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1.发明授权Optical amplification using launched signal powers selected as a function of a noise figure 有权使用发射信号功率的光放大作为噪声系数的函数公开(公告)号：US06819479B1
公开(公告)日：2004-11-16
申请号：US10028576
申请日：2001-12-20
IPC分类号： H01S300
CPC分类号： H01S3/06754 , H01S2301/02
摘要： In one embodiment, an optical amplifier includes a gain medium operable to receive a plurality of signals each having a center wavelength and a noise figure associated with at least a portion of the amplifier and varying as a function of wavelength. At least two of the plurality of signals have launch powers that are a function of a magnitude of the noise figure measured at or near the center wavelength of that signal.
摘要翻译： 在一个实施例中，光放大器包括增益介质，其可操作以接收多个信号，每个信号具有与放大器的至少一部分相关联的中心波长和噪声系数，并随波长变化。 多个信号中的至少两个具有作为在该信号的中心波长处或附近测量的噪声系数的大小的函数的发射功率。
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公开(公告)号：US07254337B1
公开(公告)日：2007-08-07
申请号：US11383686
申请日：2006-05-16
IPC分类号： H04J14/02
CPC分类号： H04J14/0291 , H04J14/0206 , H04J14/0209 , H04J14/0213 , H04J14/0279
摘要： An optical communication system includes a plurality of optical add/drop multiplexers (OADMs). The plurality of OADMs includes at least five low distortion OADMs. Each OADM is coupled between spans of a multiple span communication link and operable to receive a multiple wavelength signal. The multiple wavelength signal includes a plurality of bands of wavelength signals each separated from other bands of wavelength signals by one or more guard-channels. In one embodiment, each of the at least five low distortion OADMs adds/drops a common first band of wavelengths to/from the multiple wavelength signal. In some embodiments, a spectral distortion associated with a pass-through wavelength signal spectrally adjacent to one of the one or more guard-channels is no more than three decibels after exiting the last of the plurality of low distortion OADMs. In those embodiments, the guard-channel is adjacent to the first band of wavelengths.
摘要翻译： 光通信系统包括多个光分插复用器（OADM）。 多个OADM包括至少五个低失真OADM。 每个OADM耦合在多跨度通信链路的跨度之间并且可操作以接收多波长信号。 多波长信号包括波长信号的多个波段，每个波长信号波段由波长信号的其它波段与一个或多个保护通道分离。 在一个实施例中，至少五个低失真OADM中的每一个向多波长信号/从多波长信号添加/丢弃公共第一波长带。 在一些实施例中，与在一个或多个保护信道之一频谱相邻的通过波长信号相关联的频谱失真在离开多个低失真OADM中的最后一个之后不超过三个分贝。 在那些实施例中，保护信道与第一波长带相邻。
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公开(公告)号：US07068938B1
公开(公告)日：2006-06-27
申请号：US10100615
申请日：2002-03-15
IPC分类号： H04J14/02
CPC分类号： H04J14/0213
摘要： An optical communication system includes a plurality of optical add/drop multiplexers (OADMs). The plurality of OADMs includes at least five low distortion OADMs. Each OADM is coupled between spans of a multiple span communication link and operable to receive a multiple wavelength signal. The multiple wavelength signal includes a plurality of bands of wavelength signals each separated from other bands of wavelength signals by one or more guard-channels. In one embodiment, each of the at least five low distortion OADMs adds/drops a common first band of wavelengths to/from the multiple wavelength signal. In some embodiments, a spectral distortion associated with a pass-through wavelength signal spectrally adjacent to one of the one or more guard-channels is no more than three decibels after exiting the last of the plurality of low distortion OADMs. In those embodiments, the guard-channel is adjacent to the first band of wavelengths.
