摘要
We show that the nonlinear equation governing wave propagation in a loss fibre system considered byNakkeeran in J. Phys. A34 (2001) 5111 can be brought into the standard nonlinear Schrodinger equation by a simpletransformation.
基金
The project supported in part by National Natural Science Foundation of China under Grant Nos. 90103026, 60078023 and 10125419 as well as by the 100-Talents Project of the Chinese Academy of Sciences
