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11. 发明申请

US20070109628A1 Fast Dynamic Gain Control in Cascaded Raman Fiber Amplifiers 有权
公开(公告)号：US20070109628A1
公开(公告)日：2007-05-17
申请号：US11424315
申请日：2006-06-15
申请人： Xiang Zhou , Martin Birk
发明人： Xiang Zhou , Martin Birk
IPC分类号： H01S3/00
CPC分类号： H04B10/296 , H01S3/005 , H01S3/06754 , H01S3/06758 , H01S3/06766 , H01S3/0677 , H01S3/094011 , H01S3/094046 , H01S3/094096 , H01S3/10007 , H01S3/10015 , H01S3/1301 , H01S3/302 , H01S2301/04 , H01S2301/06 , H04B10/2916 , H04B10/2942
摘要： The present invention provides methods and apparatuses for controlling a gain of a bidirectionally-pumped Raman fiber amplifier having both forward optical pumps and backward optical pumps. The overall gain is controlled by adjusting the forward optical pumps, while the power levels of the backward optical pumps are essentially fixed. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one forward optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump.

12. 发明授权

US06813067B1 Method and apparatus for providing a broadband raman amplifier with improved noise performance 有权
标题翻译：提供具有改善的噪声性能的宽带拉曼放大器的方法和装置
公开(公告)号：US06813067B1
公开(公告)日：2004-11-02
申请号：US10288131
申请日：2002-11-05
申请人： Martin Birk , Xiang Zhou
发明人： Martin Birk , Xiang Zhou
IPC分类号： H01S300
CPC分类号： H01S3/302 , H01S3/1022 , H01S2301/02
摘要： A method and apparatus is presented which reduces noise degradation in the shorter wavelength band by using modulation of one/multiple pumps plus multiple-order Raman amplification. Such a scheme is very suitable for the case of SSMF fiber where pump-pump induced four-wave mixing (FWM) effects are negligible. Further, a group Time Domain Multiplexing (TDM) configuration is provided to simultaneously reduce the amplified spontaneous emission (ASE) noise and pump-pump induced FWM effects for the case of NZ-DSF fiber.
摘要翻译：提出了一种方法和装置，其通过使用一个/多个泵加多次拉曼放大的调制来减少较短波段中的噪声降低。这种方案非常适合于泵浦泵浦引起的四波混频（FWM）效应可忽略的SSMF纤维的情况。此外，提供组合时域多路复用（TDM）配置以同时降低对于NZ-DSF光纤的情况的放大的自发发射（ASE）噪声和泵浦泵感应的FWM效应。

13. 发明授权

US07554719B2 Fast dynamic gain control in an optical fiber amplifier 有权
标题翻译：光纤放大器中的快速动态增益控制
公开(公告)号：US07554719B2
公开(公告)日：2009-06-30
申请号：US11858501
申请日：2007-09-20
申请人： Xiang Zhou , Martin Birk
发明人： Xiang Zhou , Martin Birk
IPC分类号： H04B10/17 , H04B10/12
CPC分类号： H01S3/302 , H01S3/06754 , H01S3/094096 , H01S3/10015 , H01S2301/04 , H04B10/2916 , H04B10/296
摘要： The present invention provides methods and apparatuses for controlling a gain of an optical fiber amplifier. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump. The dynamic gain control technique is applicable to an Erbium-doped fiber/waveguide amplifier. Also, a dynamic gain control technique controls a backward-pumped Raman amplifier, in which the power variation is determined at one geographical location and the optical pumps are controlled at another geographical location.
摘要翻译：本发明提供了用于控制光纤放大器的增益的方法和装置。增益电路以开环配置工作，并且使用将至少一个波长区域的功率变化与用于至少一个光泵的泵功率调整相关联的预定功能。输入信号功率变化与所需泵浦功率调整之间的两个近似线性关系用于控制拉曼光纤放大器。每个近似线性关系包括至少一个线性系数，其涉及特定波长区域的功率变化和特定拉曼泵的功率调整。动态增益控制技术适用于掺铒光纤/波导放大器。此外，动态增益控制技术控制反向泵浦拉曼放大器，其中在一个地理位置确定功率变化，并且将光泵控制在另一地理位置。

