We present exact stationary phase modulated solitary wave and kink solution
s for a higher-order nonlinear Schrodinger equation. These solutions differ
from the known solutions in the literature both in phase and amplitude. Th
e relevance of these new solutions in the context of propagation of light p
ulses in optical fibres is also discussed. In particular, we have shown tha
t higher order nonlinear dispersion terms in the nonlinear Schrodinger equa
tion can lead to shock wave solutions.