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1. 发明公开

EP1583186A1 Optical amplifier and controlling method for Raman amplifier 有权
标题翻译：光放大器和方法，用于控制一个喇曼放大器
公开(公告)号：EP1583186A1
公开(公告)日：2005-10-05
申请号：EP04018359.2
申请日：2004-08-03
申请人： FUJITSU LIMITED
发明人： Hayashi, Etsuko, Fujitsu Limited
IPC分类号： H01S3/30 , H04B10/17
CPC分类号： H01S3/302 , H01S3/094096 , H01S3/10069 , H01S3/1301 , H01S3/2375 , H04B10/2916
摘要： There is provided an optical amplifier comprising an optical amplifier (1) comprising a Raman amplifying section (2), a rare earth element doped fiber amplifying section (8) to be disposed in the case where the number of operating channels exceeds the number of allowable channels A, and a control section (7). And the control section (7) controls the wavelength of pumping light of the Raman amplifying section (2) such that the signal light of the entire band is able to be amplified, in the case where the number of operating channels is equal to that of allowable channels A or less, and whereas the control section controls the wavelength of pumping light of the Raman amplifying section such that the signal light of the band located out of the amplifying band of the rare earth element doped fiber amplifier is able to be amplified, in the case where the number of operating channels becomes greater than the number of allowable channels A.

2. 发明公开

EP1182808A3 Optical amplifier with pump light source control for raman amplification 有权
标题翻译：一种光放大器，与所述激励光用于喇曼放大的控制
公开(公告)号：EP1182808A3
公开(公告)日：2005-12-14
申请号：EP01106362.5
申请日：2001-03-16
申请人： FUJITSU LIMITED
发明人： Hayashi, Etsuko, Fujitsu Limited , Tanaka, Tomoto, Fujitsu Hokkaido Digital Techn.Ltd , Sugaya, Yasushi, Fujitsu Limited , Onaka, Miki, Fujitsu Limited
IPC分类号： H04B10/17
CPC分类号： H04B10/2916 , H01S3/06754 , H01S3/1301 , H01S3/302 , H04B10/0777 , H04B10/07955 , H04B10/0797 , H04B2210/077
摘要： A Raman amplifier for amplifying a wavelength division multiplexed (WDM) light including signal lights wavelength division multiplexed together. The amplifier includes an optical amplifying medium and a controller. The optical amplifying medium uses Raman amplification to amplify the WDM light in accordance with multiplexed pump lights of different wavelengths travelling through the optical amplifying medium. The WDM light is amplified in a wavelength band divided into a plurality of individual wavelength bands. The controller controls power of each pump light based on a wavelength characteristic of gain generated in the optical amplifying medium in the individual wavelength bands.

3. 发明公开

EP1283566A2 Optical amplifier for amplifying multi-wavelength light 有权
标题翻译： OptischerVerstärkerzurVerstärkungvon Licht mit mehrerenWellenlängen
公开(公告)号：EP1283566A2
公开(公告)日：2003-02-12
申请号：EP02001080.7
申请日：2002-01-22
申请人： FUJITSU LIMITED
发明人： Onaka, Miki, Fujitsu Limited , Sugaya, Yasushi, Fujitsu Limited , Hayashi, Etsuko, Fujitsu Limited , Shukunami, Norifumi, Fujitsu Higashi-Nihon , Watanbe, Manabu, Fujitsu Higashi-Nihon
IPC分类号： H01S3/067
CPC分类号： H01S3/094003 , H01S3/06758 , H01S3/094015 , H01S3/094061 , H01S3/10015 , H01S3/1301 , H01S3/1305 , H01S2301/02 , H01S2301/04
摘要： Multi-wavelength light is inputted to an erbium-doped fiber (1) as an optical amplification medium. Pump light is supplied to this erbium-doped fiber (1). When a transition from a state signal light on the short wavelength area in the multi-wavelength is input in the erbium-doped fiber (1) to a state the signal light is not input, the output power of signal light on the long wavelength area in the multi-wavelength light can vary. The wavelength of pump light is selected in such a way that the output power of the signal light on the long wavelength area can not be negative when the power varies.
摘要翻译：多波长光作为光放大介质输入到掺铒光纤（1）。泵浦光被供给到掺铒光纤（1）。当在掺铒光纤（1）中将来自多波长的短波长区域上的状态信号光的转变输入到不输入信号光的状态时，长波长区域的信号光的输出功率在多波长光下可以变化。选择泵浦光的波长，使得当功率变化时，长波长区域上的信号光的输出功率不能为负。

