- This topic has 28 replies, 7 voices, and was last updated 8 years, 3 months ago by
Manoj Kumar.
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October 30, 2015 at 6:11 am #27278
Aabid Baba
Participantcould anyone please brief me about how we use add module , drop module , add/drop module in optiwave…it would be convenient if someone posts an example how it is used.. simple circuit design would do..!
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October 30, 2015 at 10:29 pm #27293
alistu
ParticipantHi Aabid,
I believe it would be quite helpful if you take a look at the examples in the OptiSystem samples regarding the aforementioned. You can find these three samples at OptiSystem 13 Samples\Component sample files\WDM Multiplexers Library\Add and Drop. One is related to WDM add, one related to WDM drop and one WDM add/drop. Please see if they are useful and ask any further questions you might have.
Regards
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March 29, 2016 at 9:03 am #33817
Atul Sharma
ParticipantHi Alistu.
Can you help me. I have a question you know i am testing a signal addition in WDM add component.. I have a confusion regarding the functionality of the add component. If i am transmitting a signal from the source end ( CW Laser) which is modulated ( using particular modulation scheme) and then supply this modulated signal to the add component ( whose reference wavelength is 1553nm or 193.1 THz) , Now my question is if the signal that is added by the add component is self modulated or i can change the different parameters of that signal.
I would like to hear from you.
Regards
Atul Sharma -
April 1, 2016 at 11:27 pm #34435
Aabid Baba
ParticipantHello Atul Sharma,
I think your this query has been already answered as suggested by your comments in previous posts where this query was raised. Still for your convenience i would like to say that yes you can do so and it also depends on the application part of your design what results you want. Generally we can use such scenario where we could use two modulation schemes for two wavelengths in the same system. I am working with optical security and i have seen such techniques used in cryptography and stealth channel schemes. Anyway i hope your issue was solved.
Regards-
April 2, 2016 at 8:16 am #34486
Atul Sharma
ParticipantHello Aabid baba. Good afternoon and GREETINGS.
Yes you are right we could do it and it is because of the forum i got lot of help and some guidance too. Anyway thank you very much for showing your interest. I appreciate your efforts.
And good to know that your work interest is optical security.Regards
Atul Sharma-
April 3, 2016 at 8:59 am #34837
Aabid Baba
Participantyou are welcome. Anytime
Regards
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April 2, 2016 at 12:15 am #34438
aasif bashir dar
Participanthi aabid baba,
add module,……………..Adds a WDM channel and a WDM signal
technical back ground
The input signals are filtered by an optical filter and are combined in one signal. The first signal is filtered by an inverse filter. The optical filters can be a Rectangle, Gaussian, or Bessel optical filter.
Defining crosstalk
The level of crosstalk for both MUX and DEMUX components, is defined by bandwidth, ripple, and depth of the filter. These 3 factors will determine how much power, from neighboring channels, will act as crosstalk terms when calculating the performance of a specific channel. The most important parameter is depth, as it will play the most significant role in determining the power levels of the neighboring channels.-
April 2, 2016 at 8:20 am #34487
Atul Sharma
ParticipantHello Aasif bashir dar. Good Afternoon and Greetings from my side.
Firstly thank you for sharing the basic things regarding the add drop components and how they operate in the system design. You have above mentioned one important factor or we rather can say an important parameter which is “depth of the filter”. can you explain what exactly is this depth and how do we set it and what impacts does it have. I had asked this before but got no response so as i saw this term mentioned so i thought it is good opportunity to ask you about it. Looking forward for your reply.
Regards
Atul Sharma -
April 3, 2016 at 9:02 am #34838
Aabid Baba
ParticipantHello Aasif,
It is an older post and people have commented on it lately that’s why it will be appearing in recent threads. The problem was solved long ago. Thank you anyways.
Regards
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April 2, 2016 at 12:18 am #34439
aasif bashir dar
Participantthe drop module is simlar to that of the add mux in technical back ground however..it Drops a WDM channel from a WDM signal.
add drop mux…Equivalent to a subsystem based on the WDM Add and WDM Drop components.
In the drop section, the input signal is divided in two signals. Each signal is filtered by an optical filter. An inverse filter filters the first signal.
In the add section, the input signals are filtered by an optical filter and are combined in one signal. An inverse filter filters the first signal.
The optical filters can be a Rectangle, Gaussian, or Bessel optical filter.with regards
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April 2, 2016 at 8:21 am #34488
Atul Sharma
ParticipantGreetings
Firstly thank you for sharing the basic things regarding the add drop components and how they operate in the system design. You have above mentioned one important factor or we rather can say an important parameter which is “depth of the filter”. can you explain what exactly is this depth and how do we set it and what impacts does it have. I had asked this before but got no response so as i saw this term mentioned so i thought it is good opportunity to ask you about it. Looking forward for your reply.