摘要翻译： 光通信系统包括多个光分插复用器（OADM）。 多个OADM包括至少五个低失真OADM。 每个OADM耦合在多跨度通信链路的跨度之间并且可操作以接收多波长信号。 多波长信号包括波长信号的多个波段，每个波长信号波段由波长信号的其它波段与一个或多个保护通道分离。 在一个实施例中，至少五个低失真OADM中的每一个向多波长信号/从多波长信号添加/丢弃公共第一波长带。 在一些实施例中，与在一个或多个保护信道之一频谱相邻的通过波长信号相关联的频谱失真在离开多个低失真OADM中的最后一个之后不超过三个分贝。 在那些实施例中，保护信道与第一波长带相邻。
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4.发明授权Raman oscillator including an intracavity filter and amplifiers utilizing same 有权拉曼振荡器包括腔内滤波器和利用其的放大器公开(公告)号：US06567430B1
公开(公告)日：2003-05-20
申请号：US09400414
申请日：1999-09-21
IPC分类号： H01S330
CPC分类号： H01S3/302 , H01S3/06791
摘要： In one embodiment, a Raman oscillator includes at least one laser cavity and a distributed gain fiber positioned in the at least one laser cavity having a single spatial mode over a pumping wavelength to a signal wavelength. The oscillator also includes a coupler adapted to be coupled to a pumping mechanism to pump the distributed gain fiber at the pumping wavelength to obtain an optical signal wherein distributed gain is provided by Raman amplification over at least one cascade order corresponding to the pumping wavelength. A filter is positioned in the at least one laser cavity and has at least one pass band with a transmission peak placed approximately at the at least one cascade order to filter the optical signal to obtain a filtered optical signal having the signal wavelength. The filter has a substantially continuous sinusoidal filter function over at least one period of the filter function.
摘要翻译： 在一个实施例中，拉曼振荡器包括至少一个激光腔和位于所述至少一个激光腔中的分布式增益光纤，所述激光腔具有在泵浦波长到信号波长的单个空间模式。 该振荡器还包括耦合到耦合到泵浦机构的耦合器以泵浦波长的分布式增益光纤获得光信号，其中分布增益通过对应于泵浦波长的至少一个级联次数的拉曼放大来提供。 滤光器被定位在至少一个激光腔中，并且具有至少一个通带，其中传输峰大致位于至少一个级联阶，以过滤光信号以获得具有信号波长的经滤波的光信号。 滤波器在滤波器功能的至少一个周期上具有基本连续的正弦滤波器功能。
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5.发明授权公开(公告)号：US06374006B1
公开(公告)日：2002-04-16
申请号：US09272451
申请日：1999-03-19
IPC分类号： G02B626
CPC分类号： H01S3/302 , H01S3/0675 , H01S3/06791 , H01S3/094003
摘要： The present invention provides a structure for Raman amplification of signals with counter-propagation of signal and pump and wavelength control while permitting broad bandwidth within each Raman order. The broadband optical amplifier of the invention combines Raman amplification with a circulator loop cavity and/or chirped Bragg gratings to achieve bandwidth performance improvements. The beneficial properties of the circulator loop cavity and/or chirped Bragg gratings can also combined with noise dampening property of the Sagnac Raman cavity.
摘要翻译： 本发明提供了一种用于拉曼放大信号的结构，该信号具有信号和泵的反传播以及波长控制，同时允许每个拉曼级内的宽带宽。 本发明的宽带光放大器将拉曼放大与循环器环腔和/或啁啾布拉格光栅组合，以实现带宽性能的改进。 循环器环形腔和/或啁啾布拉格光栅的有益特性也可以与Sagnac拉曼腔的噪声抑制特性组合。
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公开(公告)号：US06587259B2
公开(公告)日：2003-07-01
申请号：US09916454
申请日：2001-07-27
IPC分类号： H04B1000
CPC分类号： H04B10/2916 , H01S3/06754 , H01S3/094096 , H01S3/10015 , H01S3/1301 , H01S3/302 , H01S2301/02 , H04B10/2525 , H04B15/00 , H04B2210/003 , H04B2210/256
摘要： One aspect of the invention includes an optical amplifier operable to amplify a plurality of optical wavelength signals at least in part through Raman amplification. The amplifier includes an input operable to receive a plurality of wavelength signals and an output operable to communicate an amplified version of at least some of the plurality of wavelength signals. The amplifier further includes a pump assembly operable to generate one or more pump signals and a gain medium operable to receive the plurality of wavelength signals and the one or more pump signals and to facilitate amplification of at least some of the plurality of wavelength signals. The amplifier has associated with it a noise figure having a shape varying as a function of wavelength. At least one of the one or more pump signals is operable to have its power varied to selectively control the shape of the noise figure.
