【作者】 陈晓丹； 杨延嵩； 毕继峰； 张宁；

【Author】 CHEN Xiaodan;YANG Yansong;BI Jifeng;ZHANG Ning;Smart City College,Beijing Union University;China Tower Co.,Ltd.Changchun Branch;

【机构】 北京联合大学智慧城市学院； 中国铁塔股份有限公司长春分公司；

【摘要】 光网络具有传输速率高,通信容量大的优点,已成为骨干传输网络。随着网络技术的不断进步,通过技术改造,建立在波分复用W D M基础上的光网络成为主流网络。但在W D M网络中,波长的使用受到了一定的限制,必须满足波长连接性的要求。随后,对光网络节点进行技术改造,在光节点中加装了波长变换器,使光网络节点能输出不同的波长,这使光网络增加了灵活性。在光网络中,只有符合要求的一小部分波长才能应用。波长对应的就是频谱,因此频谱是光网络中宝贵的资源,必须充分利用,以提高网络的运行效率。但是,在光网络信道的建立与拆除过程中,会留下大量的频谱碎片,这些频谱碎片是不能被利用的,这对于光网络来说是一种极大的浪费。为了避免这种现象,分析了频谱技术的特点,利用频谱整合,处理频谱碎片,这样能够提高频谱利用率,提升网络的运行效率。更多还原

【Abstract】 Optical networks have the advantages of high transmission rates and large communication capacity,optical networks have become backbone transmission networks.With the continuous advancement of network technology,optical networks based on wavelength division multiplexing(WDM) have become mainstream networks through technological transformation.However,in WDM networks,the use of wavelengths is subject to certain limitations and must meet the requirements of wavelength connectivity.Then technological improvements are made to the optical network nodes by installing wavelength converters,allowing them to output different wavelengths,which increases the flexibility of the optical network.In optical networks,only a small portion of wavelengths that meet the requirements can be applied.The wavelength corresponds to the spectrum,therefore,the spectrum is a valuable resource in optical networks and must be fully utilized to improve the operational efficiency of the network.However,in the process of establishing and dismantling optical network channels,a large amount of spectrum fragments will be left behind,which cannot be utilized and is a great waste for optical networks.To overcome this phenomenon,the characteristics of spectrum technology are analyzed,and spectrum integration is utilized to process spectrum fragments,which can improve spectrum utilization and enhance network efficiency.更多还原