公开(公告)号：US06876803B2

公开(公告)日：2005-04-05

申请号：US10245661

申请日：2002-09-17

申请人： Kazuhiko Aikawa ,  Shogo Shimizu ,  Masakazu Nakayama ,  Kuniharu Himeno

发明人： Kazuhiko Aikawa ,  Shogo Shimizu ,  Masakazu Nakayama ,  Kuniharu Himeno

IPC分类号： G02B6/036 ,  G02B6/34 ,  H04B10/2525 ,  G02B6/16

CPC分类号： G02B6/03644 ,  G02B6/02004 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/29377 ,  H04B10/25253

摘要： The present invention provides an optical transmission system that enables high-speed transmission of 40 Gb/s with low residual dispersion while maintaining the yield of a dispersion compensating fiber. In the present invention, the dispersion compensating fiber is connected to each span of an optical fiber for transmission. One set of an optical transmission path is formed by this optical fiber for transmission and the dispersion compensating fiber, and this one set of optical transmission path is connected in multiple stages and connected to a transmitter and a receiver. By setting the conditions of dispersion compensation in each span comparatively leniently, managing the residual dispersion of each transmission span, and suitably arranging each transmission span, an optical transmission system is composed in which adequate dispersion compensation is performed over the entire optical transmission path.

摘要翻译： 本发明提供了一种光传输系统，其能够在保持色散补偿光纤的产量的同时以低残余色散实现40Gb / s的高速传输。 在本发明中，色散补偿光纤连接到用于传输的光纤的每个跨度。 这种光传输路径由这种用于传输的光纤和色散补偿光纤形成，并且这一组光传输路径被多级连接并连接到发射机和接收机。 通过相对宽松地设置每个范围内的色散补偿条件，管理每个传输跨度的残余色散，并适当地布置每个传输跨度，组成了在整个光传输路径上执行适当的色散补偿的光传输系统。

公开(公告)号：US20050041929A1

公开(公告)日：2005-02-24

申请号：US10950304

申请日：2004-09-23

申请人： Takaaki Suzuki ,  Shogo Shimizu ,  Kazuhiko Aikawa ,  Kuniharu Himeno

发明人： Takaaki Suzuki ,  Shogo Shimizu ,  Kazuhiko Aikawa ,  Kuniharu Himeno

IPC分类号： G02B6/02 ,  G02B6/036 ,  G02B6/255 ,  G02B6/26

CPC分类号： G02B6/02261 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/0365 ,  G02B6/2552

摘要： In fusion-splicing a dispersion compensating optical fiber having a negative dispersion slope, with a connection optical fiber having a different near field pattern from that of the dispersion compensating optical fiber, if for the connection optical fiber, one is selected such that a theoretical joint loss in a used wavelength, obtained from an overlap integral of a near field pattern of the dispersion compensating optical fiber after fusion splicing and a near field pattern of the connection optical fiber after fusion splicing is presumed to be 0.3 dB or less, in an unconnected state, a construction enabling connection at a low loss results.

摘要翻译： 在使用具有与色散补偿光纤不同的近场图案的连接光纤熔接具有负色散斜率的色散补偿光纤时，如果对于连接光纤，选择一个理论接头 在熔接后的色散补偿光纤的近场图案与熔接后的连接光纤的近场图案的重叠积分中获得的使用波长的损失在未连接的情况下被推定为0.3dB以下 状态，一种能够以低损失结果实现连接的结构。

公开(公告)号：US20050013572A1

公开(公告)日：2005-01-20

申请号：US10866828

申请日：2004-06-15

申请人： Ning Guan ,  Kazuhiko Aikawa ,  Masashi Ikeda ,  Kuniharu Himeno ,  Koichi Harada

发明人： Ning Guan ,  Kazuhiko Aikawa ,  Masashi Ikeda ,  Kuniharu Himeno ,  Koichi Harada

IPC分类号： G02B6/02 ,  G02B6/036 ,  G02B6/14 ,  G02B6/28 ,  G02B6/287 ,  G02B6/34 ,  G02B6/22

CPC分类号： G02B6/03644 ,  G02B6/02261 ,  G02B6/03627 ,  G02B6/14 ,  G02B6/268 ,  G02B6/2835

摘要： A higher order mode dispersion compensating fiber includes an optical fiber and a first loss layer which is provided within the fiber and which attenuates a lower order mode propagating through the optical fiber while not attenuating a higher order mode which is higher than the lower order mode. A dispersion compensating fiber mode converter for a higher order fiber includes a single mode fiber; a higher order mode dispersion compensating fiber; and a fused and extended portion which has been formed by fusing and extending the single mode fiber and the higher order mode fiber. The fused and extended portion converts between the LP01 mode of the single mode fiber and the LP02 mode of the higher order mode dispersion compensating fiber.

摘要翻译： 高阶模式色散补偿光纤包括光纤和第一损耗层，该第一损耗层设置在光纤内，并且衰减低通过光纤传播的低阶模，同时不衰减高于低阶模的高阶模。 用于高阶光纤的色散补偿光纤模式转换器包括单模光纤; 高阶模色散补偿光纤; 以及通过熔融和延伸单模光纤和高阶模光纤而形成的熔接和延伸部分。 融合和扩展部分在单模光纤的LP01模式和高阶模色散补偿光纤的LP02模式之间转换。