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密集波分复用(DWDM)的出现扩大了长途传输网的容量,但是DWDM技术的复杂性和使用了昂贵的器件,限制了DWDM在城域网的应用。最新研制的光纤,其在整个宽工作带,包括在(1380±3)nm上都具有低水峰。低水峰光纤与粗波分复用(CWDM)系统比用标准单模光纤(SMF)的同一系统所用的信道间隔宽33%。经过恶劣的环境试验证明,低水峰光纤具有稳定的抗氢气引起的衰减性能,可确保现场安装的低水峰光纤光缆长期可靠地工作。由于低水峰光纤具有优异的弯曲敏感性,使其与最近研制的宽带接入技术,即所谓的光纤到驻地(FTTP)完全相适应。
The advent of dense wavelength division multiplexing (DWDM) has extended the capacity of long-haul transport networks, but the complexity of DWDM technology and the use of costly devices have limited the use of DWDM in MANs. The newly developed optical fiber has a low water peak over the entire working band, including at (1380 ± 3) nm. Low water peak fiber and coarse wavelength division multiplexing (CWDM) systems use 33% wider channel spacing than the same system using standard single mode fiber (SMF). After harsh environmental tests prove that low water peak optical fiber with a stable anti-hydrogen-induced attenuation performance to ensure that the installation of low water peak fiber optic cables installed long-term and reliable work. Due to its excellent bend sensitivity, the low water peak optical fiber is fully compatible with the recently developed broadband access technology, the so-called Fiber To The Premises (FTTP).