Rare-Earth Doped Waveguide Element


#1

Hi,

We are looking to build a model for a rare-earth doped waveguide (or fiber) in interconnect in order to simulate our optically pumped amplifiers and lasers.

Ideally, we would like to be able to see

  1. the effects of changing pump power and wavelength
  2. the effects of different dopant concentrations and various dopants (so need to be able to implement energy levels)
  3. the quenching effects due to clustering of ions
  4. time domain response of the device, using rate equations
  5. a lasing spectrum when the gain medium is placed between two mirrors

I can’t seem to be able to find a way to model an optically pumped device in INTERCONNECT yet. I know that there is a “Travelling Wave Laser Model” already, which is for semiconductor lasers. Is there a way to make use of this for optically pumped solid state lasers? Does anybody have any ideas for building a scripted element?


#2

Hi @esm

Thank you for your post. We currently don’t have any rare-earth doped waveguide element in our library. One option is to build a model using our scripted element – it is quite flexible and you can also co-simulate with MATLAB. We can help you build the model. The best way to start is to define a reference paper with a model that is adequate for your application. I have a reference paper list below which introduces a model that includes transient effects, and covers most of the other affects that you are interested in.

‘Mathlouthi, W.; Lemieux, P.; Salsi, Massimiliano; Vannucci, A.; Bononi, A.; Rusch, L.A., “Fast and Efficient Dynamic WDM Semiconductor Optical Amplifier Model,” in Lightwave Technology, Journal of , vol.24, no.11, pp.4353-4365, Nov. 2006

Please check out this reference and let me know whether it is good enough to be used as a start point.

I hope this could help. Please let me know if you have other suggestions for the model.

Cheers,
Guanhui


#3

Hi @esm,

It’s being a bit late, but we now have an EDFA model in INTERCONNECT! Here are some relevant documentation pages:
Erbium Doped Fiber: https://kb.lumerical.com/en/index.html?ref_primitive_elements_erbium_doped_fiber.html
EDFA application example: https://kb.lumerical.com/en/index.html?pic_circuits_erbium_doped_fiber_amplifier.html

Please have a look at them and let me know whether it meets your requirements. You can get this release in the following page (select “Beat Release” from the “Select a version” drop down menu):
https://www.lumerical.com/downloads/customer.html


#4

Thanks for letting me know! This is definitely promising. Adding various quenching and clustering effects is very valuable, and I see that many of those parameters are included in the models. We will definitely test them out and let you know of any suggestions.