OTDM

[deepak jha]

Hi all,

For analyzing bit sequence along the transmission link in my system design I make use of optical time domain visvalizer (OTDM) along the channel as one after MZ modulator,one after 100 km single mode fiber,one after Dispersion compensation module (DCM) however the
sequence shown after (DCM) has some missing initial bits..

Thanks and Regards

[deepak jha]

Hi all

Can this be a delay problem ?

Thanks and regards

[FAYIQA NAQSHBANDI]

HI DEEPAk..

Refer to following links.. Thse will definitely help you in a good way.

optical time domain visvalizer

Optical Time Domain Multiplexing (OTDM) Design

Regards
FAYIQA

[nagesh kuknoor]

Hello Deepak,

If your time domain visualizer is missing some bit this means that it is not getting transmitted at first place. Your system has then enough dispersion due to which this happens.
What is the fiber length you are using?

Thanks

[nagesh kuknoor]

and yes if is due to delay then you may have to use multiple iteration to visualize. Any bit can’t go missing becuase of delay. Logically it will be delayed only.

Thanks

[shafeen al yasin]

Hello Deepak,

I partly agree with Nagesh. Can’t you use any other visualizer for visualizing your bit sequence?
I think we have binary bit sequence visualizer yet i am not sure. You check the visualizer library i have a slight idea about it. I hope it will help you.

Regards
Shafeen

[Domail Singh]

Hello Shafeen,
I agree with you. Your answer seems to be more apt. I hope this will help you.

Regards
Domail

[shafeen al yasin]

Hello Domail,
Thanks for the appreciation.

Regards
Shafeen

[Manoj Kumar]

Hello Deepak,

I agree with nagesh,if your time domain visualizer is missing some bit this means that it is not getting transmitted at first place.It has been said very rightly that your system has then enough dispersion due to which this happens…

Regards

[Domail Singh]

Hello Deepak,

I agree with Shafeen you can use binary bit sequence visualizer. I hope it will help you.
Regrads
Domail

[jyoti raina]

hi deepak sir..
it was already posted on optiwave about the problem..trying checking that thread it will help..i remember..

With regards
jyoti

[deepak jha]

Hi Jyoti,

Will surely try to look into it…

Thanks and regards

[deepak jha]

Hi all,

Thanks for your responses… Really appreciate your concern

Regards

[nagesh kuknoor]

Hello Deepak,
You are welcome

[Domail Singh]

Hi Deepak
You are welcome.

Regards
Domail

[FAYIQA NAQSHBANDI]

HI DEEPAK..

You are welcome anytime..

Regards

[Ankita Sharma]

Hi Deepak,

I also seem to agree with with Shafeen here as you can use binary bit sequence visualizer. I hope it will help you…

Regards

[Remo De Suza]

Hello Deepak.
I think this topic has also been discusses. For your convenience i am attaching the link. I hope it helps you.

Regads
Remo

[Remo De Suza]

Here is the link. Please refer to it.

visualizer

[Domail Singh]

Hello Remo
Thank you for the link. It must help Deepak for sure.

Regards
Domail

[Ankita Sharma]

Hi Remo,

Yes the link provides a detailed discussion on the topic…

Regards
Ankita

[Remo De Suza]

Hi Ankita.
You are welcome. Cheers.

Regards
Remo

[Rajguru M. Mohan]

Hi deepak,
I suggest you to please visit the following links to get your problem be solved .
You shouls refer to optisystem tutorial to understand the operation of OTDM and follow the instruction because there is
difference between the compression stages were some parameters such as Bit rate at the PRBS Generator and the Delay at the Time Delay compon, as when the data stream is externally modulates a periodic stream of narrow pulses.
Because the bit interval is T, the separation between successive pulses is also T.
So, first we have to reduce the interval between successive pulses to T2, a high- rate multiplexed signal. This is done by passing the initial sequence through a series of compression stages.
The links are https://optiwave.com/forums/topic/optical-time-domain-visvalizer/

Optical Time Domain Multiplexing (OTDM) Design

Regards, Rajguru

[Domail Singh]

Hi Rajguru
Thank you for sharing the info. It shall be very useful to Deepak. Hope it helps him.

Regards
Domail

[shafeen al yasin]

Hi Rajgguru,
Thank you for the links and other valid info. I appreciate your efforts.

Regards
Shafeen

[nagesh kuknoor]

Hi All,
I think Rajguru has provided with some vital information regarding OTDM. The link is also very helpful and should help Deepak.

Regards.

[Remo De Suza]

Hi Nagesh,
yes i agree. It must be helpful.

Regards
Remo

[Ankita Sharma]

Hi RAJGURU,

Thanks for the information…

Regards
ankita…

[deepak jha]

HIA All,

Thanks for the information provided…. Very valuable suggestions indeed..

Regards

[Manoj Kumar]

Hi Deepak,

A very useful information provided by Rajguru regarding OTDM….. Hope it helps you..

Regards…

[deepak jha]

Hi Manoj,

Yes it infact did help…

Regards

[Domail Singh]

Hello Deepak
I am glad that it helped and your confusion is clear now.

Regards
Domail

[deepak jha]

Hi Domail,

Thanks for your concern..

Regards

[Domail Singh]

You are welcome Deepak

Regards
Domail

[Manoj Kumar]

Hi Deepak,

Nice to know that you got the desired help…

Regards

[deepak jha]

Hi Manoj,

Thanks for the concern..

Regards

[shafeen al yasin]

Hi All,

I hope it has helped Deepak immensely.

Regards
Shafeen

[Rahul Tiwari]

Hi Deepak,

Hope you got the desired help on the forum…

Regards
Rahul Tiwari

[deepak jha]

Hi Rahul,

Thanks for the concern… Really appreciate your concern…

Regards

[FAYIQA NAQSHBANDI]

HI DEEPAk..

Hope this has helped you.

Regards

[deepak jha]

Hi Faiqa,

Yes indeed it has helped..

Regards

[deepak jha]

Hi all,

Thanks for you concern..

[Rajguru M. Mohan]

You are most welcome Doamil singh and Shafeen

rajguru

[Author]

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