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公开(公告)号：US07307782B2
公开(公告)日：2007-12-11
申请号：US10208198
申请日：2002-07-31
IPC分类号： H01S3/00
CPC分类号： H01S3/302 , H01S3/06725 , H01S3/06754 , H01S3/094003 , H01S3/09408 , H01S3/094096
摘要： The present invention relates to a Raman amplifier where flexibility in device design considering both of Raman amplification and dispersion compensation is high. In the Raman amplifier, the Raman amplification optical fiber included in the optical amplification section and the dispersion compensating optical fiber included in the dispersion compensation section are arranged while being optically connected to each other. Since the optical amplification section and the dispersion compensation section are provided as independent optical devices, one device can be designed without being restricted to the design conditions of the other device.
摘要翻译： 拉曼放大器本发明涉及考虑拉曼放大和色散补偿的器件设计中的灵活性高的拉曼放大器。 在拉曼放大器中，包括在光放大部分中的拉曼放大光纤和包括在色散补偿部分中的色散补偿光纤被布置成彼此光学连接。 由于光放大部分和色散补偿部分被设置为独立的光学器件，所以可以设计一个器件而不限于另一个器件的设计条件。
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公开(公告)号：US20080074733A1
公开(公告)日：2008-03-27
申请号：US11979672
申请日：2007-11-07
IPC分类号： H01S3/00
CPC分类号： H01S3/302 , H01S3/06725 , H01S3/06754 , H01S3/094003 , H01S3/09408 , H01S3/094096
摘要： The present invention relates to a Raman amplifier where flexibility in device design considering both of Raman amplification and dispersion compensation is high. In the Raman amplifier, the Raman amplification optical fiber included in the optical amplification section and the dispersion compensating optical fiber included in the dispersion compensation section are arranged while being optically connected to each other. Since the optical amplification section and the dispersion compensation section are provided as independent optical devices, one device can be designed without being restricted to the design conditions of the other device.
摘要翻译： 拉曼放大器本发明涉及考虑拉曼放大和色散补偿的器件设计中的灵活性高的拉曼放大器。 在拉曼放大器中，包括在光放大部分中的拉曼放大光纤和包括在色散补偿部分中的色散补偿光纤被布置成彼此光学连接。 由于光放大部分和色散补偿部分被设置为独立的光学器件，所以可以设计一个器件而不限于另一个器件的设计条件。
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公开(公告)号：US07751706B2
公开(公告)日：2010-07-06
申请号：US12292019
申请日：2008-11-10
申请人： Hiroki Ooi , Takashi Iwabuchi , Takafumi Terahara , Junichi Kumasako , George Ishikawa , Tomoo Takahara
发明人： Hiroki Ooi , Takashi Iwabuchi , Takafumi Terahara , Junichi Kumasako , George Ishikawa , Tomoo Takahara
CPC分类号： H04B10/25133 , H04B2210/258
摘要： In order to compensate for chromatic dispersion ad dispersion slope over an entire wavelength band of the optical signal, the wavelength band is split into a plurality of bands, and chromatic dispersion compensation is made to make chromatic dispersion in a central wavelength of each of the bands zero.
摘要翻译： 为了补偿光信号的整个波长带上的色散和色散斜率，波长带被分成多个频带，并且进行色散补偿，以使得每个频带的中心波长的色散 零。
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公开(公告)号：US20100135664A1
公开(公告)日：2010-06-03
申请号：US12654752
申请日：2009-12-30
申请人： Hiroki Ooi , Takashi Iwabuchi , Takafumi Terahara , Junichi Kumasako , George Ishikawa , Tomoo Takahara
发明人： Hiroki Ooi , Takashi Iwabuchi , Takafumi Terahara , Junichi Kumasako , George Ishikawa , Tomoo Takahara
IPC分类号： H04J14/02
CPC分类号： H04B10/25133 , H04B2210/258
摘要： In order to compensate for chromatic dispersion ad dispersion slope over an entire wavelength band of the optical signal, the wavelength band is split into a plurality of bands, and chromatic dispersion compensation is made to make chromatic dispersion in a central wavelength of each of the bands zero.
摘要翻译： 为了补偿在光信号的整个波长带上的色散和色散斜率，波长带被分成多个频带，并且进行色散补偿以使得每个频带的中心波长的色散 零。
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5.发明授权公开(公告)号：US06941074B2
公开(公告)日：2005-09-06
申请号：US09800891
申请日：2001-03-08
IPC分类号： H01S3/30 , H01S3/06 , H01S3/067 , H04B10/00 , H04B10/29 , H04B10/294 , H04B10/297 , H04J14/00 , H04J14/02 , H04L5/14 , H04B10/02 , H04B10/08 , H04B10/12
CPC分类号： H04B10/2971 , H04B10/2503 , H04B10/2916
摘要： Different bands (C-band and L-band) are allotted respectively to an upstream optical signal and a downstream optical signal. In a transmission-path optical fiber for Raman amplification, the C-band optical signal is amplified by pumping light from a C-band pumping light source, and the L-band optical signal is amplified by pumping light from an L-band pumping light source. As a result of this configuration, the optical signals are Raman-amplified through backward pumping in both upstream and downstream directions, whereby negative effects, which could be exerted on the optical signals by forward pumping, can be avoided.
