Home Forums SYSTEM Coherent Optical

Viewing 2 reply threads
  • Author
    • #16493
      Ngoc EnBBer

      I have a problem, I don’t understand in 50 RZ DPSK we use 2 LiNb MZ Modulation while in NRZ DPSK we use only one LiNb MZ Modulation. So why and when we use two MZ modulation and one MZ modulation

      See attachment.
      Thank you very much!!!

    • #16595
      Damian Marek

      They are two different modulator formats, in the first the second MZ is used to carve the optical power, but really the information is encoded into the phase. In the second pulses are not carved because it is NRZ.

    • #16869

      Agree with Damian, first modulator is used to record data obtained from infromation source, then to change code of bit stream to RZ. NRZ doesn’t require this code change.

Viewing 2 reply threads
  • You must be logged in to reply to this topic.