-
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.
-
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.
-
公开(公告)号：US07974002B2
公开(公告)日：2011-07-05
申请号：US11691012
申请日：2007-03-26
申请人： Mohammed N. Islam , Carl A. DeWilde
发明人： Mohammed N. Islam , Carl A. DeWilde
CPC分类号： H04J14/0221 , H04B10/2916 , H04B10/2935
摘要： An optical communication system is operable to communicate a plurality of wavelength signals at a bit rate of at least 9.5 gigabits per second over a multiple span communication link spanning at least 400 kilometers without optical regenerators. The plurality of wavelength signals include a bandwidth of more than 32 nanometers separated into at least 160 optical channels. The system includes a plurality of optical transmitters implementing a forward error correction (FEC) coding technique. The FEC encoded wavelength signals comprise a bit error rate of 10−09 or better after FEC decoding. The system also includes at least five (5) optical add/drop multiplexers (OADMs), each coupled to one or more spans of the multiple span communication link. The system further includes a plurality of amplifiers each coupled to one or more spans of the communication link, at least a majority of the amplifiers comprise a distributed Raman amplification stage.
摘要翻译： 光通信系统可操作以通过跨越至少400公里的多跨度通信链路在不具有光学再生器的情况下以至少9.5千兆比特每秒的比特率来传送多个波长信号。 多个波长信号包括分离成至少160个光学通道的超过32纳米的带宽。 该系统包括实现前向纠错（FEC）编码技术的多个光发射机。 FEC编码的波长信号在FEC解码之后包括10-09或更好的误比特率。 该系统还包括至少五（5）个光分插复用器（OADM），每个耦合到多跨度通信链路的一个或多个跨度。 该系统还包括多个放大器，每个放大器耦合到通信链路的一个或多个跨度，至少大部分放大器包括分布式拉曼放大级。
-
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。
-
公开(公告)号：US06744553B1
公开(公告)日：2004-06-01
申请号：US09885678
申请日：2001-06-20
申请人： Mohammed N. Islam , Ozdal Boyraz , Carl A. Dewilde
发明人： Mohammed N. Islam , Ozdal Boyraz , Carl A. Dewilde
IPC分类号： G02F135
CPC分类号： G02F1/39 , G02F1/3536
摘要： In one aspect of the invention, an apparatus operable to convert wavelengths of a plurality of optical signals includes a coupler operable to receive a pump signal and a plurality of input signals each input signal comprising at least one wavelength different than the wavelengths of others of the plurality of input optical signals. The apparatus further includes an optical medium operable to receive the pump signal and the plurality of input signals from the couplet, wherein the pump signal and each of the plurality of input signals are synchronized to overlap at least partially during at least a part of the time spent traversing the optical medium to facilitate generation of a plurality of converted wavelength signals each comprising a wavelength that is different than the wavelengths of at least some of the plurality of input signals. Various embodiments can result in low cross-talk and/or low polarization sensitivity.
摘要翻译： 在本发明的一个方面，可操作以转换多个光信号的波长的装置包括可操作以接收泵浦信号和多个输入信号的耦合器，每个输入信号包括至少一个波长不同于 多个输入光信号。 所述装置还包括光学介质，其可操作以从所述对联接收所述泵浦信号和所述多个输入信号，其中所述泵浦信号和所述多个输入信号中的每一个被同步至少部分地在所述时间的至少一部分期间重叠 经过光学介质以便于产生多个转换的波长信号，每个波长信号包括不同于多个输入信号中的至少一些的波长的波长。 各种实施例可导致低串扰和/或低偏振灵敏度。
-
公开(公告)号：US07197245B1
公开(公告)日：2007-03-27
申请号：US10100591
申请日：2002-03-15
申请人： Mohammed N. Islam , Carl A. DeWilde
发明人： Mohammed N. Islam , Carl A. DeWilde
CPC分类号： H04J14/0221 , H04B10/2916 , H04B10/2935
摘要： An optical communication system is operable to communicate a plurality of wavelength signals at a bit rate of at least 9.5 gigabits per second over a multiple span communication link spanning at least 400 kilometers without optical regenerators. The plurality of wavelength signals include a bandwidth of more than 32 nanometers separated into at least 160 optical channels. The system includes a plurality of optical transmitters implementing a forward error correction (FEC) coding technique. The FEC encoded wavelength signals comprise a bit error rate of 10−09 or better after FEC decoding. The system also includes at least five (5) optical add/drop multiplexers (OADMs), each coupled to one or more spans of the multiple span communication link. The system further includes a plurality of amplifiers each coupled to one or more spans of the communication link, at least a majority of the amplifiers comprise a distributed Raman amplification stage.
摘要翻译： 光通信系统可操作以通过跨越至少400公里的多跨度通信链路在不具有光学再生器的情况下以至少9.5千兆比特每秒的比特率来传送多个波长信号。 多个波长信号包括分离成至少160个光学通道的超过32纳米的带宽。 该系统包括实现前向纠错（FEC）编码技术的多个光发射机。 在FEC解码之后，FEC编码的波长信号包括10dB或更好的误码率。 该系统还包括至少五（5）个光分插复用器（OADM），每个耦合到多跨度通信链路的一个或多个跨度。 该系统还包括多个放大器，每个放大器耦合到通信链路的一个或多个跨度，至少大部分放大器包括分布式拉曼放大级。
-
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。
-
公开(公告)号：US06646788B2
公开(公告)日：2003-11-11
申请号：US10289198
申请日：2002-11-05
申请人： Mohammed N. Islam , Carl A. Dewilde
发明人： Mohammed N. Islam , Carl A. Dewilde
IPC分类号： H01S330
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.
摘要翻译： 多级拉曼放大器包括具有可操作以放大多个信号波长的第一倾斜增益分布的第一拉曼放大器级和具有第二倾斜增益分布的第二拉曼放大器级，该第二拉曼放大器级可用于放大多个信号中的至少大部分 这些波长的波长在第一阶段被放大。 第二倾斜增益曲线是与第一倾斜增益分布的斜率近似互补的斜率。 第一和第二拉曼级的组合效应有助于在多个信号波长上的大致平坦的总增益分布。
-
9.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。
-
10.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。
-
-
-
-
-
-
-
-
-
搜索结果
116 条记录 (耗时 0.035 秒)
