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51. 发明申请

US20040091265A1 Passive optical network using loop back of multi-wavelength light generated at central office 失效
标题翻译：无源光网络使用中央办公室产生的多波长光环路
公开(公告)号：US20040091265A1
公开(公告)日：2004-05-13
申请号：US10427284
申请日：2003-05-01
发明人： Jong-Kwon Kim , Seong-Taek Hwang , Yun-Je Oh
IPC分类号： H04J014/00 , H04J014/02
CPC分类号： H04B10/2587 , H04J14/0221 , H04J14/0226 , H04J14/0246 , H04J14/025 , H04J2014/0253 , H04Q11/0067 , H04Q2011/0016
摘要： A passive optical network includes a central office and a subscriber-side apparatus connected with the central office through an optical fiber link. The subscriber-side apparatus performs communication with the central office based on wavelength-division-multiplexed optical signals. The central office has a routing section, provided with first to fourth multiplexing ports, for demultiplexing multi-wavelength light inputted from the fourth multiplexing port into a plurality of channels. Each of the demultiplexed channels is amplified and multiplexed for output through the first multiplexing port. Optical signals inputted through the third multiplexing port are demultiplexed and outputted upstream. The routing section also multiplexes channels for downstream optical signals, outputting the multiplexed channels through the second port. A splitting section, provided with first to third splitting ports and arranged on a loop optical waveguide connects the first and fourth multiplexing port with each other. The splitting section causes some of multi-wavelength light inputted into the first splitting port to be outputted through the second splitting port and causes the remainder of multi-wavelength light to be outputted through the third splitting port connected with the fourth multiplexing port. A circulator causes the multi-wavelength light inputted through the second splitting port to be transmitted to the subscriber-side apparatus and causes upstream optical signals received from the subscriber-side apparatus to be outputted to the third multiplexing port.
摘要翻译：无源光网络包括通过光纤链路与中心局连接的中心局和用户侧设备。用户侧设备基于波分复用光信号与中心局进行通信。中心局具有路由部分，设置有第一到第四复用端口，用于将从第四复用端口输入的多波长光解复用为多个信道。每个解复用的信道被放大和多路复用以通过第一复用端口输出。通过第三复用端口输入的光信号被解复用并在上游输出。路由部分还复用用于下行光信号的信道，通过第二端口输出多路复用信道。具有第一至第三分离端口并布置在环形光波导上的分离部分将第一和第四复用端口彼此连接。分割部使通过第二分割口输出输入到第一分割端口的一部分多波长光，并且通过与第四复用端口连接的第三分离端口输出剩余的多波长光。循环器使得通过第二分割端口输入的多波长光被发送到用户侧装置，并且使从用户侧装置接收到的上行光信号输出到第三复用端口。

52. 发明授权

US06567195B1 Optical network using remote optical powering of optoelectronic switch 有权
标题翻译：光网络使用远程光电开关光电开关
公开(公告)号：US06567195B1
公开(公告)日：2003-05-20
申请号：US09335334
申请日：1999-06-17
申请人： Joseph Earl Ford , Wayne Harvey Knox , Ashok V. Krishnamoorthy , Martin C. Nuss
发明人： Joseph Earl Ford , Wayne Harvey Knox , Ashok V. Krishnamoorthy , Martin C. Nuss
IPC分类号： H04B1024
CPC分类号： H04B10/2587 , G02F1/0121
摘要： An optical local area network uses modified remote network interface cards (NICs) to provide an optical carrier signal for signaling use by a centralized optoelectronic switch unit. The NIC optical transceiver is modified so that instead of being normally “off” during the standby mode, the data signal is logically inverted to be “on.” Light from each NIC is used to provide optical power for a corresponding optical modulator on the switch unit.
摘要翻译：光学局域网使用改进的远程网络接口卡（NIC）来提供光载波信号，用于集中式光电开关单元的信令使用。 NIC光收发器被修改为使得在待机模式期间不是正常地“关闭”数据信号在逻辑上反转为“开”。来自每个NIC的光用于为开关单元上的对应的光调制器提供光功率。

53. 发明申请

US20020061035A1 Optical transmission device and optical transmission system using the same 有权
标题翻译：光传输装置及使用该光传输系统的光传输系统
公开(公告)号：US20020061035A1
公开(公告)日：2002-05-23
申请号：US09905045
申请日：2001-07-12
申请人： Hitachi,Ltd.
发明人： Shigeru Tokita , Mitsuo Akashi , Naohiko Baba , Yoichi Honzawa , Hideki Satoh
IPC分类号： H01S003/10
CPC分类号： H04B10/2587
摘要： An optical transmission system includes a current source for outputting a drive current, a semiconductor laser for converting the drive current into a stimulated emission light and producing the same, a drive circuit for converting a transmission data signal into a modulation control signal and outputting the same, an optical modulator for receiving the stimulated emission light and a shading control signal for interrupting light emission and producing and outputting transmission signal light by changing an amount of transmission of the stimulated emission light according to the shading control signal, and a shading element for receiving the transmission signal light and a shading control signal for interrupting light emission and interrupting the transmission of the transmission signal light according to the shading control signal whereby an optical signal having wrong optical wavelength is rapidly prevented.
摘要翻译：一种光传输系统，包括用于输出驱动电流的电流源，用于将驱动电流转换为受激发射光的半导体激光器，用于将发送数据信号转换成调制控制信号并将其输出的驱动电路，用于接收受激发射光的光调制器和用于中断发光的遮光控制信号，并根据遮蔽控制信号改变受激发射光的透射量并产生并输出透射信号光;以及遮光元件，用于接收发送信号光和用于中断发光的遮蔽控制信号，并且根据遮蔽控制信号中断发送信号光的发送，由此迅速防止具有错误的光波长的光信号。

