Abstract

The linear propagation of optical pulses in monomode optical fibres at zero-dispersion wavelength is studied theoretically. From the envelope transmission equation, the root mean square (RMS) pulse width is obtained, and the minimum evolution condition, minimum pulse width and its corresponding distance are given. The case of chirped pulse is discussed in particular detail. It is shown that an arbitrary initial pulse transmitting at a zero-dispersion point has a restoration characteristic, which is entirely a result of the interplay between second-order dispersion and source chirp.

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