May 17, 2015 at 2:50 am #20877Mohamed ElgaudParticipant
Hello, why FBG keeps reflecting a part of the transmitted spectrum (which is supposed to be transmitted and not to appear in the reflected spectrum) when use it with CW laser? For example, in the case of CW wavelength is 1550 nm, and the FBG reference wavelength is 1551nm, the reflected spectrum from the FBG displayed in the OSA contains both of 1550 and 1551 in the same spectrum, what ever the FBG bandwidth is.
. Thank you
May 18, 2015 at 10:05 am #20889
A fiber Bragg grating is perturbation of refrective index in fiber core (may it periodic or non periodic)which reflect specific wavelength and transmit other.When ligth reflects from FBG it contains other frequencies also as you said,then try ideal FBG to simulate this. Bandwidth of FBG we take 3 times the data rate .
Data rate= 10Gbps then FBG BW is 30Ghz
Hope it helps you
And can you share your objective,if it would be possible.So that we can help you more
May 18, 2015 at 7:13 pm #20909RavilParticipant
I agree with Sam Sung that ideal FBG might work better for you. At the same time, can you, please, specify/clarify a few things about your question: what kind of FBG you have used in your scheme and what are the powers of the other reflected wavelengths? Please, attach your scheme as well if you can. It will help us to understand your project better…+1
June 29, 2015 at 12:48 pm #21995Mohamed ElgaudParticipant
Thank you very much guys, sorry for late replay, will attach the scheme soon and get your appreciated help.
June 30, 2015 at 1:55 am #22007Taiwo Ambali AbiolaParticipant
But which of the two FBGs is the one available in the market. Is it Ideal or Uniform FBG?. Or they are both available in the market?.
June 30, 2015 at 2:11 am #22008Alessandro FestaParticipant
The ideal is the perfect component to use for dispersion compensation. Being ideal, it is not really a commercial component, but the Dispersion Compensation Modules you find now on the market are very similar to that.+1
June 30, 2015 at 4:38 am #22010
Welcome Mohamed,best of luck for the research.Any doubt share with forum members,you will surely get help.
I am agree with Alessandro about the ideal FBG. FBG’s now available in market are close to ideal one,but cannot say these are ideal.As small losses are in every component.
June 30, 2015 at 4:51 am #22016Taiwo Ambali AbiolaParticipant
Ok, thanks alot both Alessandro and Sam sung
June 30, 2015 at 4:56 am #22018Alessandro FestaParticipant
You are welcome Taiwo!
June 30, 2015 at 11:52 pm #22040
Welcome Taiwo,Best of luck for your future research.
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