Funding for this research was provided by:
Construction Program of Undergraduate Core Courses from China University of Petroleum-Beijing
National Natural Science Foundation of China (11705284, 61505054)
Quality and Innovation Project of Graduate Education from China University of Petroleum-Beijing
China Scholarship Council (201806445009)
Journal title: European Journal of Physics
Article type: paper
Article title: Approximate analytical description for the nonlinear ${ \mathcal P }{ \mathcal T }$-symmetric coupled-mode equations
Copyright information: © 2020 European Physical Society
Publication dates
Date received: 2019-09-08
Date accepted: 2019-11-20
Online publication date: 2020-02-10