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1. 发明专利

AU2002252607A1 Multiwavelength raman amplifier pump system 未知
公开(公告)号：AU2002252607A1
公开(公告)日：2002-10-28
申请号：AU2002252607
申请日：2002-04-09
申请人： DORSAL NETWORKS INC
发明人： SHIEH WILLIAM , PETRICEVIC VLADIMIR , WANG QUAN-ZHEN
IPC分类号： H01S3/067 , H01S3/094 , H01S3/23 , H01S3/30 , H04B10/12

2. 发明申请

US20030185562A1 Split redundant trunk architecture using passive splitters and path switching 有权
公开(公告)号：US20030185562A1
公开(公告)日：2003-10-02
申请号：US10397185
申请日：2003-03-27
申请人： Dorsal Networks, Inc.
发明人： Lee Daniel Feinberg , Bo Pedersen , Ronald Dale Esman , John Hagopian , Cathal Mahon , Brent Ashley Miller , M. Imran Hayee , Ronald E. Johnson , Nandakumar Ramanujam
IPC分类号： G02F001/00
CPC分类号： H04J14/029 , H04B10/032 , H04J14/0279 , H04J14/0283 , H04Q11/0062 , H04Q2011/0081
摘要： A collapsed ring fiber optic system includes a service path and a protection path provides at a shallow water portion of the fiber optic system, to deal with any fiber cuts that may occur at the shallow water portion without loss of main trunk bandwidth. The service and protection paths meet at a branch point, which is preferably located at a deep water portion of the fiber optic system. A passive combiner or a 1null2 switch is provided at the branch unit, along with a detector and a processor, to determine whether any signals are being received from the service path, and if not, to reconfigure the system to accept signals from the protection path. At another shallow water portion of the fiber optic system, nearby where a destination is located, the signal provided on the optical path over the deep water portion is split into a service path and a protection path, to provide redundancy to deal with any fiber cuts that may occur. The fiber optic system may also be utilized for a land-based system, having high probability of fiber cut regions and low probability of fiber cut regions.

3. 发明专利

DE60321562D1 未知
公开(公告)号：DE60321562D1
公开(公告)日：2008-07-24
申请号：DE60321562
申请日：2003-04-17
申请人： DORSAL NETWORKS INC
发明人： MOONEY GREG , YANG GUANGNING
IPC分类号： H04B10/06 , H03K5/08 , H04B10/158
摘要： A system compensates for the presence of power transients. The system receives a data signal and detects the occurrence of a power transient. The system generates a threshold signal based on the detected power transient and determines a value of the data signal based on the threshold signal.

4. 发明专利

AU2002303414A1 Dynamic range and redundant pump wavelenght combining for raman optical amplifier 未知
公开(公告)号：AU2002303414A1
公开(公告)日：2002-11-05
申请号：AU2002303414
申请日：2002-04-19
申请人： DORSAL NETWORKS INC
发明人： PEDERSEN BO , SHIEH WILLIAM , CLARK THOMAS , PETRICEVIC VLADIMIR
IPC分类号： G02B6/34 , H01S3/094 , H01S3/30 , H04B10/17 , H01S3/091

