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公开(公告)号：US06825973B1
公开(公告)日：2004-11-30
申请号：US10100617
申请日：2002-03-15
申请人： Andrej B. Puc , Michel W. Chbat , Jason D. Henrie , Sergey P. Burtsev , Frederic L. Barthelemy , Ned A. Weaver
发明人： Andrej B. Puc , Michel W. Chbat , Jason D. Henrie , Sergey P. Burtsev , Frederic L. Barthelemy , Ned A. Weaver
IPC分类号： H01S300
CPC分类号： H04B10/291 , H04B10/2525
摘要： An optical amplifier includes at least one amplification stage having a saturation recovery time of less than one (1) millisecond. The amplification stage includes a gain medium operable to receive at least one pump signal and to receive from a multiple span communication link an optical signal comprising a leading edge. The at least one pump signal and the optical signal travel in the same direction at approximately the same speed through at least a portion of the gain medium. In one particular embodiment the leading edge of the optical signal after passing through a plurality of amplifiers when received by a receiver coupled to the communication link comprises a peak power that is no more than ten times the average power of the optical signal at the receiver.
摘要翻译： 光放大器包括至少一个具有小于一（1）毫秒的饱和恢复时间的放大级。 放大级包括增益介质，其可操作以接收至少一个泵浦信号并且从多跨距通信链路接收包括前沿的光信号。 至少一个泵浦信号和光信号通过至少一部分增益介质以大致相同的速度在相同的方向上行进。 在一个特定实施例中，当由耦合到通信链路的接收器接收到之后，在通过多个放大器之后，光信号的前沿包括不超过接收机处的光信号的平均功率的10倍的峰值功率。
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2.发明授权System and method for implementing a high capacity unrepeatered optical communication system 有权实现高容量无中继光通信系统的系统和方法公开(公告)号：US07665909B2
公开(公告)日：2010-02-23
申请号：US12032220
申请日：2008-02-15
IPC分类号： G02B6/36
CPC分类号： H04J14/0221 , H01S3/06758 , H01S3/094011 , H01S3/302 , H01S2301/04 , H04B10/2916 , H04B10/2937
摘要： A method of communicating an optical signal includes generating an optical signal at a bit rate of at least 2.5 Gb/s. The optical signal including at least thirty optical channels. In one particular embodiment, at least some of the thirty optical channels reside within a 1567-1620 nanometer wavelength range. The method also includes receiving the optical signal at a ROPA that includes a rare-earth doped optical fiber. In addition, the method includes introducing a pump signal to a communication span of the unrepeatered optical communication system. The pump signal operable to amplify the optical signal by Raman amplification within the communication span and including at least one pump signal wavelength operable to excite the rare-earth doped fiber. The method further includes receiving the optical signal after the optical signal has traversed at least 200 kilometers of the communication span.
摘要翻译： 传送光信号的方法包括以至少2.5Gb / s的比特率生成光信号。 光信号包括至少三十个光通道。 在一个具体实施例中，三十个光通道中的至少一些位于1567-1620纳米波长范围内。 该方法还包括在包括稀土掺杂光纤的ROPA处接收光信号。 此外，该方法包括将泵浦信号引入到无中继光通信系统的通信跨度。 泵浦信号可操作以在通信范围内通过拉曼放大来放大光信号，并且包括可操作以激励稀土掺杂光纤的至少一个泵浦信号波长。 该方法还包括在光信号经过至少200公里的通信跨度之后接收光信号。
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3.发明申请公开(公告)号：US20080145055A1
公开(公告)日：2008-06-19
申请号：US12032220
申请日：2008-02-15
IPC分类号： H04J14/02
CPC分类号： H04J14/0221 , H01S3/06758 , H01S3/094011 , H01S3/302 , H01S2301/04 , H04B10/2916 , H04B10/2937
摘要： A method of communicating an optical signal includes generating an optical signal at a bit rate of at least 2.5 Gb/s. The optical signal including at least thirty optical channels. In one particular embodiment, at least some of the thirty optical channels reside within a 1567-1620 nanometer wavelength range. The method also includes receiving the optical signal at a ROPA that includes a rare-earth doped optical fiber. In addition, the method includes introducing a pump signal to a communication span of the unrepeatered optical communication system. The pump signal operable to amplify the optical signal by Raman amplification within the communication span and including at least one pump signal wavelength operable to excite the rare-earth doped fiber. The method further includes receiving the optical signal after the optical signal has traversed at least 200 kilometers of the communication span.
