【摘要】 主要介绍了增加骨干网带宽的3种途径：增加每根光纤的承载波长数、增加每个波长信道的数据速率、增加网络的带宽使用效率。更多还原

【Abstract】 It mainly introduces three methods on increasing backbone network bandwidth, that is increasing wavelength number in each piece of optical fiber, improving data rate of each wavelength channel, increasing utility efficiency of network bandwidth．更多还原