4. 发明授权

EP1330055B1 Raman amplifier and wavelength division multiplexing optical communication system 有权
标题翻译：拉曼放大器和光通信系统与波分复用
公开(公告)号：EP1330055B1
公开(公告)日：2008-09-03
申请号：EP02023035.5
申请日：2002-10-16
申请人： FUJITSU LIMITED
发明人： Onaka, Miki, Fujitsu Limited , Sugaya, Yasushi, Fujitsu Limited , Hayashi, Etsuko, Fujitsu Limited
IPC分类号： H04B10/17 , H01S3/30
CPC分类号： H04B10/2916 , H01S3/06754 , H01S3/094003 , H01S3/094042 , H01S3/094046 , H01S3/094096 , H01S3/1301 , H01S3/1618 , H01S3/302 , H01S5/141

5. 发明公开

EP1385280A3 Raman amplifier 有权
标题翻译：拉曼放大器
公开(公告)号：EP1385280A3
公开(公告)日：2005-09-14
申请号：EP03016532.8
申请日：2003-07-23
申请人： FUJITSU LIMITED
发明人： Sugaya, Yasushi, Fujitsu Limited , Muro, Shinichirou, Fujitsu Limited , Hayashi, Etsuko, Fujitsu Limited
IPC分类号： H04B10/17 , H01S3/30
CPC分类号： H04B10/296 , H04B10/0775 , H04B10/2916
摘要： Multi-wavelength light, including a plurality of segments of light signal with a different wavelength each, is inputted into a Raman amplification fiber (1). Pumping light generated by a pumping light source (2) is supplied to the Raman amplification fiber (1) in the opposite direction of the transmission direction of the multi-wavelength light. An auxiliary light source (13) generates auxiliary light. An auxiliary light control circuit (14) adjusts the optical power of the auxiliary light with a prescribed response time, based on the change in input power of the multi-wavelength light. The auxiliary light is supplied to the Raman amplification fiber (1) in the same direction as the transmission direction of the multi-wavelength light.
摘要翻译：包括多个不同波长的光信号段的多波长光被输入拉曼放大光纤（1）。将泵浦光源（2）产生的泵浦光沿多波长光的透射方向的相反方向提供给拉曼放大光纤（1）。辅助光源（13）产生辅助光。辅助光控制电路（14）基于多波长光的输入功率的变化，以规定的响应时间调整辅助光的光功率。辅助光以与多波长光的传输方向相同的方向被提供给拉曼放大光纤（1）。

6. 发明公开

EP1330055A2 Raman amplifier and wavelength division multiplexing optical communication system 有权
标题翻译： Ramanverstärkerund optisches Kommunikationssystem mitWellenlängenmultiplex
公开(公告)号：EP1330055A2
公开(公告)日：2003-07-23
申请号：EP02023035.5
申请日：2002-10-16
申请人： FUJITSU LIMITED
发明人： Onaka, Miki, Fujitsu Limited , Sugaya, Yasushi, Fujitsu Limited , Hayashi, Etsuko, Fujitsu Limited
IPC分类号： H04B10/17 , H01S3/30
CPC分类号： H04B10/2916 , H01S3/06754 , H01S3/094003 , H01S3/094042 , H01S3/094046 , H01S3/094096 , H01S3/1301 , H01S3/1618 , H01S3/302 , H01S5/141
摘要： The present invention has an object to provide a Raman amplifier, a WDM optical communication system and a method of controlling the Raman amplification, capable of optimizing amplification characteristics in response to a change of operating conditions of the system so that transmission quality of the WDM signal light can be maintained in good. In order to achieve the above object, in the Raman amplifier according to the present invention, a plurality of pumping light generated by a pumping light generating section capable of varying a wavelength and power of the plurality of pumping light, are multiplexed by a pumping light multiplexing section that has wavelength variable transmission characteristics, and are supplied to an optical transmission path via a pumping light supplying section, and signal light being propagated through the optical transmission path is Raman amplified, wherein the Raman amplifier comprises a pumping light administrating section that controls supply conditions of the pumping light by adjusting operational setting of the pumping light generating section and the wavelength transmission characteristics of the pumping light multiplexing section in synchronization with the change with time of the system operational conditions.
摘要翻译：本发明的目的是提供一种拉曼放大器，WDM光通信系统和一种控制拉曼放大的方法，其能够响应于系统的操作条件的变化来优化放大特性，使得WDM信号的传输质量光能保持良好。为了实现上述目的，在根据本发明的拉曼放大器中，由能够改变多个泵浦光的波长和功率的泵浦光产生部分产生的多个泵浦光通过泵浦光具有波长可变传输特性的多路复用部分，并且经由泵浦光供给部分被提供给光传输路径，并且通过光传输路径传播的信号光被拉曼放大，其中拉曼放大器包括泵浦光管理部分，其控制与系统运行条件随时间的变化同步地调整泵浦光发生部分的操作设置和泵浦光复用部分的波长传输特性来提供泵浦光的供应条件。