14. 发明授权

US07436582B2 Fast dynamic gain control in a bidirectionally-pumped Raman fiber amplifier 有权
标题翻译：双向泵浦拉曼光纤放大器中的快速动态增益控制
公开(公告)号：US07436582B2
公开(公告)日：2008-10-14
申请号：US11424312
申请日：2006-06-15
申请人： Xiang Zhou , Martin Birk
发明人： Xiang Zhou , Martin Birk
IPC分类号： H01S4/00 , H04B10/12
CPC分类号： H01S3/302 , H01S3/06754 , H01S3/094011 , H01S3/094046 , H01S3/094096 , H01S3/10015 , H01S3/1301 , H01S2301/04 , H04B10/2916 , H04B10/2942 , H04B10/296
摘要： The present invention provides methods and apparatuses for controlling a gain of a bidirectionally-pumped Raman fiber amplifier having both forward optical pumps and backward optical pumps. The overall gain is controlled by adjusting the forward optical pumps, while the power levels of the backward optical pumps are essentially fixed. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one forward optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump.
摘要翻译：本发明提供了用于控制具有正向光泵和反向光泵的双向泵浦拉曼光纤放大器的增益的方法和装置。通过调整正向光泵来控制总体增益，而反向光泵的功率电平基本上是固定的。增益电路以开环配置工作，并且使用将至少一个波长区域的功率变化与至少一个正向光泵的泵浦功率调整相关联的预定功能。输入信号功率变化与所需泵浦功率调整之间的两个近似线性关系用于控制拉曼光纤放大器。每个近似线性关系包括至少一个线性系数，其涉及特定波长区域的功率变化和特定拉曼泵的功率调整。

15. 发明授权

US07280271B2 Fast dynamic gain control in cascaded Raman fiber amplifiers 有权
公开(公告)号：US07280271B2
公开(公告)日：2007-10-09
申请号：US11424314
申请日：2006-06-15
申请人： Xiang Zhou , Martin Birk
发明人： Xiang Zhou , Martin Birk
IPC分类号： H01S4/00 , H04B10/12
CPC分类号： H04B10/296 , H01S3/005 , H01S3/06754 , H01S3/06758 , H01S3/06766 , H01S3/0677 , H01S3/094011 , H01S3/094046 , H01S3/094096 , H01S3/10007 , H01S3/10015 , H01S3/1301 , H01S3/302 , H01S2301/04 , H01S2301/06 , H04B10/2916 , H04B10/2942
摘要： The present invention provides methods and apparatuses for controlling a gain of a bidirectionally-pumped Raman fiber amplifier having both forward optical pumps and backward optical pumps. The overall gain is controlled by adjusting the forward optical pumps, while the power levels of the backward optical pumps are essentially fixed. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one forward optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump.

16. 发明授权

US07280270B2 Fast dynamic gain control in cascaded Raman fiber amplifiers 有权
标题翻译：级联拉曼光纤放大器的快速动态增益控制
公开(公告)号：US07280270B2
公开(公告)日：2007-10-09
申请号：US11424309
申请日：2006-06-15
申请人： Xiang Zhou , Martin Birk
发明人： Xiang Zhou , Martin Birk
IPC分类号： H01S4/00 , H04B10/12
CPC分类号： H01S3/06758 , H01S3/005 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/10007 , H01S3/10015 , H01S3/302 , H01S2301/04 , H01S2301/06 , H04B10/2916 , H04B10/2942 , H04B10/296
摘要： The present invention provides methods and apparatuses for controlling a gain of a bidirectionally-pumped Raman fiber amplifier having both forward optical pumps and backward optical pumps. The overall gain is controlled by adjusting the forward optical pumps, while the power levels of the backward optical pumps are essentially fixed. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one forward optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump.
摘要翻译：本发明提供了用于控制具有正向光泵和反向光泵的双向泵浦拉曼光纤放大器的增益的方法和装置。通过调整正向光泵来控制总体增益，而反向光泵的功率电平基本上是固定的。增益电路以开环配置工作，并且使用将至少一个波长区域的功率变化与至少一个正向光泵的泵浦功率调整相关联的预定功能。输入信号功率变化与所需泵浦功率调整之间的两个近似线性关系用于控制拉曼光纤放大器。每个近似线性关系包括至少一个线性系数，其涉及特定波长区域的功率变化和特定拉曼泵的功率调整。

17. 发明申请

US20070109626A1 Fast Dynamic Gain Control in a Bidirectionally-Pumped Raman Fiber Amplifier 有权
公开(公告)号：US20070109626A1
公开(公告)日：2007-05-17
申请号：US11424312
申请日：2006-06-15
申请人： Xiang Zhou , Martin Birk
发明人： Xiang Zhou , Martin Birk
IPC分类号： H01S3/00
CPC分类号： H01S3/302 , H01S3/06754 , H01S3/094011 , H01S3/094046 , H01S3/094096 , H01S3/10015 , H01S3/1301 , H01S2301/04 , H04B10/2916 , H04B10/2942 , H04B10/296
摘要： The present invention provides methods and apparatuses for controlling a gain of a bidirectionally-pumped Raman fiber amplifier having both forward optical pumps and backward optical pumps. The overall gain is controlled by adjusting the forward optical pumps, while the power levels of the backward optical pumps are essentially fixed. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one forward optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump.

