You will find how to create a Y junction by following the instructions.
Hope it helps.
Regards,
David
If you want to design Y-junction structures using photonic crystals I recommend you to read this tutorial. hope it helps.
http://cn.comsol.com/model/photonic-crystal-14703
I have tried using the tuning fork geometry but it can't give me the S-shape that I want in 2D. COMSOL Multiphysics 5.2 (and above) has a solved Mach-zehnder interferometer in its model library for which part of its geometry is S-shape. I am using version 4.3b which doesn't have that model. Anyone using COMSOL 5.2 can kindly sent me the parameters available at mach_zehnder_modulator_parameter.txt
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