光网络是信息传送的骨干网络,在可预见的将来具有不可替代性。在中国社会向数字化、信息化、网络化发展过程中起着举足轻重的作用。中国电信网、互联网和广电网的彼此交互和渗透,固定网和移动网交织重叠,更是加剧了网络信息流量的进一步膨胀。 Optical network is the backbone network for information transmission, which is irreplaceable in the foreseeable future. In Chinese society, it plays a decisive role in the process of digitization, informationization and network development. Interaction and infiltration of China’s telecom network, Internet and broadcasting network, and the overlapping of fixed network and mobile network have aggravated the further expansion of network information flow.