- This topic has 20 replies, 6 voices, and was last updated 9 years, 1 month ago by
alistu.
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AuthorPosts
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August 1, 2014 at 6:32 pm #13047
mabrok
ParticipantHi
Is the feature of optical wireless(ex.Infrared) available in Optisystem?
Regards
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August 12, 2014 at 11:19 am #13131
Damian Marek
ParticipantYes, we have two components which model wireless links. The FSO and OWC components.
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April 12, 2015 at 3:58 pm #19600
Deepanshu sharma
ParticipantCan you please tell me the modelling behind optisystem FSO component ??.. how it will work when we use 6 WDM transmitted input and then pass it through FSO channel ??
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October 28, 2015 at 9:21 pm #27234
alistu
ParticipantHi Deepanshu,
The information regarding modelling of the OptiSystem FSO component has been mentioned in the technical background part in the help section in the component properties. There you can see how the FSO parameters contribute, and the references based on which the modelling has been done are also mentioned.
Regards
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October 28, 2015 at 5:21 pm #27230
mabrok
ParticipantHi, Regarding OWC, do u have path loss estimations?
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October 28, 2015 at 9:28 pm #27235
alistu
ParticipantHi Mabrok,
In both FSO channel component and OWC component the channel loss can be taken into consideration by setting a value for it in the component properties. There you can see “attenuation” parameter expressed in dB/km. If you don’t change the value, the components would go with their default values.
Regards
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October 29, 2015 at 10:41 am #27266
prakash jat
Participantcan we have focusing lens component through matlab component in owc channel,or direct? component in optisystem
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October 29, 2015 at 10:18 pm #27269
alistu
ParticipantHi Prakash,
You can create any component using Matlab component and the related Matlab code. But there are two lens components available in OptiSystem as far as I know: Vortex lens component and thin lens component. These two components are placed in the passive folder in the multimode library of OptiSystem.
Regards
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October 30, 2015 at 9:47 am #27282
prakash jat
Participanthi alistu
can we use vortex and thin lens in owc or is it designed for multimode fiber ?
Regards-
October 30, 2015 at 10:44 pm #27294
alistu
ParticipantThe component is designed for multimode systems and I did not find any explanations in the help section suggesting it can only be used in multimode fibers. So I think you can use it there. However, I hope someone with more experience on this would also help you here by confirming what I mentioned.
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March 2, 2016 at 11:15 am #30965
Naazira Badar
ParticipantHi Prakash..
Have you used the lens in your FSO system? Did it bring any change in the results where in your had not used the lens?Regards.
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March 2, 2016 at 11:21 am #30966
prakash jat
Participanthi naaazira
welcome to owc link design
i used lens in multimode section ( mm tx —- channel—- lens— mm rx)but there is no change in ber ( whatever value i select),
if you try for matlab then it may be one solutionregards
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March 3, 2016 at 12:36 am #31088
Naazira Badar
ParticipantHi Prakash.. Thanks a lot for replying.
I am working on FSO channel based system and I haven’t used any lens explicitly. Hence I wanted to know if the performance improves by making use of those.
Well actually the FSO channel itself models tx and rx telescopes wherein lens would be incorporated itself. That’s why I think addition of a lens system explicitly makes no difference.
Regards.
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March 3, 2016 at 12:38 am #31090
Naazira Badar
ParticipantAnd Prakash, Could you please elaborate on what exactly is a multimode section in OWC?
regards.
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March 3, 2016 at 12:42 am #31093
prakash jat
Participanthi naazira………welocome
you are correct in case of single mode laser but when you use spatial laser then how can we reduce spot size( i mean FSO telescope does’t reduce spot size because it is not modeled as spatial feature) so ultimately FSO component dosn’t reducing spot size, so solution is that use matlab lens.
let me know if it does
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March 3, 2016 at 12:45 am #31096
prakash jat
Participanti am attaching demo file , please obeserve two thing
1. spot size
2. BERafter that tell me , what wrong with that software
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March 3, 2016 at 1:01 am #31105
prakash jat
Participantsorry for delay
optisystem doesn’t provide spatial feature in FSO component
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March 3, 2016 at 1:08 am #31109
prakash jat
Participantso you can reduce your spot size through thin lens
if you want to obeserve this spot size at Rx Telescope then see profile of Sushank choudhary , i think , he made matlab code for spatial feature visulizationlet me konw what do you get
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March 3, 2016 at 1:13 am #31112
prakash jat
ParticipantMy one more question from optisytem group that how to model spatial feature in matlab, is there any demo file?
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March 3, 2016 at 6:21 pm #31304
alistu
ParticipantHi Prakash,
Even though the discussion in the following forum page is rather general, but since it is an answer to a question regarding creating spatioal modes using Matlab component, I suggest you just have a look to see if it can be of any help:
Regards
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March 3, 2016 at 11:27 am #31260
Naazira Badar
ParticipantHi Prakash..
Could you please tell me which LASER from the Optical Sources library have you used in this system?
Also,Could you please tell me which version of Optiwave have you used for the file you have attached above?I have optisystem 14.0. And I seem to have some issues with opening files of the lower version.
Regards.
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