Coupled higher-order nonlinear Schroedinger equations: a new integrable   case via the singularity analysis
  A new system of coupled higher-order nonlinear Schroedinger equations is proposed which passes the Painleve test for integrability well. A Lax pair and a multi-field generalization are obtained for the new system. 
S. Yu. Sakovich and Takayuki Tsuchida