Home Forums FIBER Gain Flattening Fiber Amplifier

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    • #28289
      Safwan Jack
      Participant

      Hi all. I am a beginner and I have only use Optisys 7 for 1 month.

      1) Im trying to design a gain-flattening filter for EDFA. Firstly, i need to design an EDFA system. I have been trying to design the system using this setup (Link below) but i didnt really manage to get any result. My SV told me that I supposed to put a pump before EDF but i cant really put it there.

      Lesson 7: Optical Amplifiers — Designing Optical Fiber Amplifiers and Fiber Lasers

      2) Is there any way of using anything to get a gain flattened filter beside the gain flattening filter block? I have read some theory about doing ‘circulation’ but i dont really understand how to use the blocks inside optisys.

      3) Here is the system i try to create. But I didnt really get the result. I’ve try putting optical delay but it didnt work either.

      Attachments:
    • #28351
      Alessandro Festa
      Participant

      Hi Safwan, have you tried to use components that are not bidirectional?

      Regards,

      Alessandro

      • #34447
        Safwan Jack
        Participant

        Hi Alessandro.

        Thanks for your kind reply. Yes I have tried. In fact I have tried several method to design a gain flattening filter but I seems to have failed. Now, Iam trying to do a gain clamping EDFA by looping as suggested by my SV. Im doing the simulation base on the Journal “A Steady-Gain C-band EDFA for Multi-Wavelength Fiber Optical Transport Networks”. I dont really understand how to use the coupler 50/50. As the splitter, im being told that using 1×2 power splitter is okay.

        Attachments:
    • #34449
      aasif bashir dar
      Participant

      hi safwan jack,

      the screen shot you have attached and your description reveal that your you are confusion about the gain flatting filter…

      the gain flatting filter you are using is just a black box…and has only simulatio importance…for practical application you need the devices that are abble to equalizer the gain at all wavelengths.

      with regards

      +1
    • #34457
      ZULKARNAIN
      Participant

      hi safwan jack..
      i agree with other two masters who respond to this query.i think you should the tutorial about gain-flattening filter with an EDFA to get some idea about it.For your reference i am attaching the link for the tutorial.Hope your problem gets resolved soon.

      Gain Flattening Filter Optimization


      with regards

    • #34461
      aasif bashir dar
      Participant

      hi all,
      EDFAs have a wavelength-dependent gain; i.e., some wavelengths are amplified more than others. A gain flattening filter restores all wavelengths to approximately the same intensity.

      a practical example can be an linear chirped fiber grating(LcFBG) not operating in saturation mode…where every wavelength is replected as per our need.we can tune the chirp or length of FBG as per our need.
      with regards

    • #35148
      Ranjeet Kumar
      Participant

      Hi,
      We have the way of using something to get a gain flattened in Erbium-Doped Fiber Amplifier .
      We could use g Dual-Core Fiber for this, i would suggest you to visit the following links:
      http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=896325

      Gain Flattening Filter Optimization

      Gain Flattening Fiber Amplifier

    • #35169
      varinder singh
      Participant

      Hi Alessandro.

      Thanks for your kind reply.a practical example can be an linear chirped fiber grating(LcFBG) not operating in saturation mode…where every wavelength is replected as per our need.we can tune the chirp or length of FBG as per our need.
      with regards

    • #35171
      varinder singh
      Participant

      hi safwan jack..
      i agree with other two masters who respond to this query.i think you should the tutorial about gain-flattening filter with an EDFA to get some idea about it.https://optiwave.com/forums/topic/gain-flattening-fiber-amplifier/
      with regards

    • #35200
      varinder singh
      Participant

      hi safwan jack,

      the screen shot you have attached and your description reveal that your you are confusion about the gain flatting filter…Hi,
      We have the way of using something to get a gain flattened in Erbium-Doped Fiber Amplifier .https://optiwave.com/forums/topic/gain-flattening-fiber-amplifier/
      with regards

    • #36188
      Manoj Kumar
      Participant

      hi safwan jack..

      i agree with other two masters who respond to this query.i think you should the tutorial about gain-flattening filter with an EDFA to get some idea about it.For your reference i am attaching the link for the tutorial.Hope your problem gets resolved soon.

      Gain Flattening Filter Optimization


      with regards

      +2
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