- This topic has 8 replies, 4 voices, and was last updated 9 years, 4 months ago by Ashu verma.
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July 8, 2015 at 7:44 pm #22274Taha AliParticipant
Both dispersion compensation techniques (FBG and DCF) has three schemes (pre, post, and mixed). In terms of Q-factor and Bit error rate, which one of them is better. A lot of papers discussed this issue and the had different results even most of them uses OptiSystem.
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July 9, 2015 at 4:29 am #22285Alessandro FestaParticipant
Hi Taha,
I know there are different papers and do not always agree on which solution is the best. I think the reason is that it depends on the particular configuration…for example for high launch power nonlinearities have a role together with dispersion, and this changes the picture.
If I remember well, Optisystem examples show that mixed is the best solution, correct? -
July 10, 2015 at 10:35 am #22325Ashu vermaParticipant
Hello Taha Ali
According to your question about performance of DCF and FBG,i am agree with Alessandro that it vary for some systems and configuration.There are lot of research articles regarding this particular topic however different results shown about best performance of DCF and FBG.According to my knowledge,DCF has around 93% efficient to reduce pulse width of dispersed signal while FBG have 73% efficiency. Also DCF is costlier than FBG. I have given link of ↓ optiwave dispersion compensation example and a link of paper describing pulse width reduction efficiency of FBG and DCFhttp://www.ncbi.nlm.nih.gov/pubmed/25322426
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July 10, 2015 at 10:38 am #22326Ashu vermaParticipant
I just want to add that according to optisystem dispersion compensation example symmetric compensation came out to be the best but at the higher powers post dispersion compensation performs better.
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July 11, 2015 at 5:03 am #22336gaganpreet KaurParticipant
DCF compensation is used periodically and folows the rule L1D1+L2D2=0 where L1 is length of the transmitting fiber having dispersion D1 and L2 is length of compensating DCF and D2 its dispersion.. obviouslt Q factor depends on system configuration and optimization used but DCF is used for long distance transmission systems.
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July 12, 2015 at 10:26 am #22354Ashu vermaParticipant
Thank you Gaganpreet kaur explaining how to calculate dcf length according to SMF and adding your points
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July 12, 2015 at 5:21 pm #22357gaganpreet KaurParticipant
thanks i find this forum a good platform for knowledge sharing.
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July 13, 2015 at 10:50 am #22386Taha AliParticipant
Thank you all. it’s very helpful information.
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July 13, 2015 at 11:10 am #22388Ashu vermaParticipant
Welcome Taha Ali
Its our pleasure to help and share knowledge with other members,Hope you got your answer from above discussion.Do not forget to share ideas and knowledge with all the other forum participants.Best of luck for your future research work.
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