Minimum cost routing based restoration in multi-granularities translucent WSON

In wavelength switched optical networks, the restoration probability of interrupted connections is affected by impairments accumulated along the path. In this paper, we propose a new restoration algorithm based on minimum cost which contains some linear impairments. The proposed algorithm takes account of multi-granularity in multi-domain. Wavelength conversion is needed, because that different switching granularity is supported in the network. Simulation results show that the proposed Minic-MDMG algorithm is effective.