[Hell ObliviateParticipant]

hi Abouseif,

I did what you have told me to do, & yes it works!

Since ASE noise is the real property of a optical amplifier, & i want them to stay & eliminate them by any real option like filter, like Fabry Perot Optical Filter.

so my question is, what are the appropriate settings of a filter to reduce ASE noise?

i did try with Fabry Perot Optical Filter but i could not find any better setting of the properties. so hope forum will help me.

regards
the hell

Attachments:

1. Filter-design.zip

[Hell ObliviateParticipant]

Hi Abouseif & Dods,

the document you have suggested is quit helpful, i enjoyed reading it. Finally it is understand that, why combiner behave such.
in theory & simulation it is clear that when a input is very low other arm’s input faces 3dB attenuation.

But i have another query
the option “Force power conservation” you have told, is it possible to implement this option in real combiner?

thank you both again,

have fun 🙂

hell

[Hell ObliviateParticipant]

Hi Dods,
thanks for replay!
But i could not access your pdf. would you please kindly upload it again?

regards
hell

[Hell ObliviateParticipant]

Hi Abouseif,

it is always good to see you.
your are right! the phase shift is 90 degree.

but i have got couple of questions about this topic, & hopping answer from you again!

1. i uploaded another file, where combiner has 1mW input but its output is 500uW. why combiner attenuated the power when another input is low? it suppose to add them. However when i give both the input same power, it is not happening. why?

2. can you me help about “Force power conservation”, i could not found it in optisystem7.

3. inputs of ideal MUX is 1mW, but output is 4mW, why ideal mux amplify the signal?

thank you again
take care
hell

Attachments:

1. Combiner-MUX.zip

[Hell ObliviateParticipant]

Hi Abouseif,

yes you are absolutely right,

OHL is malfunctioning wile connecting as cascade. when i replace OHL at source with NRZ Pulse Generator it works fine.

So i think that optisystem team should notice this kind of issue & fixed them. 🙂

thanking you

hell

Attachments:

1. OHL-1.zip

[Hell ObliviateParticipant]

hi Abouseif,
thanks for your comment

so do you mean that default values used by optisystem are the standard value?

thanks again

Hell

[Hell ObliviateParticipant]

Hi Abuseuf
I appreciate your work,
would you please upload your work?
thanks again.

[Hell ObliviateParticipant]

why this is not uploading?

Attachments:

1. OHL.zip

[Hell ObliviateParticipant]

[Hell ObliviateParticipant]

thank you Abouseif
here is the file
OHL shows wired behave to it’s input near its threshold value at 1Tbps

i don’t know why? but until i did not find any reason. this is annoying.