5. 发明申请

US20040042064A1 Pump assembly employing coupled radiation sources for multiple fibers 有权
标题翻译：泵组件采用多个纤维的耦合辐射源
公开(公告)号：US20040042064A1
公开(公告)日：2004-03-04
申请号：US10650947
申请日：2003-08-29
申请人： Dorsal Networks, Inc.
发明人： William Shieh , Vladimir Petricevic , Thomas Clark
IPC分类号： H01S003/00
CPC分类号： H04B10/2918 , H01S3/094003 , H01S3/2383 , H04B10/2916
摘要： An optical amplifier is described that can couple to and amplify optical signals along multiple fiber transmission paths. The optical amplifier includes a plurality of pump radiation sources, each pump radiation source adapted to produce radiation having a set of pump wavelengths and pump powers corresponding to the respective pump wavelengths, wherein at least one set is different from at least one other set. The optical amplifier also includes a plurality of pump radiation combiners, each pump radiation combiner coupling the radiation of a respective set of pump wavelengths of a respective source of the plurality of pump radiation sources and outputting the respective coupled radiation having coupled radiation profiles via a respective pump radiation combiner output. The optical amplifier also includes a coupler, such as a PxV coupler with P inputs and V outputs. The coupler is optically coupled to the outputs of the pump radiation combiners, receives the coupled radiation from the pump radiation combiners and outputs V pump radiation profiles to respective of V coupler outputs. The optical amplifier also includes V pump-signal combiners, each optically coupled to a respective coupler output of the V coupler outputs, which are adapted to couple an optical signal with the respective pump radiation profiles. In certain configurations, the optical amplifier may provide high pump source redundancy, increase gain profile flatness, and/or reduce the number of lasers per fiber.
摘要翻译：描述了一种可以沿多个光纤传输路径耦合和放大光信号的光放大器。光放大器包括多个泵浦辐射源，每个泵浦辐射源适于产生具有一组泵浦波长和对应于相应泵波长的泵浦功率的辐射，其中至少一组与至少一个其它组不同。光学放大器还包括多个泵浦辐射组合器，每个泵浦辐射组合器将多个泵浦辐射源的相应源的相应组的泵浦波长的辐射耦合，并通过相应的泵浦辐射组合器输出。光放大器还包括耦合器，例如具有P输入和V输出的PxV耦合器。耦合器光学耦合到泵浦辐射组合器的输出，接收来自泵辐射组合器的耦合的辐射，并将V泵辐射分布输出到V个耦合器输出的相应部分。光放大器还包括V泵浦信号组合器，每个光泵浦信号组合器光耦合到V耦合器输出的相应耦合器输出端，这些耦合器输出适于将光信号与相应的泵辐射分布耦合。在某些配置中，光放大器可以提供高泵浦源冗余度，增加增益曲线平坦度，和/或减少每个光纤的激光器数量。

6. 发明申请

US20030053728A1 Optical transmission system employing auto-synchronized chirped return-to-zero transmitter 有权
标题翻译：采用自动同步啁啾归零变送器的光传输系统
公开(公告)号：US20030053728A1
公开(公告)日：2003-03-20
申请号：US09953566
申请日：2001-09-17
申请人： Dorsal Networks, Inc.
发明人： Guangning Yang
IPC分类号： G02F001/035 , G02F001/01
CPC分类号： G02F1/2255 , G02F1/0123 , G02F2201/12
摘要： A method of modulating an optical signal is provided comprising the steps of providing a first electric field in a first optical signal path, providing a second electric field in a second optical signal path, transmitting an optical signal along the first optical signal path and the second optical signal path, amplitude modulating the optical signal via the first electric field and the second electric field, and phase modulating the optical signal via the first electric field and the second electric field. A clock source and a data source are ANDed to provide a data modulated RF signal on an offset waveguide electrode for generating the first and second electric fields. The magnitude of the electric field of the first electric field in the first optical signal path is greater than the magnitude of the electric field of the second electric field in the second optical signal path.
摘要翻译：提供一种调制光信号的方法，包括以下步骤：在第一光信号路径中提供第一电场，在第二光信号路径中提供第二电场，沿着第一光信号路径发射光信号，光信号路径，经由第一电场和第二电场对光信号进行幅度调制，以及经由第一电场和第二电场对光信号进行相位调制。时钟源和数据源被AND进行，以在偏移波导电极上提供数据调制RF信号，以产生第一和第二电场。第一光信号路径中的第一电场的电场的大小大于第二光信号路径中的第二电场的电场的大小。

7. 发明专利

AU2002252194B2 Method and system for dispersion maps and enhanced distributed gain effect in long haul telecommunications 未知
公开(公告)号：AU2002252194B2
公开(公告)日：2006-05-25
申请号：AU2002252194
申请日：2002-03-15
申请人： DORSAL NETWORKS INC
发明人： RAMANUJAM NANDAKUMAR , DENNIS MICHAEL L , PEDERSEN BO , SHEIH WILLIAM , MAHON CATHAL , HAYES M IMRAN
IPC分类号： H04J14/02 , H04B10/17 , H04B10/18
摘要： A system and method of providing a transmission span for a telecommunications link based on a remote Er -doped fiber amplification scheme is provided, where a transmission span comprises first through third segments each respectively comprising first-third optical fibers having first-third fiber lengths and first-third physical properties. The first and third segments are optically coupled to opposing ends of the second segment. At least one of the first and third physical properties is different from the second physical property, where the first segment provides low nonlinearity, the third segment provides distributed gain, and the second segment compensates for the dispersion of the first and third segments. The span also includes a fourth optical fiber that is doped with a non-zero concentration of Er , and is disposed at a location in the span for remote pumping to provide discrete amplification of the optical signal. The location can be within the first segment, within the second segment, within the third segment, at an interface between the first and second segments, and/or at an interface between the second and the third segments.