7. 发明授权

EP1583186B1 Optical amplifier and controlling method for Raman amplifier 有权
标题翻译：光放大器和方法，用于控制一个喇曼放大器
公开(公告)号：EP1583186B1
公开(公告)日：2007-05-30
申请号：EP04018359.2
申请日：2004-08-03
申请人： FUJITSU LIMITED
发明人： Hayashi, Etsuko, Fujitsu Limited
IPC分类号： H01S3/30 , H04B10/17
CPC分类号： H01S3/302 , H01S3/094096 , H01S3/10069 , H01S3/1301 , H01S3/2375 , H04B10/2916

8. 发明公开

EP1385280A2 Raman amplifier 有权
标题翻译： Ramanverstärker
公开(公告)号：EP1385280A2
公开(公告)日：2004-01-28
申请号：EP03016532.8
申请日：2003-07-23
申请人： FUJITSU LIMITED
发明人： Sugaya, Yasushi, Fujitsu Limited , Muro, Shinichirou, Fujitsu Limited , Hayashi, Etsuko, Fujitsu Limited
IPC分类号： H04B10/17
CPC分类号： H04B10/296 , H04B10/0775 , H04B10/2916
摘要： Multi-wavelength light, including a plurality of segments of light signal with a different wavelength each, is inputted into a Raman amplification fiber (1). Pumping light generated by a pumping light source (2) is supplied to the Raman amplification fiber (1) in the opposite direction of the transmission direction of the multi-wavelength light. An auxiliary light source (13) generates auxiliary light. An auxiliary light control circuit (14) adjusts the optical power of the auxiliary light with a prescribed response time, based on the change in input power of the multi-wavelength light. The auxiliary light is supplied to the Raman amplification fiber (1) in the same direction as the transmission direction of the multi-wavelength light.
摘要翻译：将包括多个具有不同波长的光信号段的多波长光输入拉曼放大光纤（1）。由泵浦光源（2）产生的泵浦光以与多波长光的透射方向相反的方向供给拉曼放大光纤（1）。辅助光源（13）产生辅助光。辅助光控制电路（14）基于多波长光的输入功率的变化，以规定的响应时间调整辅助光的光功率。辅助光以与多波长光的透射方向相同的方向供给到拉曼放大用光纤（1）。

9. 发明公开

EP1220385A2 Optical amplifier and method for amplifying wavelength multiplexed transmission signal light 有权
标题翻译：放大发送的波分复用信号光的光放大器和方法
公开(公告)号：EP1220385A2
公开(公告)日：2002-07-03
申请号：EP01129318.0
申请日：2001-12-14
申请人： FUJITSU LIMITED
发明人： Sugaya, Yasushi, Fujitsu Limited , Hayashi, Etsuko, Fujitsu Limited , Chikama, Terumi, Fujitsu Limited , Inagaki, Sinya, Fujitsu Limited , Shukunami, Norifumi, Fujitsu Higashi-Nihon Digital
IPC分类号： H01S3/094 , H01S3/067
CPC分类号： H01S3/06758 , H01S3/094003 , H01S2301/04
摘要： A rare earth element doped fiber forming an optical amplifier is pumped with a plurality of pumping lights to prevent drop of the inversion population ratio in the length direction of the rare earth element doped fiber.

10. 发明公开

EP1182808A2 Optical amplifier with pump light source control for raman amplification 有权
标题翻译： OptischerVerstärkermit Kontrolle des PumplichtesfürRamanverstärkung
公开(公告)号：EP1182808A2
公开(公告)日：2002-02-27
申请号：EP01106362.5
申请日：2001-03-16
申请人： FUJITSU LIMITED
发明人： Hayashi, Etsuko, Fujitsu Limited , Tanaka, Tomoto, Fujitsu Hokkaido Digital Techn.Ltd , Sugaya, Yasushi, Fujitsu Limited , Onaka, Miki, Fujitsu Limited
IPC分类号： H04B10/17
CPC分类号： H04B10/2916 , H01S3/06754 , H01S3/1301 , H01S3/302 , H04B10/0777 , H04B10/07955 , H04B10/0797 , H04B2210/077
摘要： A Raman amplifier for amplifying a wavelength division multiplexed (WDM) light including signal lights wavelength division multiplexed together. The amplifier includes an optical amplifying medium and a controller. The optical amplifying medium uses Raman amplification to amplify the WDM light in accordance with multiplexed pump lights of different wavelengths traveling through the optical amplifying medium. The WDM light is amplified in a wavelength band divided into a plurality of individual wavelength bands. The controller controls power of each pump light based on a wavelength characteristic of gain generated in the optical amplifying medium in the individual wavelength bands.
摘要翻译：一种用于放大波分复用（WDM）光的拉曼放大器，其包括波分复用在一起的信号光。放大器包括光放大介质和控制器。光放大介质使用拉曼放大来根据穿过光放大介质的不同波长的多路复用泵浦光放大WDM光。 WDM光被分成多个单独波长带的波长带放大。控制器基于在各个波长带中在光放大介质中产生的增益的波长特性来控制每个泵浦光的功率。

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