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a) Given a transform limited Gaussian pulse with pulse width of T0 =1.0ps, Calculate the output pulse width after propagating through 10Km long fiber with B2 = -17ps2/km. The operating wavelength is  Lambda =1550nm.

b) In order to compensate for the dispersion that occurred in case (a), how long a fiber does one need if the dispersion of the dispersion compensating fiber is D= -200ps/nm-km.

c) In figure 5.4 of Fiber- optic communication systems fourth edition by Agrawal, what is the cause for the increased slope at the end of each plot and why are some slopes faster than others

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