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1. 发明授权

US06711359B1 Optical fiber communication system employing doped optical fiber and Raman amplification 有权
标题翻译：采用掺杂光纤和拉曼放大的光纤通信系统
公开(公告)号：US06711359B1
公开(公告)日：2004-03-23
申请号：US09266093
申请日：1999-03-10
申请人： Donald G. Duff , Howard D. Kidorf , Xiaobing Ma , Karsten Rottwitt
发明人： Donald G. Duff , Howard D. Kidorf , Xiaobing Ma , Karsten Rottwitt
IPC分类号： H04B1017
CPC分类号： H04B10/297 , H04B10/2916
摘要： A lightwave communication system is provided that includes first and second optical transmitters/receivers remotely located with respect to one another. First and second optical transmission paths couple the first transmitter/receiver to the second transmitter/receiver for bidirectionally transmitting optical information therebetween. First and second doped optical fibers are respectively disposed in the first and second optical transmission paths. Optical pump energy is supplied by first and second optical pump sources. The first optical pump source generates Raman gain in the first transmission path and the second optical pump source generates Raman gain in the second transmission path. A first optical coupler is provided for optically coupling pump energy from the first pump source to the second-doped optical fiber and a second optical coupler is provided for optically coupling pump energy from the second pump source to the first doped optical fiber.
摘要翻译：提供了一种光波通信系统，其包括相对于彼此远程定位的第一和第二光发射机/接收机。第一和第二光传输路径将第一发射机/接收机耦合到第二发射机/接收机，用于双向传输光信息。第一和第二掺杂光纤分别设置在第一和第二光传输路径中。光泵浦能源由第一和第二光泵源提供。第一光泵浦源在第一传输路径中产生拉曼增益，第二光泵浦源在第二传输路径中产生拉曼增益。提供第一光耦合器用于将来自第一泵浦源的泵浦能量光耦合到第二掺杂光纤，并且提供第二光耦合器用于将来自第二泵浦源的泵浦能量光耦合到第一掺杂光纤。

2. 发明授权

US6122298A Multi-wavelength optical pump 失效
标题翻译：多波长光泵
公开(公告)号：US6122298A
公开(公告)日：2000-09-19
申请号：US742527
申请日：1996-11-01
申请人： Franklin W. Kerfoot, III , Howard D. Kidorf , Xiaobing Ma , Karsten Rottwitt
发明人： Franklin W. Kerfoot, III , Howard D. Kidorf , Xiaobing Ma , Karsten Rottwitt
IPC分类号： G02F1/35 , H01S3/06 , H01S3/094 , H01S3/30
CPC分类号： H01S3/094003 , H01S2301/02 , H01S3/094096 , H01S3/302
摘要： A high-powered optical pump includes at least two sub-pumps. Each sub-pump generates light at different wavelengths. The outputs of the sub-pumps are coupled to a remote pump fiber. The resulting light transmitted on the remote pump fiber results in a lower Raman gain and Raman noise spectral peak than that generated by existing single wavelength high-powered optical pumps at the same power level. Therefore, increased power can be transmitted on the remote pump fiber in contrast to a single wavelength pump. Additionally, the total gain spectrum available for the amplification of signals is increased.
摘要翻译：大功率光泵包括至少两个副泵。每个子泵产生不同波长的光。子泵的输出端连接到远程泵浦光纤。在远程泵浦光纤上传输的所得光导致比在相同功率水平下由现有单波长大功率光泵产生的拉曼增益和拉曼噪声频谱峰值更低的拉曼增益和拉曼噪声频谱峰值。因此，与单波长泵相反，可以在远程泵浦光纤上传输增加的功率。此外，可用于信号放大的总增益谱增加。

