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Simulating 2D optical waveguide

Posted 24.02.2010, 14:48 GMT-5 RF & Microwave Engineering Version 5.2 3 Replies

David964
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Hi,

I am simulating a 2D optical waveguide for both TE and TM modes.

For TE waves I get reasonable result by setting the cladding core interface as perfect electric conductor.
I use excitation port with analytic mode and exist port also as analytic mode.

However, for TM modes I do not get a reasonable result (please see attached file).
I've switched the core-cladding interface to be perfect magnetic conductor.

Any comments will be helpful. Thanks.

Attachments:

3 Replies Last Post 11.10.2016, 08:31 GMT-4
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Hello David964

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Sarbjit Singh
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Posted: 9 years ago 20.05.2016, 11:32 GMT-4
HELLO DAVID
in ur model u have not shown cladding.....only core is there.
what diameter off cladding u r taking...send me ur model.....i will guide you.
waiting for ur reply
HELLO DAVID in ur model u have not shown cladding.....only core is there. what diameter off cladding u r taking...send me ur model.....i will guide you. waiting for ur reply
Walter Frei COMSOL Employee

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Posted: 9 years ago 20.05.2016, 11:38 GMT-4
Hello,

Regarding optical waveguide modeling in the full-wave regime, please see the following example:
www.comsol.com/model/dielectric-slab-waveguide-14709

You may also be interested in the beam-envelopes formulation, as shown here:
www.comsol.com/model/mach-zehnder-modulator-15061
www.comsol.com/model/optical-ring-resonator-notch-filter-22221
Hello, Regarding optical waveguide modeling in the full-wave regime, please see the following example: https://www.comsol.com/model/dielectric-slab-waveguide-14709 You may also be interested in the beam-envelopes formulation, as shown here: https://www.comsol.com/model/mach-zehnder-modulator-15061 https://www.comsol.com/model/optical-ring-resonator-notch-filter-22221
Joaquin Faneca
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Posted: 9 years ago 11.10.2016, 08:31 GMT-4
Hello,

I am trying to simulate the same model as you have attached before the Notch Filter, but I am trying to determine the parameters of the radius and the distance for other materials, I am doing a parametric sweep in the radius and in the distance between the waveguide and the microring resonator, and the problem appears when I try to plot the transmission in a surface plot with this two parameters.

Could you help me, please?

Often appears the next message:

No solution found for outer solution number 1000.
Hello, I am trying to simulate the same model as you have attached before the Notch Filter, but I am trying to determine the parameters of the radius and the distance for other materials, I am doing a parametric sweep in the radius and in the distance between the waveguide and the microring resonator, and the problem appears when I try to plot the transmission in a surface plot with this two parameters. Could you help me, please? Often appears the next message: No solution found for outer solution number 1000.

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