摘要翻译： 传送光信号的方法包括以至少2.5Gb / s的比特率生成光信号。 光信号包括至少三十个光通道。 在一个具体实施例中，三十个光通道中的至少一些位于1567-1620纳米波长范围内。 该方法还包括在包括稀土掺杂光纤的ROPA处接收光信号。 此外，该方法包括将泵浦信号引入到无中继光通信系统的通信跨度。 泵浦信号可操作以在通信范围内通过拉曼放大来放大光信号，并且包括可操作以激励稀土掺杂光纤的至少一个泵浦信号波长。 该方法还包括在光信号经过至少200公里的通信跨度之后接收光信号。
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4.发明授权System and method for implementing a high capacity unrepeatered optical communication system 有权实现高容量无中继光通信系统的系统和方法公开(公告)号：US07336869B2
公开(公告)日：2008-02-26
申请号：US11279825
申请日：2006-04-14
IPC分类号： G02B6/28
CPC分类号： H04J14/0221 , H01S3/06758 , H01S3/094011 , H01S3/302 , H01S2301/04 , H04B10/2916 , H04B10/2937
摘要： A method of communicating an optical signal includes generating an optical signal at a bit rate of at least 2.5 Gb/s. The optical signal including at least thirty optical channels. In one particular embodiment, at least some of the thirty optical channels reside within a 1567-1620 nanometer wavelength range. The method also includes receiving the optical signal at a ROPA that includes a rare-earth doped optical fiber. In addition, the method includes introducing a pump signal to a communication span of the unrepeatered optical communication system. The pump signal operable to amplify the optical signal by Raman amplification within the communication span and including at least one pump signal wavelength operable to excite the rare-earth doped fiber. The method further includes receiving the optical signal after the optical signal has traversed at least 200 kilometers of the communication span.
摘要翻译： 传送光信号的方法包括以至少2.5Gb / s的比特率生成光信号。 光信号包括至少三十个光通道。 在一个具体实施例中，三十个光通道中的至少一些位于1567-1620纳米波长范围内。 该方法还包括在包括稀土掺杂光纤的ROPA处接收光信号。 此外，该方法包括将泵浦信号引入到无中继光通信系统的通信跨度。 泵浦信号可操作以在通信范围内通过拉曼放大来放大光信号，并且包括可操作以激励稀土掺杂光纤的至少一个泵浦信号波长。 该方法还包括在光信号经过至少200公里的通信跨度之后接收光信号。
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公开(公告)号：US06810214B2
公开(公告)日：2004-10-26
申请号：US09811067
申请日：2001-03-16
IPC分类号： H04B1000
CPC分类号： H04B10/2941 , H04B10/2537
摘要： In one aspect of the invention, a system operable to reduce degradation of an optical signal to noise ratio where signals having multiple wavelengths are communicated over a common optical link includes an amplifier assembly operable to introduce to a lower communication band a first gain and to introduce to a higher communication band a second gain that is different from the first gain. In addition, the system is operable to introduce a variable gain tilt into at least one of the communication bands. The different gains introduced to the higher and lower bands and the variable gain tilt introduced into at least one of the bands result in a reduction of a degradation of optical signal to noise ratio that could otherwise be caused by wavelength dependent attenuation when the communication bands are combined and communicated over an optical link.
摘要翻译： 在本发明的一个方面，一种可操作以减少光信噪比的劣化的系统，其中具有多个波长的信号通过公共光链路进行通信，该放大器组件可操作以向较低通信频带引入第一增益并引入 向较高通信频带提供不同于第一增益的第二增益。 此外，该系统可操作地将可变增益倾斜引入到至少一个通信频带中。 引入到较高和较低频带的不同增益和引入至少一个频带中的可变增益倾斜导致光信噪比的降低，否则当通信频带为 通过光链路组合和传送。
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公开(公告)号：US07340185B1
公开(公告)日：2008-03-04
申请号：US10127741
申请日：2002-04-22
IPC分类号： H04B10/06
CPC分类号： H04B10/695
摘要： An optical receiver including a plurality of time delay elements and threshold decision elements configured to receive a signal representative of an optical signal. Each of the time delay elements is configured to impart an associated time delay to the signal. Each of the threshold decision elements is configured to compare the signal to a plurality of threshold levels. Each decision element outputs a signal indicative of a probability that a particular pulse of the received signal is a binary one at its associated sampling time. An optical communication system and a method of detecting a received data signal in an optical communication system are also provided.
摘要翻译： 一种光接收机，包括多个时间延迟元件和被配置为接收表示光信号的信号的阈值判定元件。 每个时间延迟元件被配置为给信号赋予相关的时间延迟。 每个阈值判定元件被配置为将信号与多个阈值电平进行比较。 每个决策单元输出指示接收信号的特定脉冲在其相关采样时间是二进制的信号的信号。 还提供了光通信系统和在光通信系统中检测接收数据信号的方法。
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公开(公告)号：US07869673B2
公开(公告)日：2011-01-11
申请号：US12202100
申请日：2008-08-29
申请人： Do-Il Chang , Andrej B. Puc
发明人： Do-Il Chang , Andrej B. Puc
CPC分类号： H04B10/2543 , G02B6/02019 , H04B10/2916
摘要： Embodiments described herein relate to an optical fiber stretch that may experience forward Raman amplification in which the peak optical signal power occurs at some distance from the transmitter. Smaller effective area optical fiber is used at a portion of the optical fiber stretch in which the optical signal power is increasing, while larger effective area optical fiber is used at a more remote stretch of the optical fiber stretch that experiences the peak optical signal power. Thus, the quality of the signal is better preserved since the larger effective area fiber reduces maximum optical signal density thereby reducing non-linear degradations on signal quality.
