Kazuya HAYATA

Department of Social Information, Sapporo Gakuin University, Ebetsu, 069 Japan

(Received April 26, 1996; Accepted June 3, 1996)

Unconventional critical relaxations in the dynamics of envelope solitons subjected to a dissipation are predicted in the framework of adiabatic approximation. The degree of gslownessh in the critical relaxation process is controllable either through the loss compensation with gain or through the modulation of the magnitude of nonlinear absorption.

Key words : optical soliton, critical phenomena, adiabatic theorem, anomalous diffusion