Learning Forum

[suruchi.bala]

Hi,

I am trying to find the CML grating waveguide as shown in the attached photo. Do you mind sharing the link of the tutorial/video/ansys web link where I can read about this.

I have lumfoundary_KLayout_CML design kit, but this one is not the part of that design kit.

 

[suruchi.bala]

Hi,

I am interested in the following kind of grating, also wanted to check where can I find script like this, shown in the attached photo.

 

[Dimitris Polyzos]

Hello

You can find all the information needed for this element at this link: LCML-Waveguide-Bragg-grating-lcml-bragg-strip-1550.

You can find the script if you follow the red arrow in the next image:

I also share the script below:

neff = 2.44695;

ng = 4.20818;

? bragg_wavelength = 1570e-9 + (grating_period-324e-9)/324e-9*neff/ng*1570e-9;

? kappa= (1392.7887 * corrugation_width * 1e9 + 11271.6719) * cos(misalignment/grating_period*pi);

? grating_length = grating_period * number_of_periods;

setnamed("WBG_1", "bragg frequency", c/bragg_wavelength);

setnamed("WBG_1", "grating coupling coefficient", kappa);

setnamed("WBG_1", "length", grating_length);

setnamed("WBG_1", "loss 1", 300);

setnamed("WBG_1", "group index 1", ng);

setresult("BraggWavelength", bragg_wavelength);

setresult("Kappa", kappa);

 

I hope I helped.

Regards

Dimitris

[suruchi.bala]

Hi Dimitris,

I am not able to open the link, does this mean, it has something to do with the license?

Also in my cml files, there is no edit option, do you know how can I still have that file?

 

Regards

Suruchi

[Dimitris Polyzos]

Hello, 

Think that there might be an issue with the license. Could you please let me know what license do you have?

Unfortunately, we cannot share files through this forum. An alternative could be to open a ticket request and if not me, one of my colleagues will be able to share the file with you. Check the photo below how to do that

Regards

Dimitris

[suruchi.bala]

Hi Dimitris,

According to Ansys website, only ansys learning forum can help.

[Dimitris Polyzos]

Hello, 

unfortunately for Academic licenses the only support that is provided is through ALF, as you correctly mentioned. I think the access to the link does not have to do with the license, as it is visible only to agents and is not for public access. You can easily built it thought using the script i shared with you and this reference: X. Wang, et al., "Precise control of the coupling coefficient through destructive interference in silicon waveguide Bragg gratings", Opt. Lett. 39, 5519-5522 (2014).

I reckon that CML for this type of license cannot be edited. You could consider to change the license and have access to premium support.

I hope I helped.

Regards

Dimitris

[suruchi.bala]

Hi,

 

Are there any steps to create own CML based bragg grating waveguide or bragg grating waveguide with own script?

[Dimitris Polyzos]

Hello, 

You can use a pripmitive element Bragg grating that it is included in INTC librady and use a compound element to introduce analytical functions and parameters. The build will be based on the primitive Bragg grating element, and more parameters can be added in the compound element such as the Bragg wavelength and coupling coefficient. Information of creating a compound element can be found here: Compound-Element-COMPOUND-INTERCONNECT-Element.

The script commands I shared with you in one of my previous replies can be used in the script window of the compound element and connect the inputs/outputs as well.

Regards

Dimitris