- This topic has 8 replies, 6 voices, and was last updated 8 years, 3 months ago by
gherbi mohamed.
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March 12, 2016 at 9:47 am #32565
gherbi mohamed
Participanthi everyone,
i need to understand the index of modulation in optical domain for a simple modulation OOK (for example NRZ format). and how simulate two examples of modulation with different index of modulation?
best regards -
March 12, 2016 at 1:42 pm #32578
ZULKARNAIN
Participanthi gherbi mohamed….
You can refer to one of the previous post in which Modulation Index was discussed of which i am attaching the link.Hope you will find some help
with regards -
March 13, 2016 at 12:22 am #32583
Tanveer
Participanthi gherbi mohamed…
Brief info was already provided by Ravil about it and thud I am quoting the same as…If you are working on your project with OptiSystem, then the modulation index you are looking for is the essential characteristic of the laser source that you are using at the transmitter. In any laser based system, the optical modulation index (OMI) is a measure of how much the modulation signal affects the light output, and is measured in %. It serves for verification of optimal operation point of this laser. Typical OMI values depend on the type of laser being used….with regards
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March 13, 2016 at 12:29 am #32587
Tanveer
Participanthello gherbi mohamed…..
for more information on index of modulation kindly refer below sources,,,,http://www.m2optics.com/blog/bid/51795/Optical-Modulation-Index-Definition-Importance
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March 13, 2016 at 12:45 am #32591
Ranjeet Kumar
ParticipantHi Gherabi,
Please refer to component library PDF file of Optisystem.
For AM , PM and FM the default value of modulation index is taken as 1. But normalyy modulation index is taken between 0.5 and 1.
Here i am uploading pdf file. -
March 13, 2016 at 3:29 am #32601
Naazira Badar
ParticipantHi all..
Well I suggest that once you use any component, you should check its documentation. By double-clicking on the component and selecting help. By doing that, you can check the default values of the parameters taken into consideration by Optisystem. Then you can edit those as per the design requirements.
Regards.
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March 13, 2016 at 4:00 am #32609
burhan num mina llah
ParticipantHi All
Rightly conveyed by Naazira as this is the basic thing that everyone should when there is no information about that component or its parameters. Thanks Naazira
Regards
Burhan
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March 13, 2016 at 5:43 am #32627
Naazira Badar
ParticipantHi Burhan..
Yes, Indeed it is the basic thing before moving further with the design.
You’re most welcome.
Regards.
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March 13, 2016 at 11:15 am #32643
gherbi mohamed
Participantthanks for all.
ranjeet kumar, where is the pdf file?
best regards
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