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公开(公告)号:US06792214B1
公开(公告)日:2004-09-14
申请号:US09671924
申请日:2000-09-28
IPC分类号: H04B1012
CPC分类号: H04B10/25133
摘要: An optical transmission system designed for gigabit pulse rates and Raman pumping in which there is essentially no pre-dispersion compensation and the in-line dispersion compensation at the start of each span is overcompensation of between 110 and 120 of the compensation needed to neutralize the dispersion of its immediately preceding span.
摘要翻译: 设计用于千兆脉冲速率和拉曼泵浦的光传输系统,其中基本上没有预分散补偿,并且在每个跨度开始时的在线色散补偿是中和分散所需的补偿的110和120之间的过补偿 的前一个跨度。
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公开(公告)号:US5611016A
公开(公告)日:1997-03-11
申请号:US660639
申请日:1996-06-07
CPC分类号: G02B6/02247 , G02B6/02257 , G02B6/02271 , G02B6/0228 , G02B6/29374 , G02B6/441 , G02B6/4432 , G02B6/4433 , G02B6/4401
摘要: A dispersion-balanced optical cable 90 reduces four-photon mixing in Wave Division Multiplexing (WDM) systems and is effective to reduce cumulative dispersion D substantially to zero. The dispersion-balanced optical cable 90 includes one or more optical fibers 90-1 having positive dispersion D.sub.1, and one or more optical fibers 90-2 having negative dispersion D.sub.2. The fibers are singlemode and are suitable for the transmission of optical signals in the 1550 nm region. At this wavelength, the positive-dispersion fibers have a chromatic dispersion of about +2.3 ps/nm.km, and the negative-dispersion fibers have a chromatic dispersion of about -1.6 ps/nm.km. The dispersion-balance optical cable preferably includes an equal number of positive- and negative-dispersion fibers in the same cable. Various cable configurations 60, 80, 90 can be used including: a ribbon 60 which comprises a planar array of optical fibers bound together by a matrix material 65; groups of positive- and negative-dispersion fibers enclosed within a plastic tube 81; or other known configurations. An improved WDM system 100 interconnects two dispersion-balanced cables 90-90, and a crossover connection 105 is made between the positive-dispersion fibers 90-1 of one cable 90 and the negative-dispersion fibers 90-2 of the other cable 90.
摘要翻译: 色散平衡光缆90减少波分复用(WDM)系统中的四光子混合,并且有效地将累积色散D基本上减小到零。 色散平衡光缆90包括具有正色散D1的一个或多个光纤90-1和具有负色散D2的一个或多个光纤90-2。 光纤是单模的,适用于在1550nm区域传输光信号。 在这种波长下,正色散光纤具有约+ 2.3ps / nm.km的色散,负色散光纤具有约-1.6ps / nm.km的色散。 分散平衡光缆优选地在相同的电缆中包括相等数量的正和负分散光纤。 可以使用各种电缆配置60,80,90,包括:带60,其包括由矩阵材料65结合在一起的光纤的平面阵列; 一组包封在塑料管81内的正和负分散纤维; 或其他已知配置。 改进的WDM系统100互连两个色散平衡电缆90-90,并且在一个电缆90的正分散光纤90-1和另一电缆90的负分散光纤90-2之间形成交叉连接105。
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公开(公告)号:US5905838A
公开(公告)日:1999-05-18
申请号:US025195
申请日:1998-02-18
申请人: Arthur F. Judy , David Kalish , Raymond Bradfield Kummer , David Wayne Peckham , William Alfred Reed
发明人: Arthur F. Judy , David Kalish , Raymond Bradfield Kummer , David Wayne Peckham , William Alfred Reed
CPC分类号: G02B6/03666 , G02B6/02223 , G02B6/02242 , G02B6/02271 , G02B6/0281 , G02B6/03627 , G02B6/03644 , H04B10/291 , H04B10/2916 , G02B6/02009 , G02B6/03611 , H04B2210/258
摘要: Simultaneous dense WDM operation in both the 1310 nm and 1550 nm transparency windows of silica-based optical fiber, is enabled by a fiber design providing for nulled dispersion within a critically positioned wavelength range. Design provides for values of dispersion in both windows sufficiently low for desired per-channel bit rate, and, at the same time, sufficiently high to maintain effects of non-linear dispersion within tolerable limits for WDM operation. Fiber fabrication and system design are described.
摘要翻译: 在硅基光纤的1310nm和1550nm透明窗口中的同时密集WDM操作,通过提供在临界定位的波长范围内的零色散的光纤设计来实现。 设计提供了两个窗口中的色散值对于期望的每通道位速率足够低,并且同时足够高以维持非线性色散在WDM操作的可容许限度内的影响。 描述了光纤制造和系统设计。
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