Method and system for generating atomized route of optical transport network

The invention discloses a method and a system for generating an atomized route of an optical transport network. The method comprises the following steps: obtaining physical topological information of the OTN; selecting branch circuit board ports of adjacent network elements, establishing an OTUk physical connection between two ports according to the selected ports, and selecting CTPs and time slots at the two ends of the OTUk physical connection to generate a physical link atomized route; establishing an optical channel and the OTUk physical connection in a matching manner according to a bandwidth supported by the ports of the network elements, taking A and Z network elements of the optical channel and the OTUk physical connection as point objects and the optical channel and the OTUk physical connection as line objects, selecting starting and terminating network elements to generate a route between the starting and terminating network elements, and selecting CTPs and time slots matched with the bandwidth to generate an optical channel atomized route. The method and the system for generating the atomized route of the optical transport network have the advantages that a continuous network topological connection is realized across the manufacturers and across systems, and the route design efficiency is improved.