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公开(公告)号：US07274880B2
公开(公告)日：2007-09-25
申请号：US09991126
申请日：2001-11-16
IPC分类号： H04B10/00
CPC分类号： H04B10/2916 , H04B2210/003
摘要： A system, amplifier and method are provided for amplifying an optical signal in an optical communications system where spans between amplifiers may vary. The system includes a Raman amplifier variable gain portion and an EDFA gain portion. The amount of Raman amplifier gain is chosen to trade off accumulation of noise with accumulation of multi-path interference. This variable Raman gain is used to equalize the loss of each span so that the amount of optical power supplied at the input of the EDFA gain portion is substantially constant throughout the system.
摘要翻译： 提供了一种用于放大光通信系统中的光信号的系统，放大器和方法，其中放大器之间的跨度可以变化。 该系统包括拉曼放大器可变增益部分和EDFA增益部分。 选择拉曼放大器增益的量来折算多路径干扰累积的噪声累积。 该可变拉曼增益用于均衡每个跨度的损耗，使得在EDFA增益部分的输入处提供的光功率的量在整个系统中基本上是恒定的。
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2.发明授权公开(公告)号：US07139489B2
公开(公告)日：2006-11-21
申请号：US09991154
申请日：2001-11-16
IPC分类号： H04B10/12
CPC分类号： H04B10/25253
摘要： A method of compensating for chromatic dispersion in an optical signal transmitted on a long-haul terrestrial optical communication system including a plurality of spans, including: allowing chromatic dispersion to accumulate over at least one of the spans to a first predetermined level; and compensating for the first pre-determined level of dispersion using a dispersion compensating fiber causing accumulation of dispersion to a second predetermined level. There is also provided a hybrid Raman/EDFA amplifier including a Raman portion and an EDFA portion with a dispersion compensating fiber disposed therebetween. An optical communication system and a method of communicating an optical signal using such a Raman/EDFA amplifier are also provided.
摘要翻译： 一种补偿在包括多个跨度的长途陆地光通信系统中发送的光信号中的色散的方法，包括：允许色散在所述跨度中的至少一个上积累到第一预定水平; 以及使用使色散累积到第二预定水平的色散补偿光纤来补偿第一预定等级的色散。 还提供了包括拉曼部分和EDFA部分的混合拉曼/ EDFA放大器，其间布置有色散补偿光纤。 还提供了一种光通信系统和使用这种拉曼/ EDFA放大器传送光信号的方法。
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