3. 发明授权

US06320884B1 Wide bandwidth Raman amplifier employing a pump unit generating a plurality of wavelengths 失效
标题翻译：宽带宽拉曼放大器采用产生多个波长的泵单元
公开(公告)号：US06320884B1
公开(公告)日：2001-11-20
申请号：US09030994
申请日：1998-02-26
申请人： Franklin W. Kerfoot, III , Howard Kidorf , Xiaobing Ma , Karsten Rottwitt
发明人： Franklin W. Kerfoot, III , Howard Kidorf , Xiaobing Ma , Karsten Rottwitt
IPC分类号： H01S330
CPC分类号： H01S3/302
摘要： A Raman amplifier is provided that includes at least a portion of optical fiber in which an optical signal travels. The optical fiber portion may encompass all or part of the optical transmission path of an optical communication system. A pump energy unit is provided that includes first and second pump sources providing pump power at first and second wavelengths, respectively. The first and second wavelengths generate first and second gain profiles in the optical fiber portion. The first and second gain profiles overlap in wavelength. An optical coupler couples the pump power to the optical fiber portion. Since the gain profiles overlap, the Raman amplifier has a greater bandwidth than can be achieved with a pump operating at a single wavelength.
摘要翻译：提供了拉曼放大器，其包括光信号行进的光纤的至少一部分。光纤部分可以包括光通信系统的全部或部分光传输路径。提供了泵能量单元，其包括分别在第一和第二波长处提供泵浦功率的第一和第二泵浦源。第一和第二波长在光纤部分中产生第一和第二增益分布。第一和第二增益谱在波长上重叠。光耦合器将泵浦功率耦合到光纤部分。由于增益曲线重叠，拉曼放大器具有比在单个波长下工作的泵可实现的带宽更大的带宽。

4. 发明授权

US06188823B1 Method and apparatus for providing dispersion and dispersion slope compensation in an optical communication system 有权
标题翻译：在光通信系统中提供色散斜率补偿的方法和装置
公开(公告)号：US06188823B1
公开(公告)日：2001-02-13
申请号：US09204041
申请日：1998-12-01
申请人： Xiaobing Ma
发明人： Xiaobing Ma
IPC分类号： G02B602
CPC分类号： G02B6/29394 , H04B10/25253
摘要： An optical transmission system is provided that includes a transmitting terminal, a receiving terminal remotely located from the transmitting terminal, and an optical transmission path connecting the transmitting terminal to the receiving terminal. The optical transmission path includes at least one optical amplifier such that portions of the optical transmission path located between adjacent optical amplifiers or terminals denote a transmission span. The path includes constituent optical fiber having a positive dispersion shift, dispersion compensating optical fiber having a negative dispersion shift, and dispersion slope compensating fiber having a negative dispersion slope.
摘要翻译：提供了一种光传输系统，其包括发送终端，远离发送终端的接收终端以及将发送终端连接到接收终端的光传输路径。光传输路径包括至少一个光放大器，使得位于相邻光放大器或端子之间的光传输路径的部分表示传输跨度。该路径包括具有正色散偏移的成分光纤，具有负色散偏移的色散补偿光纤和具有负色散斜率的色散斜率补偿光纤。

5. 发明授权

US06317238B1 Chromatic dispersion management for optical wavelength division multiplexed transmission systems 失效
标题翻译：光波分复用传输系统的色散管理
公开(公告)号：US06317238B1
公开(公告)日：2001-11-13
申请号：US08883192
申请日：1997-06-26
申请人： Neal S. Bergano , Xiaobing Ma
发明人： Neal S. Bergano , Xiaobing Ma
IPC分类号： H04B1000
CPC分类号： H04B10/25253 , G02B6/02004 , G02B6/02019 , G02B6/0228 , G02B6/29377
摘要： A method and apparatus is provided for dispersion mapping that yields improved transmission performance for optical transmission systems by providing a more optimal balance between the reduction of both accumulated chromatic dispersion and nonlinear mixing. In particular, the chromatic dispersion is arranged on both a short length scale (within one amplification period) and a long length scale so that the average dispersion returns to zero. The dispersion management within one fiber span is arranged so that the magnitude of the dispersion is large in the section of the fiber span in which the optical power is large and is small in the section of the fiber span in which the optical power is small. This arrangement reduces both the amount of nonlinear mixing and the accumulated chromatic dispersion within the given fiber span.
摘要翻译：提供了一种用于色散映射的方法和装置，其通过在累积色散和非线性混合的减少之间提供更好的平衡来产生光传输系统的改进的传输性能。特别地，色散被布置在短长度尺度（一个放大周期）和长长度刻度之中，使得平均色散返回到零。在一个光纤跨度内的色散管理被布置成使得在光功率大且在光功率小的光纤跨度的部分中光纤跨度的部分中的色散的大小较大。这种布置减少了给定光纤跨度内的非线性混合量和累积色散。

