Hi all, I am using a CFBG with the following parameters:
Center wavelength = 1035nm
D = 0.372 ps/nm
3dB reflection bandwidth = 18nm
For SMFs, D is given in the units of ps/nm.km, GDD is simply: GDD = GVD x fibre length, where GVD is D*lamda^2/2*pi*c.
However, CFBG's D value is given in ps/nm, and the vendor does not mention the length of CFBG. I am wondering how I can convert CFBG's D value given in ps/nm into GDD in the units of ps^2 to calculate the net laser cavity dispersion.
Thanks in Advance!
GDD hesaplaması sırasında fiber optik kablonun boşluktaki hızı (gücü), diğer değişkenler dikkate alınarak piksel olarak hesaplanır.
Hi Vincent Lecoeuche , Thank you for your feedback and clarification.
So the GDD of CFBG, D(ps^2)= - D(ps/nm) * lambda^2/(2pi.c) is the same equation as for the second-order dispersion of optical fibre (Beta_2). Except that in the calculation of Beta_2, D should be in units of ps/(nm. km).
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