摘要翻译： 分别将不同的频带（C波段和L波段）分配给上行光信号和下行光信号。 在用于拉曼放大的传输路径光纤中，C波段光信号通过泵浦来自C波段泵浦光源的光而被放大，并且L波段光信号通过泵浦来自L波段泵浦光的光而被放大 资源。 作为该结构的结果，光信号通过在上下游方向上的反向泵浦而被拉曼放大，由此可以避免通过正向泵浦对光信号施加的负面影响。
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6.发明授权公开(公告)号：US06741389B2
公开(公告)日：2004-05-25
申请号：US10093818
申请日：2002-03-11
IPC分类号： H01S300
CPC分类号： H04B10/2916 , H04B2210/003 , H04B2210/258
摘要： The present invention aims at providing an optical transmission system for improving transmission characteristics, taking account of the nonlinear optical effect to be caused not only in an optical fiber transmission path wherein the distributed Raman amplification is performed but also in an amplifying medium wherein the discrete Raman amplification is performed, within an optical transmission device. To this end, the optical transmission system of the present invention controls, in each repeating section, the supplying conditions of pumping lights at a distributed Raman amplifier and a discrete Raman amplifier, based on signal light powers at a signal light input point to the optical fiber transmission path and a signal light output point from the optical fiber transmission path, and signal light powers at a signal light input point to a DCF (amplifying medium) and a signal light output point from the DCF within an optical repeater, so that an amount of nonlinear optical effect caused in one repeating section is brought to a required value or less.
摘要翻译： 本发明的目的在于提供一种用于提高传输特性的光传输系统，其考虑到不仅在其中执行分布式拉曼放大的光纤传输路径中引起的非线性光学效应，而且在其中分立拉曼 在光传输装置内进行放大。 为此，本发明的光传输系统在每个重复部分中控制在分布式拉曼放大器和离散拉曼放大器处的泵浦光的供给条件，基于在光信号光输入点处的信号光功率 光纤传输路径和来自光纤传输路径的信号光输出点，并且信号光在光中继器内的DCF（放大介质）的信号光输入点和来自DCF的信号光输出点供电，使得 在一个重复部分中引起的非线性光学效果的数量达到所需值或更小。
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公开(公告)号：US07936993B2
公开(公告)日：2011-05-03
申请号：US12654752
申请日：2009-12-30
申请人： Hiroki Ooi , Takashi Iwabuchi , Takafumi Terahara , Junichi Kumasako , George Ishikawa , Tomoo Takahara
发明人： Hiroki Ooi , Takashi Iwabuchi , Takafumi Terahara , Junichi Kumasako , George Ishikawa , Tomoo Takahara
IPC分类号： H04J14/02
CPC分类号： H04B10/25133 , H04B2210/258
摘要： In order to compensate for chromatic dispersion ad dispersion slope over an entire wavelength band of the optical signal, the wavelength band is split into a plurality of bands, and chromatic dispersion compensation is made to make chromatic dispersion in a central wavelength of each of the bands zero.
摘要翻译： 为了补偿在光信号的整个波长带上的色散和色散斜率，波长带被分成多个频带，并且进行色散补偿以使得每个频带的中心波长的色散 零。
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公开(公告)号：US20090080894A1
公开(公告)日：2009-03-26
申请号：US12292019
申请日：2008-11-10
申请人： Hiroki Ooi , Takashi Iwabuchi , Takafumi Terahara , Junichi Kumasako , George Ishikawa , Tomoo Takahara
发明人： Hiroki Ooi , Takashi Iwabuchi , Takafumi Terahara , Junichi Kumasako , George Ishikawa , Tomoo Takahara
IPC分类号： H04J14/02
CPC分类号： H04B10/25133 , H04B2210/258
摘要： In order to compensate for chromatic dispersion ad dispersion slope over an entire wavelength band of the optical signal, the wavelength band is split into a plurality of bands, and chromatic dispersion compensation is made to make chromatic dispersion in a central wavelength of each of the bands zero.
摘要翻译： 为了补偿光信号的整个波长带上的色散和色散斜率，波长带被分成多个频带，并且进行色散补偿，以使得每个频带的中心波长的色散 零。
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公开(公告)号：US20060176545A1
公开(公告)日：2006-08-10
申请号：US11389013
申请日：2006-03-27
IPC分类号： H01S3/00
CPC分类号： H04B10/2916
摘要： In a WDM transmission system employing a plurality of short wavelength bands having great attenuation due to optical fiber transmission, an optical repeater is constructed of a first multiplexing section and a second multiplexing section. The first multiplexing section is used for wavelength-multiplexing both the excitation light from a first Raman excitation light source, which distributively amplifies an S+ band included in light propagating through an optical fiber, and the light propagating through the optical fiber. The second multiplexing section is used for wavelength-multiplexing both the excitation light from a second Raman excitation light source, which distributively amplifies an S+ band included in light propagating through an optical fiber, and the light propagating through the optical fiber. The first and second multiplexing sections are provided between the optical fibers disposed between end offices. Thus an equal and satisfactory optical SN ratio even at any band are obtained.
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公开(公告)号：US07075709B2
公开(公告)日：2006-07-11
申请号：US10103690
申请日：2002-03-25
IPC分类号： H01S3/00
CPC分类号： H04B10/2916
摘要： In a WDM transmission system employing a plurality of short wavelength bands having great attenuation due to optical fiber transmission, an optical repeater is constructed of a first multiplexing section and a second multiplexing section. The first multiplexing section is used for wavelength-multiplexing both the excitation light from a first Raman excitation light source, which distributively amplifies an S+ band included in light propagating through an optical fiber, and the light propagating through the optical fiber. The second multiplexing section is used for wavelength-multiplexing both the excitation light from a second Raman excitation light source, which distributively amplifies an S+ band included in light propagating through an optical fiber, and the light propagating through the optical fiber. The first and second multiplexing sections are provided between the optical fibers disposed between end offices. Thus an equal and satisfactory optical SN ratio even at any band are obtained.
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