OTN将成为未来主要的光传送网技术，超长跨距的发展与光学触控模组技术的发展相结合，将进一步扩展OTN的组网能力，提高密集波分复用系统的传输效率。本文首先介绍了OTN技术的发展背景、基本概念及有关特性，给出了OTN技术的网络结构，各层的功能，阐述了OTN技术的应用领域，最后对OTN技术前景进行了展望。%OTN will be the next major optical transport network technology, development and the development of long span optical touch technology modules combine OTN networking capability will further expand and improve the transmission efficiency of dense wavelength division multiplexing systems. This paper describes the development of OTN technology background, basic concepts and related properties, given the structure of OTN network technology, the function of each layer, describes the applications OTN technology, the last of OTN technology prospected.
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