Abstract: All-optical crossover technology is a key technology to realize all-optical network transmission, which can meet the needs of ultra-large-capacity data transmission, flexible network adjustment, low-latency transmission, and convenient operation and maintenance. This paper researches on the development status, node structure, characteristic analysis, and analyzes the application of ultra-large capacity all-optical crossover technology.

Key words: all-optical crossover, ultra-large capacity, all-optical network