8. 发明专利

AU2002305402A1 Split redundant trunk architecture using passive splitters and path switching 未知
公开(公告)号：AU2002305402A1
公开(公告)日：2002-11-18
申请号：AU2002305402
申请日：2002-05-06
申请人： DORSAL NETWORKS INC
发明人： ESMAN RONALD DALE , JOHNSON RONALD E , MILLER BRENT ASHLEY , HAGOPIAN JOHN , FEINBERG LEE DANIEL , HAYEE IMRAN M , MAHON CATHAL , RAMANUJAM NANDAKUMAR , PEDERSEN BO
IPC分类号： G02B20060101 , G02F1/00 , H04B10/00 , H04B10/02 , H04B10/08 , H04B10/12 , H04B10/213 , H04B10/29 , H04J14/00 , H04J14/02 , H04J14/08 , H04Q11/00
摘要： A collapsed ring fiber optic system includes a service path and a protection path provides at a shallow water portion of the fiber optic system, to deal with any fiber cuts that may occur at the shallow water portion without loss of main trunk bandwidth. The service and protection paths meet at a branch point, which is preferably located at a deep water portion of the fiber optic system. A passive combiner or a 1x2 switch is provided at the branch unit, along with a detector and a processor, to determine whether any signals are being received from the service path, and if not, to reconfigure the system to accept signals from the protection path. At another shallow water portion of the fiber optic system, nearby where a destination is located, the signal provided on the optical path over the deep water portion is split into a service path and a protection path, to provide redundancy to deal with any fiber cuts that may occur. The fiber optic system may also be utilized for a land-based system, having high probability of fiber cut regions and low probability of fiber cut regions.

9. 发明专利

AU2002311832A1 Pump assembly employing coupled radiation sources 未知
公开(公告)号：AU2002311832A1
公开(公告)日：2002-11-05
申请号：AU2002311832
申请日：2002-04-19
申请人： DORSAL NETWORKS INC
发明人： CLARK THOMAS , SHIEH WILLIAM , PETRICEVIC VLADIMIR
IPC分类号： H01S3/094 , H01S3/23 , H04B10/17 , H01S3/00
摘要： A method of amplifying optical signals comprising providing a plurality of input radiation signals into the inputs of a PxV coupler, each of the input radiation signals having a respective input radiation profile having a set of pump wavelengths and pump powers corresponding to the respective wavelengths, wherein at least one set is different from at least one other set; providing V output pump radiation profiles from the outputs of the PxV coupler; and amplifying an optical data signal by coupling at least one of the V output pump radiation profiles with the optical data signal, wherein at least one of the V output pump radiation profiles has a different power than at least one other of the V output pump radiation profiles.

10. 发明专利

CA2441065A1 METHOD AND SYSTEM FOR DISPERSION MAPS AND ENHANCED DISTRIBUTED GAIN EFFECT IN LONG HAUL TELECOMMUNICATIONS 未知
公开(公告)号：CA2441065A1
公开(公告)日：2002-09-26
申请号：CA2441065
申请日：2002-03-15
申请人： DORSAL NETWORKS INC
发明人： HAYES M IMRAN , RAMANUJAM NANDAKUMAR , MAHON CATHAL , PEDERSEN BO , SHEIH WILLIAM , DENNIS MICHAEL L
IPC分类号： H04B10/17 , H04B10/18 , H04B10/12 , H04J14/02 , H01S3/10 , H01S3/108 , H01S3/30
摘要： A system and method of providing a transmission span (100) that compensates for signal attenuation, dispersion, and nonlinearity of an optical signal communicated between two line units (102, 104) of a transmission link includ es dividing the transmission span (100) into a plurality of fiber segments and selecting a particular fiber for each of the segments. The fiber selection a nd arrangement of fibers within the span (100) can be selected in accordance wi th the nonlinearity, dispersion conditions, and distributed gain conditions of the constituent fibers. In a three segment map, the first segment (110) can provide low non linearity, the third segment (130) can provide distributed gain, and the second segment (120) can compensate for the dispersion of the first and third segments (130). The span (100) can be used, e.g., for distributed Raman amplification. The span (100) can alternatively include a two segment map, a four segment map, or a map with additional segments.

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