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MRR Optical bit comparator and logic gates

(joined May 2020)
Participant

Hi
I am trying to design an optical magnitude comparator using micro ring resonators. I have used this paper as reference but I haven’t been getting the accurate results. Also been trying to design logic gates using one micro ring resonator. I have trouble getting the accurate outputs. Please let me know what I am doing wrong in the design.
Also how do you apply control pump signals in Opti FDTD? Is it possible?

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Responses (4):

    • #68042
      Anz
      Participant

      Hi
      I am trying to design an optical magnitude comparator using micro ring resonators. I have used this paper as reference but I haven’t been getting the accurate results. Also been trying to design logic gates using one micro ring resonator. I have trouble getting the accurate outputs. Please let me know what I am doing wrong in the design.
      Also how do you apply control pump signals in Opti FDTD? Is it possible?

      Attachments:
    • #68055
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      Scott Newman
      Moderator

      Anz,

      You are going to need to be a bit more specific in regards to not accurate results. I do have some clarification questions to help us in assiting you.

      1. What version of the product are you using?
      2. What paper is your reference? You do not say.
      3. OptiFDTD is a general purpose simulator for a source you simply setup the input plane and ensure it has the properties of your source. What do you mean by control pump signals, are you using nonlinear materials?

      Scott

    • #68065
      Anz
      Participant

      Hi Scott, thank you for your reply.

      Currently I am using the free OptiFDTD 32 bit software. I shall attach the reference papers and design here.
      I am trying to design a comparator using just ring resonators with two inputs with different wavelengths and amplitude corresponding to boolean logic as input properties. Does this method work with the design I have created?

      Anz

    • #68130
      Profile Photo
      Scott Newman
      Moderator

      Anz,

      The papers you cite use a pump signal to perform optical switching through 2 photon absorption to change the refractive index and therefore resonance of the ring. This is not an effect that is included in our material models at this time.

      Scott

    • #68141
      Anz
      Participant

      Thanks Scott.

      I’d also like to know if it’s possible to compare two inputs with different input properties like wavelength and amplitude like a digital comparator using ring resonators?

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