随着动态可配置的OADM、OXC、可变波长激光器和全光再生器及其他重要光电器件的成熟，光传送网的灵活带宽调度能力可得以实现，在电层、光层的不同层面上都能进行业务的自由调度和分配。从长远的观点看，全光化是传送网演变的最高境界，它需要光交换技术的非凡进步。但现今许多 With the maturity of dynamically configurable OADMs, OXCs, variable wavelength lasers and all-optical regenerators and other important optoelectronic devices, the flexible bandwidth scheduling capabilities of optical transport networks can be achieved at both the electrical and optical levels Can conduct business free scheduling and distribution. From a long-term point of view, all-optical transmission network is the highest level of evolution, which requires extraordinary advances in optical switching technology. But many today