Home Forums SYSTEM Biasing of Dual Drive Mach-Zehnder Modulator

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      Rifat Nazneen
      Participant

      Hello Everyone,

      I am facing a trouble on controlling the bias voltages of Mach Zehnder Modulator. I am trying to flat optical frequency comb. Therefore, I need to flat the spectrum lines in same magnitude. But whenever i changed the value of bias voltages, the lines were fluctuated. So i didn’t get the desired flat response.
      I used splitting ratio= 1.5, Bias voltage 1 = -3.6v and Bias Voltage 2 = -2.7v and modulation voltage = 2.24v . Is there anything that i have mistaken in the system or I have put any wrong bias value in modulator? Also i attached the response of the system by using this modulator.

      Please help me. Thanks in advance

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