Random polarization mode coupling makes modeling the effects of polarization dispersion in long fibers difficult. In a recent paper,1 an approach to this problem was presented in which the first-order effects of polarization dispersion for spectrally narrow sources were considered to arise through a difference in the time of flight for waves launched in two orthogonal principal states. We present experimental results in support of this model and also extend the model to show that the second-order effect of polarization dispersion on pulse propagation is an effective chromatic dispersion having opposite signs for the two principal states. This latter effect is demonstrated in dispersion-shifted fiber by the compression of frequency chirped pulses in one principal state and commensurate broadening in the orthogonal principal state.

© 1988 Optical Society of America

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