Regards
Atul Sharma
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April 2, 2016 at 4:12 pm #34689
SAHIL SINGH
ParticipantHi all,
I agree with the view points of asif that the drop module is simlar to that of the add mux in technical back ground however..it Drops a WDM channel from a WDM signal. Also as pointed out by Atul Sharma could anyone explain what depth of the filter means and what impact does it have on the design…
with regards
Sahil singh-
April 3, 2016 at 7:42 am #34793
Atul Sharma
ParticipantYes Sahil Singh i think Depth of filter is an important parameter. I just want someone to explain its impact. I hope someone responds.
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April 3, 2016 at 9:05 am #34843
Aabid Baba
ParticipantHello Atul,
As far as Depth of Filter is concerned please google it. You will get various links about the topic.
Regards
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April 3, 2016 at 5:14 am #34747
aasif bashir dar
Participanthi atul sharma,
i thing you should take the component help of the optisytem…where you get details of each component
with regards-
April 3, 2016 at 9:07 am #34844
Aabid Baba
ParticipantYes Aasif that can be the another option.
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April 3, 2016 at 8:56 am #34834
burhan num mina llah
ParticipantHi Aabid Baba
I believe you would be well aware of the theory and basics behind add module, drop module or add/drop multiplexer but since you want to know about the use of these modules in some example that would be existing in the examples. I have myself come across an example in which these modules were used . In examples of optisystem 14 go in the WDM system section and in there u would find an example of COADM and in that u will find that how add, drop modules are used. See for them if u find them well and good if not mention it i will upload the .osd file for you in that case.
Regards
Burhan
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April 3, 2016 at 8:59 am #34836
Aabid Baba
ParticipantHello Burhan Num,
It is an older post and people have commented on it lately that’s why it will be appearing in recent threads. The problem was solved long ago. Thank you anyways.
Regards
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April 3, 2016 at 9:02 am #34841
SAHIL SINGH
ParticipantHi Burhan,
You are correct in mentioning that in WDM system section of the optisystem 14 there is an example of COADM there it is clearly shown how add, drop modules are used… Thanks for the information..
Regards
Sahil Singh -
April 3, 2016 at 9:04 am #34842
Aabid Baba
ParticipantHi All,
It is an old post and the problem was solved long ago.
Thanks.-
April 3, 2016 at 11:41 am #34963
Atul Sharma
ParticipantHello Aabid. Greetings.
I think queries and confusions should be welcomed. I hope you don’t mind it.
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April 3, 2016 at 10:02 am #34885
burhan num mina llah
ParticipantHi Aabid baba
My apologies.. Thats great to see that the problem was solved. Best of luck..
Regards
Burhan
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April 3, 2016 at 11:43 am #34964
Atul Sharma
ParticipantHi Burhan. Greetings.
Discussions should be welcomed. you don’t need to apologize. Cheers 🙂
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April 3, 2016 at 11:53 am #34967
burhan num mina llah
ParticipantHi Atul Sharma
Actually as aabid has suggested already that the discussion was closed and query was answered long ago and hence I apologised for putting the same thing again.. I believe i was late in replying. Anyways that is considerate of you to reply on my apology..
Thanks
Regards
Burhan
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April 3, 2016 at 3:00 pm #35034
Atul Sharma
ParticipantIts Alright Burhan.
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April 3, 2016 at 3:00 pm #35035
SAHIL SINGH
ParticipantHi Burhan,
Infact the query was solved long ago.. anyways as suggested by other members on the forum,the discussions should be welcomed…
Regards
Sahil Singh -
April 3, 2016 at 11:48 pm #35135
burhan num mina llah
ParticipantHi All
Thanks all. Indeed this forum welcomes every informative response and discussion. Thats why we all are hear on this platform together to help out each other.
Regards
Burhan
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April 11, 2016 at 7:09 am #36189
Manoj Kumar
ParticipantHello Atul Sharma,
I think your this query has been already answered as suggested by your comments in previous posts where this query was raised. Still for your convenience i would like to say that yes you can do so and it also depends on the application part of your design what results you want. Generally we can use such scenario where we could use two modulation schemes for two wavelengths in the same system. I am working with optical security and i have seen such techniques used in cryptography and stealth channel schemes. Anyway i hope your issue was solved.
Regards -
April 11, 2016 at 7:09 am #36190
Manoj Kumar
ParticipantHi Aabid Baba
I believe you would be well aware of the theory and basics behind add module, drop module or add/drop multiplexer but since you want to know about the use of these modules in some example that would be existing in the examples. I have myself come across an example in which these modules were used . In examples of optisystem 14 go in the WDM system section and in there u would find an example of COADM and in that u will find that how add, drop modules are used. See for them if u find them well and good if not mention it i will upload the .osd file for you in that case.
Regards
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