18. 发明申请

US20070109623A1 Fast Dynamic Gain Control in a Bidirectionally-Pumped Raman Fiber Amplifier 审中-公开
标题翻译：双向泵浦拉曼光纤放大器中的快速动态增益控制
公开(公告)号：US20070109623A1
公开(公告)日：2007-05-17
申请号：US11424305
申请日：2006-06-15
申请人： Xiang Zhou , Martin Birk
发明人： Xiang Zhou , Martin Birk
IPC分类号： H01S3/00
CPC分类号： H01S3/06758 , H01S3/005 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/10015 , H01S3/302 , H01S2301/04 , H01S2301/06 , H04B10/2916
摘要： The present invention provides methods and apparatuses for controlling a gain of a bidirectionally-pumped Raman fiber amplifier having both forward optical pumps and backward optical pumps. The overall gain is controlled by adjusting the forward optical pumps, while the power levels of the backward optical pumps are essentially fixed. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one forward optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump.
摘要翻译：本发明提供了用于控制具有正向光泵和反向光泵的双向泵浦拉曼光纤放大器的增益的方法和装置。通过调整正向光泵来控制总体增益，而反向光泵的功率电平基本上是固定的。增益电路以开环配置工作，并且使用将至少一个波长区域的功率变化与至少一个正向光泵的泵浦功率调整相关联的预定功能。输入信号功率变化与所需泵浦功率调整之间的两个近似线性关系用于控制拉曼光纤放大器。每个近似线性关系包括至少一个线性系数，其涉及特定波长区域的功率变化和特定拉曼泵的功率调整。

19. 发明申请

US20060187539A1 Fast dynamic gain control in an optical fiber amplifier 有权
公开(公告)号：US20060187539A1
公开(公告)日：2006-08-24
申请号：US11274666
申请日：2005-11-15
申请人： Xiang Zhou , Martin Birk
发明人： Xiang Zhou , Martin Birk
IPC分类号： H01S3/00
CPC分类号： H01S3/10007 , H01S3/06754 , H01S3/10015 , H01S3/302 , H04B10/2916 , H04B10/2942 , H04B10/296
摘要： The present invention provides methods and apparatuses for controlling a gain of an optical fiber amplifier. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump. The dynamic gain control technique is applicable to an Erbium-doped fiber/waveguide amplifier. Also, a dynamic gain control technique controls a backward-pumped Raman amplifier, in which the power variation is determined at one geographical location and the optical pumps are controlled at another geographical location.

20. 发明授权

US07046427B1 Method and apparatus for providing a broadband raman amplifier with improved noise performance 失效
标题翻译：提供具有改善的噪声性能的宽带拉曼放大器的方法和装置
公开(公告)号：US07046427B1
公开(公告)日：2006-05-16
申请号：US10861196
申请日：2004-06-04
申请人： Martin Birk , Xiang Zhou
发明人： Martin Birk , Xiang Zhou
IPC分类号： H01S3/00
CPC分类号： H01S3/302 , H01S3/1022 , H01S2301/02
摘要： A method and apparatus is presented which reduces noise degradation in the shorter wavelength band by using modulation of one/multiple pumps plus multiple-order Raman amplification. Such a scheme is very suitable for the case of SSMF fiber where pump—pump induced four-wave mixing (FWM) effects are negligible. Further, a group Time Domain Multiplexing (TDM) configuration is provided to simultaneously reduce the amplified spontaneous emission (ASE) noise and pump—pump induced FWM effects for the case of NZ-DSF fiber.
摘要翻译：提出了一种方法和装置，其通过使用一个/多个泵加多次拉曼放大的调制来减少较短波段中的噪声降低。这种方案非常适合于泵浦泵浦引起的四波混频（FWM）效应可忽略的SSMF纤维的情况。此外，提供组合时域多路复用（TDM）配置以同时降低对于NZ-DSF光纤的情况的放大的自发发射（ASE）噪声和泵浦泵感应的FWM效应。

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