6. 发明授权

US06407842B1 Method and apparatus for transmitting a WDM optical signal having nonuniform channel spacings 有权
标题翻译：用于发送具有不均匀信道间隔的WDM光信号的方法和装置
公开(公告)号：US06407842B1
公开(公告)日：2002-06-18
申请号：US09181194
申请日：1998-10-28
申请人： Xiaobing Ma
发明人： Xiaobing Ma
IPC分类号： H04B1012
CPC分类号： H04J14/0224 , H04B10/2543 , H04B10/5051 , H04B10/588
摘要： A method and apparatus is provided for transmitting an optical signal through an optical fiber. The apparatus includes an optical signal source, which generates an optical signal having a plurality of optical channels onto which data is modulated. Each of the optical channels is defined by a different carrier wavelength. A phase modulator imparts phase modulation to the plurality of optical channels so that channels nearest a zero dispersion wavelength of the optical fiber are more closely spaced to one another than channels farthest in wavelength from the zero dispersion wavelength of the optical fiber.
摘要翻译：提供了一种通过光纤传输光信号的方法和装置。该装置包括一个光信号源，它产生一个具有数据被调制的多个光通道的光信号。每个光通道由不同的载波波长限定。相位调制器向多个光通道施加相位调制，使得最靠近光纤的零色散波长的通道彼此之间的距离比距光纤的零色散波长最远的通道相互间隔得更紧密。

7. 发明授权

US06181464B2 Low noise Raman amplifier employing bidirectional pumping and an optical transmission system incorporating same 有权
标题翻译：采用双向泵浦的低噪声拉曼放大器和并入其的光传输系统
公开(公告)号：US06181464B2
公开(公告)日：2001-01-30
申请号：US09204035
申请日：1998-12-01
申请人： Howard David Kidorf , Xiaobing Ma , Morten Nissov
发明人： Howard David Kidorf , Xiaobing Ma , Morten Nissov
IPC分类号： H01S330
CPC分类号： H01S3/302 , H01S3/06754 , H01S3/094011 , H01S2301/02
摘要： A method and apparatus provides pump energy to an optical fiber located along an optical transmission path. The optical fiber imparts Raman amplification to an optical signal traveling therein when pumped at a pump wavelength. In accordance with the method, a first beam of pump energy is generated at the pump wavelength of the optical signal and a second beam of pump energy at a wavelength one Raman Stokes order below the pump wavelength. The first beam of pump energy is introduced to the optical fiber so that it contrapropagates with respect to the optical signal. The second beam of pump energy is introduced to the optical fiber so that it co-propagates with respect to the optical signal. The second beam of pump energy does not pump the signal (thus minimizing noise) but rather serves to pump the first pump beam by the production of Raman Stokes- shifted light.
摘要翻译：方法和装置向位于光传输路径的光纤提供泵浦能量。当以泵浦波长泵浦时，光纤向其中行进的光信号施加拉曼放大。根据该方法，在光信号的泵浦波长处产生第一波束能量，并且在波长为一个拉曼斯托克斯次序的泵浦波长下的第二波束泵浦能量产生。泵浦能量的第一个光束被引入到光纤中，使得它相对于光信号相反地传播。泵浦能量的第二束被引入到光纤中，使得它相对于光信号共传播。泵浦能量的第二波束不会泵浦信号（从而使噪声最小化），而是通过产生拉曼斯托克斯偏移光来泵浦第一泵浦光束。

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