摘要翻译： 本文所描述的实施例涉及可以经历向前拉曼放大的光纤拉伸，其中峰值光信号功率在距发射机一定距离处发生。 在光信号功率增加的部分光纤拉伸中使用较小的有效面积的光纤，而在经受峰值光信号功率的光纤拉伸的更远的拉伸处使用更大的有效面积的光纤。 因此，由于较大的有效面积的光纤降低了最大的光信号密度，从而降低信号质量的非线性劣化，从而更好地保持信号的质量。
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公开(公告)号：US20100103957A1
公开(公告)日：2010-04-29
申请号：US12508416
申请日：2009-07-23
IPC分类号： H01S3/30
摘要： An optical communication system includes a gain medium that receives optical signal(s) of one or more optical signal wavelengths. The system also includes pump source(s) that are capable of generating at least a first pump signal and a second pump signal. The first pump signal includes at least one integer Raman order wavelength that includes a Raman gain peak that is one stokes shift away from at least one of the one or more optical signal wavelengths. The second pump signal includes at least one fractional Raman order pump wavelength that includes a Raman gain peak that is a non-integer multiple of a stokes shift from each of the one or more optical signal wavelengths. Optionally, there might be one or more other pump signals that do not satisfy the criteria specified for the first pump signal or the second pump signal.
摘要翻译： 光通信系统包括接收一个或多个光信号波长的光信号的增益介质。 该系统还包括能够产生至少第一泵信号和第二泵信号的泵浦源。 第一泵浦信号包括至少一个整数拉曼阶波长，其包括远离一个或多个光信号波长中的至少一个的一个斯托克斯偏移的拉曼增益峰值。 第二泵浦信号包括至少一个分数拉曼级泵浦波长，其包括拉曼增益峰值，拉曼增益峰值是来自一个或多个光信号波长中的每一个的斯托克斯偏移的非整数倍。 可选地，可能存在不满足为第一泵浦信号或第二泵浦信号指定的标准的一个或多个其它泵浦信号。
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9.发明授权System and method for fractional Raman order pumping in optical communication systems 有权光通信系统中分数拉曼级抽运的系统和方法公开(公告)号：US07567593B2
公开(公告)日：2009-07-28
申请号：US11173629
申请日：2005-06-30
IPC分类号： H01S3/30
CPC分类号： H01S3/302 , H01S3/06758 , H01S3/094011 , H01S3/094096 , H01S3/10007 , H01S2301/04 , H04B10/2916
摘要： An optical communication system includes a gain medium that is capable of receiving at least one optical signal that includes one or more optical signal wavelengths. The system also includes one or more pump sources that are capable of generating at least one pump signal for introduction to the gain medium. The pump signal includes one or more fractional Raman order pump wavelengths having a Raman gain peak that is a non-integer multiple of one stokes shift from each of the one or more optical signal wavelengths. In one particular embodiment, the pump signal interacts with the optical signal as the pump signal traverses at least a portion of the gain medium.
摘要翻译： 光通信系统包括能够接收包括一个或多个光信号波长的至少一个光信号的增益介质。 该系统还包括能够产生用于引入增益介质的至少一个泵浦信号的一个或多个泵浦源。 泵浦信号包括具有拉曼增益峰值的一个或多个分数拉曼阶泵浦波长，该拉曼增益峰值是来自一个或多个光信号波长中的每一个的一个斯托克斯偏移的非整数倍。 在一个特定实施例中，当泵浦信号穿过增益介质的至少一部分时，泵浦信号与光信号相互作用。
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10.发明授权公开(公告)号：US07742223B2
公开(公告)日：2010-06-22
申请号：US11277332
申请日：2006-03-23
申请人： Andrej B. Puc , Do Il Chang , Andrzej S. Kaminski
发明人： Andrej B. Puc , Do Il Chang , Andrzej S. Kaminski
CPC分类号： H04B10/2937 , H01S3/06754 , H01S3/10007 , H01S3/302 , H01S2301/04 , H04J14/0221
摘要： An optical communication system includes a transmission fiber that is operable to receive at least one optical signal and at least one pump signal. The optical signal includes one or more optical signal wavelengths and a power level at approximately a minimum threshold power level. The pump signal co-propagates with at least a portion of the optical signal over at least a portion of the transmission fiber. In one particular embodiment, the pump signal operates to amplify the optical signal to approximately a maximum threshold power level as the pump signal and the optical signal traverse the portion of the transmission fiber.
摘要翻译： 光通信系统包括可操作以接收至少一个光信号和至少一个泵信号的传输光纤。 光信号包括一个或多个光信号波长和大约最小阈值功率电平的功率电平。 泵浦信号与至少一部分光信号在传输光纤的至少一部分上共同传播。 在一个特定实施例中，当泵浦信号和光信号穿过传输光纤的一部分时，泵浦信号用于将光信号放大到大致最大阈值功率电平。
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