公开(公告)号：US5260823A

公开(公告)日：1993-11-09

申请号：US10478

申请日：1993-01-28

申请人： David N. Payne ,  Richard I. Laming ,  Paul R. Morkel ,  Masao Tachibana

发明人： David N. Payne ,  Richard I. Laming ,  Paul R. Morkel ,  Masao Tachibana

IPC分类号： H01S3/063 ,  H01S3/067 ,  H01S3/10 ,  H04B10/17 ,  H01S3/06 ,  G02B6/26

CPC分类号： H04B10/2941 ,  H01S3/10023 ,  H01S2301/04 ,  H01S3/0632 ,  H01S3/0635 ,  H01S3/0675

摘要： The spectral-gain characteristics of an erbium-doped fibre amplifier have been tailored by incorporating a gain-shaping-filter within the amplifier. The filter is chosen to modify the natural gain spectrum of the amplifier so as to suppress the gain peak and thus flatten the overall spectral-gain profile. Because the amplifier is distributed, it is possible to insert one or more filters along the length of the fibre. It is shown that there are considerable advantages to locating the filter within the length of the amplifier, rather than at the end, which is the more obvious choice. Advantages are that the amplifier pump efficiency is almost unaffected and the output saturation power is similar to that of the unshaped amplifier. In addition, the flat spectral gain provides an amplifier ideally-suited for use at a number of signal wavelengths, as required for wavelength-division multiplexing (WDM). The invention therefore comprises both the concept of filtering to shape the gain response of the amplifier and the recognition that this can be achieved without penalty by careful location of one or more filters along the length of the amplifier.

摘要翻译： 掺铒光纤放大器的光谱增益特性已经通过在放大器内并入增益整形滤波器而被定制。 选择滤波器来修改放大器的自然增益谱，以抑制增益峰值，从而使整个频谱增益曲线变平。 因为放大器是分布式的，所以可以沿着光纤的长度插入一个或多个滤波器。 已经表明，将滤波器放置在放大器的长度内而不是结束处具有相当大的优点，这是更明显的选择。 优点是放大器泵效率几乎不受影响，输出饱和功率类似于未放大的放大器。 另外，平坦频谱增益提供了理想地适用于波分复用（WDM）所需的多个信号波长的放大器。 因此，本发明包括滤波以形成放大器的增益响应的概念以及通过沿放大器的长度仔细定位一个或多个滤波器可以实现这一点的识别。

公开(公告)号：US09634788B2

公开(公告)日：2017-04-25

申请号：US12875672

申请日：2010-09-03

申请人： Paul R. Morkel ,  David F. Welch

发明人： Paul R. Morkel ,  David F. Welch

IPC分类号： H04B10/00 ,  H04J14/02 ,  H04B10/291

CPC分类号： H04J14/0221 ,  H04B10/2916

摘要： Consistent with the present disclosure, an optical communication system is provided in which client data is input to a first node and output from a second node, spaced from the first node, with little delay. In one example, the delay is reduced by including higher order Raman amplifiers that provide a substantially uniform gain along the length of a fiber optic link, thereby reducing the number of EDFAs that may otherwise be installed along the optical fiber link or eliminating such EDFAs entirely. In another example, FEC encoding and decoding are not employed, thereby reducing the delay even further.

公开(公告)号：US5576883A

公开(公告)日：1996-11-19

申请号：US372150

申请日：1995-01-13

申请人： Paul R. Morkel ,  Stephen R. Desbruslais ,  Nigel H. Taylor

发明人： Paul R. Morkel ,  Stephen R. Desbruslais ,  Nigel H. Taylor

IPC分类号： G02B6/02 ,  G02B6/10 ,  G02B6/28 ,  G02B6/34 ,  G02B5/30

CPC分类号： G02B6/2773 ,  G02B6/02 ,  G02B6/105 ,  G02B6/2733 ,  G02B6/274 ,  G02B6/2843 ,  G02B6/2861 ,  G02B6/4215

摘要： A spectral polarization separator (SPS) designed to separate two wavelength-separated signals applied to the SPS with the same state of polarisation (SOP) into signals with orthogonal SOP's comprises two or more birefringent fibre elements optically in series. The differential delays and relative orientations of these elements are chosen so that polarisation separation is effected without introducing any polarisation mode dispersion (PMD). This contrasts with a prior art single birefringent element SPS whose operation necessarily does introduce PMD. A particular application for the SPS is in a dual wavelength transmitter designed for overcoming polarization hole-burning effects in a long-haul optically amplified transmission system.

