- This topic has 18 replies, 3 voices, and was last updated 10 years, 6 months ago by
Heitor Galvao.
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October 23, 2014 at 9:34 am #14471
Heitor Galvao
ParticipantGood morning, , references in English below, to understand the functioning of the transmitter, now need to replace in a WDM network using coherent detection it would be that the 13 have already optisystem file, now I have no idea how to make this Substitution, maintaining the characteristics of the two networks, and it compares them and show that in fact the transmitter is valid
I) a network with my transmitter using coherent detection
II) two network without my transmitter, are optisystem file 13
The values of BER and OSNR must give values close to my transmitter is valid
The two networks should work at 10 GB/s -
October 23, 2014 at 9:39 am #14475
Heitor Galvao
ParticipantTransmitter annex and the palette of OFDM-WDM of optisystem
someone suggests something?-
October 23, 2014 at 2:47 pm #14492
Damian Marek
ParticipantWhy not use rectangular filters to filter out each frequency and then using that as the input for the OFDM channels. Basically replacing the CW Laser’s in our example file with a power splitter->rectangular splitter combo.
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October 23, 2014 at 2:49 pm #14493
Damian Marek
ParticipantHowever, there are a lot of considerations like number of carriers, carrier spacing, central frequency and bit rate that you will have to figure out to get the system working properly!
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October 24, 2014 at 2:40 pm #14531
Heitor Galvao
ParticipantExcellent Damian before using coherent detection I did with a palette optisystem tutorial and in fact my transmitter is valid and works as you can see in the annex, now that I don’t understand I did two scenarios and these two scenarios you will see, in both scenarios the channel the channel BER 1, so have zero values What do you suggest to improve these values?
First scenario
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October 24, 2014 at 2:43 pm #14536
Heitor Galvao
ParticipantUltimate annex to first scenario
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October 24, 2014 at 2:51 pm #14538
Heitor Galvao
ParticipantAnnex the project
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October 24, 2014 at 2:54 pm #14539
Heitor Galvao
ParticipantI can’t attach the project, I sent you a private message
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October 23, 2014 at 11:22 pm #14508
Ravil
ParticipantI agree about the filters. They will help you to reduce the noise in your system.
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October 24, 2014 at 6:17 pm #14541
Heitor Galvao
ParticipantIt was great to see
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October 24, 2014 at 6:22 pm #14545
Heitor Galvao
ParticipantExcellent Ravil before using coherent detection I did with a palette optisystem tutorial and in fact my transmitter is valid
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October 24, 2014 at 6:20 pm #14543
Heitor Galvao
ParticipantExcept for the first channel that I don’t know how do to improve checking
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October 25, 2014 at 1:34 am #14555
Ravil
ParticipantChannel one looks unusual, I agree. Is it close to cut-off frq of your filter?
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October 25, 2014 at 2:59 pm #14559
Heitor Galvao
Participant193.1THz
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October 25, 2014 at 1:36 am #14556
Ravil
ParticipantI meant EDFA band… Are you using them in your trans. path?
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October 25, 2014 at 3:01 pm #14561
Heitor Galvao
ParticipantI didn’t understand your question Ravil
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October 25, 2014 at 10:30 pm #14563
Ravil
Participantok, I was asking you about amplifiers that you are using in your transmission path. And wanted to make sure there is no cut-off in your amp. band…
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October 26, 2014 at 4:58 pm #14567
Heitor Galvao
ParticipantTo BER, the non-negative OSNR or too low to change the frequency of the central laser I have to modify also the frequency of the optical filter to allow the carriers generated generating remain flat after testing yesterday enough by dawn got flat carrier, plus the OSNR first was at 1, (something) to BER continued, being zero, do you have any suggestions on how to improve it?
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October 26, 2014 at 5:10 pm #14569
Heitor Galvao
ParticipantFollow Annex
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