Variation in the simulation results

hi remoo de suza..

i think this is the problem of all the beginner in optisytem….follow the following steps for getting same results every time…

for some components like pseudorandom sequence generator, fiber, amplifier, apd or pin , or optical receiver, etc…etc..,there the parameter namely generate random seed,,,for each of those components…

now you need to untick it for each of the component individually…you will get same answer every time..

hope you got answer for your question
with regards

Hello Remo,
As far as your problem is concerned i think you should try disabling the random seed option in the layout parameters of every active component you use in your circuit design. It is common problem if you keep the ‘generate seed’ option enabled. And initially this problem would occur. I suggest you keep the seed option disabled most of the times unless and until it is your requirement. I hope this would help you and you will find it useful.
Regards

Hi Remo de Suza..
welcome to opti forum.

Well, this is a very common problem that you re also facing and everybody has given you the right solution. it has always to do with disabling the random seed of the components. I hope you are getting consistent results now.

Regards
Naazira Badar.

Hello Remo

As suggested by the forum members all you need to do is uncheck the random seed option in the characteristics of some components in which this option is present.. This is actually meant for designs that need to have components take the random calue every time. So when we need the value taken by component to be constant all we need to do is uncheck it and by default it upgrades the value randomly.. I hope your problem is addressed and answered..

Regards

Burhan

Hello Remo DeSuza. Greetings from my side.

Firstly Welcome.
Secondly and more importantly which is your problem about variation in results may be because of generate seed parameter.
As suggested by other members you need to uncheck the option and your results will get stable to some extent definitely.
I hope this will be of great help.

With Regards
Atul Sharma

Hi Remo de Suza..

I welcome you to the optiwave forum… As mentioned by other members of the forum about your problem of variation in results,this is a very common problem faced by the people using optisystem… As suggested by other members you need to disable the random seed of the components.. I think you have got your query allready addressed..

Thanks and Regards
Sahil Singh

Hi Remo de Suza..

I welcome you to the optiwave forum…i think the variation in the result is due to some unwanted software,please download the latest version and then simulate it again i hope u will be able to find the solution…………
with regards

Hello Varinder singh..This is a reply to your comment “I welcome you to the optiwave forum…i think the variation in the result is due to some unwanted software,please download the latest version and then simulate it again i hope u will be able to find the solution”… I have already upgraded my software to the latest version.. but still i am facing the same problem. I am still facing the variations in results whenever i try to simulate…Please look onto the problem and give the effective solution that can workout.
Regards.

Hi Remo De Suza,

You are welcome anytime… I hope your query gets solved as all the members on the forum has suggested their valid point of views towards the problem you are facing…

Reegards
Sahil Singh

Hi Jojo Matthew,

I fail to understand which unwanted software are you talking about ? And in what design are you facing the problem of variation in results ? Please explain a bit…

Regards
Sahil Singh

Hi Remo,
I agree to the points of Umar syed that the problem should be solved if we untick the generate random seed for each of the component individually. I don’t know why you didn’t agree to his points.
I am unable to understand your this comment”The problem is with the variation of the results not the results.”
Please explain what do you like to express.
Seeking your response.

Hi Jojo mathew

why don’t you opt for the solution given by most of the members above.. and that is by clicking on all the components and in the characteristics section of various componenets you find an option called generate random seed.. all u need to do is uncheck that option and those components would stop generating random values.. that way you would get constant values from that component and hence the results won’t vary..

@remo.. you are welcome..

Regards

Burhan

You are welcome Remo de Suza.. I believe once you turn off the random seed, your problem shall surely be solved.
All the best.

Regards
Naazira Badar.

HI Remo,

I fail to understand what jojo mathews is talking about… May be your guess is right he might be referring to some other topic where he might have posted the same… Its pretty confusing statement from Jojo Matthews

With regards
Sahil Singh

You are most welcome Remo De Suza
As You have pointed out your problems of simulation results, although it was not so serious one.
I will try to help you as per my ability.

Hi Remo De Suza and Sahil Singh

i believe he has clearly mentioned that he is facing the same problem of variation of simulations results… since he has referred to comment of virender singh as in that virender had suggested of upgrading the optisystem version..and jojo has mentioned that he had tried that but not helped jojo… so i thought its the same random seed problem that he had to disable in order to get constant results…

Regards

Burhan

Hello Remo De Suza

You are most welcome.. This is what we are hear for to teach and to learn and above all help each other and learn from these fruitful discussions.. Thats nice your problem got solved.. Almost everyone would have faced this till we know about random seed issue..
Cheers!

Regards

Burhan

Hi All

Thank you all for such a healthy discussion.. I think whosoever would be new to optisystem would certainly find this post helpful for him or her.. As in this post a basic thing is clearified and very well addressed.. Thanks to all the participants of the discussion..

Regards

Burhan