摘要翻译： 设计用于将以相同偏振状态（SOP）施加到SPS的两个波长分离信号分离为具有正交SOP的信号的光谱偏振分离器（SPS）包括两个或更多个双折射光纤元件。 选择这些元件的差分延迟和相对取向，使得在不引入任何偏振模色散（PMD）的情况下实现极化分离。 这与现有技术的单一双折射元件SPS不同，其操作必然会引入PMD。 SPS的特定应用是设计用于克服长距离光放大传输系统中的极化孔燃烧效应的双波长发射器。

公开(公告)号：US20120057873A1

公开(公告)日：2012-03-08

申请号：US12875672

申请日：2010-09-03

申请人： PAUL R. MORKEL ,  David F. Welch

发明人： PAUL R. MORKEL ,  David F. Welch

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04B10/2916

摘要： Consistent with the present disclosure, an optical communication system is provided in which client data is input to a first node and output from a second node, spaced from the first node, with little delay. In one example, the delay is reduced by including higher order Raman amplifiers that provide a substantially uniform gain along the length of a fiber optic link, thereby reducing the number of EDFAs that may otherwise be installed along the optical fiber link or eliminating such EDFAs entirely. In another example, FEC encoding and decoding are not employed, thereby reducing the delay even further.

摘要翻译： 与本公开一致，提供了一种光通信系统，其中客户端数据被输入到第一节点并且从与第一节点间隔开的第二节点输出几乎没有延迟。 在一个示例中，通过包括沿着光纤链路的长度提供基本上均匀的增益的较高阶拉曼放大器来减小延迟，由此减少否则可以沿着光纤链路安装的EDFA的数量或完全消除这样的EDFA 。 在另一示例中，不使用FEC编码和解码，从而进一步减少延迟。

公开(公告)号：US06476953B1

公开(公告)日：2002-11-05

申请号：US09377017

申请日：1999-08-18

申请人： Paul R. Morkel

发明人： Paul R. Morkel

IPC分类号： H04B1002

CPC分类号： H04B10/29

摘要： An optical system includes a number of substantially identical, tunable, wavelength-preserving, optical regenerators 10. Each of the regenerators 10 is tuned to a different wavelength so that when a regenerator 10 is tuned to a given wavelength that regenerator will generate a regenerated, reshaped and retimed optical signal at the same given wavelength. The system also includes a multiplexer 32 coupled to receive and combine regenerated optical signal from each of regenerators. A filtering system (34) is provided, either internal or external to regenerators 10, to demultiplex different wavelength signals from an aggregate WDM optical signal.

摘要翻译： 光学系统包括许多基本相同的，可调谐的波长保持的光学再生器10.每个再生器10被调谐到不同的波长，使得当再生器10被调谐到给定波长时，再生器将产生再生的， 在相同的给定波长下重新整形和重新定标的光信号。 该系统还包括多路复用器32，其被耦合以接收并组合来自每个再生器的再生光信号。 在再生器10内部或外部提供滤波系统（34），以从聚合WDM光信号中解复用不同的波长信号。

公开(公告)号：US5410624A

公开(公告)日：1995-04-25

申请号：US265689

申请日：1994-06-24

申请人： Paul R. Morkel

发明人： Paul R. Morkel

IPC分类号： H04B10/2563 ,  H04J1/12 ,  H04J14/02 ,  H01S3/30

CPC分类号： H04B10/2563 ,  H04J1/12 ,  H04J14/0224

摘要： An arrangement for reducing the effects of four-wave-mixing in an optically amplified WDM optical fiber communication system employing dissimilar wavelength channel spacing, comprising means for effecting spectral regeneration of the optical signals at intervals along the system transmission medium.

摘要翻译： 一种用于减少采用不同波长信道间隔的光放大WDM光纤通信系统中四波混频效应的装置，包括用于沿着系统传输介质间隔地进行光信号的频谱再生的装置。

公开(公告)号：US5084881A

公开(公告)日：1992-01-28

申请号：US582948

申请日：1990-10-11

申请人： Mark C. Farries ,  Paul R. Morkel ,  Janet E. Townsend

发明人： Mark C. Farries ,  Paul R. Morkel ,  Janet E. Townsend

IPC分类号： H01S3/07 ,  C03C4/00 ,  C03C13/04 ,  H01S3/06 ,  H01S3/067 ,  H01S3/16 ,  H01S3/17

CPC分类号： H01S3/17 ,  C03C13/045 ,  C03C4/0071 ,  H01S3/06716 ,  H01S3/1615

摘要： A laser is characterized by a glass gain medium which contains trivalent samarium Sm.sup.3+ ions and which, when optically pumped on one or a number of absorption bands to achieve excitation at or above the metastable .sup.4 G.sub.5/2 level, radiates light at a wavelength substantially corresponding to transitions from the .sup.4 G.sub.5/2 level of samarium.

摘要翻译： PCT No.PCT / GB89 / 00375 Sec。 371 1990年10月11日第 102（e）日期1990年10月11日PCT提交1989年4月12日PCT公布。 WO89 / 10019 PCT出版物 日期为1989年10月19日。激光的特征在于含有三价钐Sm3 +离子的玻璃增益介质，并且当在一个或多个吸收带上光泵浦以实现亚稳态4G5 / 2水平以上的激发时，辐射 基本对应于从4G5 / 2级钐转变的波长的光。