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公开(公告)号：US07233432B2
公开(公告)日：2007-06-19
申请号：US10232349
申请日：2002-08-30
IPC分类号： H01S3/00
CPC分类号： H04B10/2935 , H04J14/0221
摘要： In one of several embodiments, a method of communicating optical signals comprises communicating a plurality of optical signals over an optical communications medium, wherein each of at least some of the plurality of optical signals comprises a launch power that is a function of a noise property measured at or near a center wavelength of that signal. Launch powers of the plurality of optical signals primarily decrease with increasing center wavelengths of the plurality of optical signals.
摘要翻译： 在几个实施例中的一个实施例中，传送光信号的方法包括通过光通信介质传送多个光信号，其中多个光信号中的至少一些光信号中的每一个包括作为测量的噪声特性的函数的发射功率 处于或接近该信号的中心波长。 多个光信号的发射功率主要随着多个光信号的中心波长的增加而减小。
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公开(公告)号：US06943936B2
公开(公告)日：2005-09-13
申请号：US10211103
申请日：2002-08-02
CPC分类号： H01S5/4025 , H01S3/06754 , H01S3/094003 , H01S3/094096 , H01S3/09415 , H01S3/302 , H01S2301/04
摘要： A Raman amplifier includes a Raman gain fiber comprising a length of high-dispersion gain fiber and operable to receive at least one optical signal. The Raman amplifier also includes at least one pump source capable of generating at least one pump signal that co-propagates within the Raman gain fiber with at least a portion of the at least one optical signal received by the Raman gain fiber. The length of the high-dispersion gain fiber is at least ten (10) times a walk off length between the at least one pump signal and at least one wavelength of the at least one optical signal received by the Raman gain fiber. In addition, the length of high-dispersion gain fiber is at least two (2) times a walk off length between at least two optical signal wavelengths of the at least one optical signal received by the Raman gain fiber.
摘要翻译： 拉曼放大器包括拉曼增益光纤，其包括一长度的高色散增益光纤并且可操作以接收至少一个光信号。 拉曼放大器还包括至少一个泵浦源，其能够产生至少一个泵浦信号，所述至少一个泵浦信号与拉曼增益光纤内的至少一部分由拉曼增益光纤接收的至少一部分光信号共同传播。 高分散增益光纤的长度在至少一个泵浦信号与由拉曼增益光纤接收的至少一个光信号的至少一个波长之间的走向长度至少为10（10）倍。 此外，高分散增益光纤的长度在由拉曼增益光纤接收的至少一个光信号的至少两个光信号波长之间的走走长度的至少两倍。
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公开(公告)号：US06924926B2
公开(公告)日：2005-08-02
申请号：US10210987
申请日：2002-08-02
IPC分类号： H01S3/094 , H01S3/0941 , H01S5/40 , H01S3/00
CPC分类号： H01S3/09415 , H01S3/094003 , H01S3/094096 , H01S5/4012 , H01S5/4025 , H01S5/4087
摘要： A laser diode pump includes a plurality of laser diodes each capable of generating a lasing wavelength. The laser diode pump further includes at least one wavelength combiner operable to combine the plurality of lasing wavelengths generated by the plurality of laser diodes into a multiple wavelength pump signal. In one particular embodiment, at least two of the plurality of lasing wavelengths generated by the plurality of laser diodes comprise a wavelength between 1270 nm and 1350 nm.
摘要翻译： 激光二极管泵包括能够产生激光波长的多个激光二极管。 激光二极管泵还包括至少一个波长组合器，其可操作以将由多个激光二极管产生的多个激光波长组合成多波长泵浦信号。 在一个具体实施例中，由多个激光二极管产生的多个激光波长中的至少两个包括1270nm和1350nm之间的波长。
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公开(公告)号：US06532101B2
公开(公告)日：2003-03-11
申请号：US09811103
申请日：2001-03-16
IPC分类号： H01S300
CPC分类号： H04B10/2935 , H04B10/2916 , H04B2210/003
摘要： A multi-stage Raman amplifier includes a first Raman amplifier stage having a first sloped gain profile operable to amplify a plurality of signal wavelengths, and a second Raman amplifier stage having a second sloped gain profile operable to amplify at least most of the plurality of signal wavelengths after those wavelengths have been amplified by the first stage. The second sloped gain profile is approximately complementary slope to the slope of the first sloped gain profile. The combined effect of the first and second Raman stages contributes to an approximately flat overall gain profile over the plurality of signal wavelengths.
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