high runtime

This topic has 7 replies, 7 voices, and was last updated 8 years ago by gaganpreet Kaur.

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- July 11, 2016 at 6:56 am #40933
  
  Hossein Roshan
  Participant
  
  Hello
  I’m simulating a phase conjugation module. in nonlinear part, I use a single mode fiber and reduce effective area to 10.5um^2 to use it as a HNLF fiber. in this nonlinear part coupled signal and pump and FWM will happend. The Optisystem when run my link, working for long times in HNLF fiber (after 1hour nothing happen). I want to know:
  1. Does Optisystem work true for my simulation? (FWM, phase conjugation)
  2. how long would the simulation take ??
  
  (my optisystem version: 7 )
- July 23, 2016 at 7:19 am #41031
  
  Aabid Baba
  Participant
  
  Hello,
  As far as the simulation time is concerned it depends on many factors like the launching power used for transmission, also the number of iterations.
  For less runtime I suggest you to use low launching power. I hope this helps.
  Regards
- July 30, 2016 at 10:35 pm #41075
  
  Hamza Ali Abbas Khan
  Participant
  
  I agree with Mr.Aabid Baba.
  It is very much related to the factors aforementioned by Aabid Baba.Hope it in a way helps you.
  Thanks
  Regards
- October 27, 2016 at 3:19 pm #41512
  
  adnan sabbar
  Participant
  
  dear friend
  simulation time depend first on the performance of your computer, for example RAM size, microprocessor speed.
  and for the FWM model, it depends on many parameter such as, lunched power, fiber length, nonlinear parameter (A and n2).
  I hope that was useful
- November 1, 2016 at 6:16 am #41517
  
  burhan num mina llah
  Participant
  
  Hello Hossein
  
  As far as your query is concerned i think all the forum members have put forth valuable suggestions. I too think that the simulation time depends on the performance of your computer, for example RAM size, microprocessor speed as mentioned by Mr Adnan.
  Also i think Aabid has given some important points. I hope this would help you.
  
  Best wishes
  
  Burhan
- November 4, 2016 at 12:24 am #41583
  
  Dr. Dhiman Kakati
  Participant
  
  Hi Hossein Roshan,
  The simulation time depends on various factors such as
  1. Sequence length (used in the layout parameters)
  2. sample rate i.e samples/sec (in layout): higher the sample rate the run time will be high
  3. optical source or Laser power (Higher the power more the time) as said by Abid baba
  4. Number of iteration or loop
  5. Processor frequency of your system
  6. Also the transmission distance if you are using fiber.
  7. Also type of component used eg: white light source take more time than the lasers.
  
  With regards,
  Dhiman Kakati
- November 7, 2016 at 2:52 pm #41601
  
  gaganpreet Kaur
  Participant
  
  Yes agreed with Dhiman signal proagation in hNLF takes unusually long times i have been working on it and worst is when results are not as expected and we need to make further changes.
  My advise : decrease launching power, decrease sequence length and length of HNLF . With such small dimensions kindly make HNLF of few tens of nts pssbly 50-200 m
- November 7, 2016 at 2:53 pm #41602
  
  gaganpreet Kaur
  Participant
  
  Moreover FWM crosstalk will be very high in this HNLF so even output will not give u clear eye diagram. if u r using more than one channels increase the channel spacing to more than 100GHz. I hope it works.
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