54. 发明授权

US6118565A Coherent optical communication system 失效
标题翻译：相干光通信系统
公开(公告)号：US6118565A
公开(公告)日：2000-09-12
申请号：US940755
申请日：1997-09-30
申请人： Nicholas J. Frigo
发明人： Nicholas J. Frigo
IPC分类号： H04J14/00 , H04B10/20 , H04B10/26 , H04J14/02 , H04B10/00
CPC分类号： H04B10/2587
摘要： A coherent optical system includes an optical coupler or combiner for combining a received upstream optical signal and an optical local oscillator signal. The coherent optical system further includes a coherent optical receiver which is configured to receive and process the combined optical signal from the optical coupler to retrieve upstream information from the upstream optical signal. In certain embodiments, the coherent optical communication system includes a central office having an optical source for generating a composite downstream optical signal made up of downstream optical signals of particular wavelengths (or sets of wavelengths). A downstream optical signal having a particular wavelength (or set of wavelengths) is routed to a downstream destination with a portion of the downstream optical signal (after modulation with upstream information) being returned to the central office as an upstream optical signal of the particular wavelength (or set of wavelengths) which is part of a composite upstream optical signal. At the central office, the optical coupler or combiner combines the received upstream optical signal and the optical local oscillator signal, and the coherent optical receiver processes the combined optical signal. The optical source for generating the downstream optical signals can be the same or a similar optical source for generating the local oscillator signal. Thus, the coherent optical system can alleviate the problems and costs associated with generating the local oscillator signal because the same or a similar source is readily available. Using the same or similar optical source to generate the downstream optical signals and the local oscillator system permits an increase in capacity without the additional cost of wavelength-registered and -stabilized optical sources at the subscriber locations.
摘要翻译：相干光学系统包括用于组合接收的上行光信号和光本地振荡器信号的光耦合器或组合器。相干光学系统还包括相干光接收器，其被配置为从光耦合器接收并处理组合的光信号以从上游光信号中检索上游信息。在某些实施例中，相干光通信系统包括具有用于产生由特定波长（或一组波长）的下行光信号组成的复合下行光信号的光源的中心局。具有特定波长（或一组波长）的下行光信号被路由到具有下游光信号的一部分（在具有上行信息的调制之后）的下游目的地作为特定波长的上行光信号返回到中心局（或一组波长），其是复合上行光信号的一部分。在中心局，光耦合器或组合器组合接收的上行光信号和光本地振荡器信号，并且相干光接收机处理组合的光信号。用于产生下行光信号的光源可以是相同的或用于产生本地振荡器信号的类似的光源。因此，相干光学系统可以减轻与产生本地振荡器信号相关的问题和成本，因为相同或相似的源是容易获得的。使用相同或相似的光源来产生下行光信号，并且本地振荡器系统允许增加容量，而不需要在用户位置处波长注册和稳定的光源的附加成本。

55. 发明授权

US5307195A Method and means for the transmission of an electromagnetic signal in an optical fiber 失效
标题翻译：用于在光纤中传输电磁信号的方法和装置
公开(公告)号：US5307195A
公开(公告)日：1994-04-26
申请号：US892621
申请日：1992-06-01
申请人： Pierre Nicole
发明人： Pierre Nicole
IPC分类号： H04B10/00 , H04B10/22 , H04B10/26 , H04B10/06
CPC分类号： H04B10/2587
摘要： In a method of transmitting an electromagnetic signal in an optical fiber a polarized optical base signal is generated and input at a first and of an optical fiber, an optical signal emerging from the fiber after the base signal has passed through it is recovered at a second end of the fiber; this emergent signal is processed by electro-optical modulation with the electromagnetic signal which is to be transmitted and polarization conversion is effected, and the optical signal modified in this way is reinput to the said second end of the fiber; an optical return signal emerging from the fiber after the modified optical signal has passed through it is recovered at the first end of the optical fiber and this is analyzed in order to determine the characteristics of the electromagnetic signal.
摘要翻译：在光纤中发送电磁信号的方法中，在第一和第一光纤上产生并输入偏振光基信号，在基信号通过之后从光纤出射的光信号在第二纤维端; 这种紧急信号通过电光调制被处理，电磁信号将被传输并进行极化转换，并且以这种方式修改的光信号被重新输入到光纤的所述第二端; 在修改的光信号已经通过之后从光纤出来的光返回信号在光纤的第一端被恢复，并且这被分析以确定电磁信号的特性。

56. 发明授权

US5031234A Fiber optic frequency transfer link 失效
标题翻译：光纤频率传输链路
公开(公告)号：US5031234A
公开(公告)日：1991-07-09
申请号：US359801
申请日：1989-05-31
申请人： Lori E. Primas , Richard L. Sydnor , George F. Lutes
发明人： Lori E. Primas , Richard L. Sydnor , George F. Lutes
IPC分类号： H04B10/26
CPC分类号： H04B10/2587
摘要： A reference frequency distribution system for transmitting a reference frequency from a reference unit to a remote unit while keeping the reference frequency at the reference unit and remote unit in phase. A fiber optic cable connects the reference unit to the remote unit. A frequency source at the reference unit produces a reference frequency having an adjustable phase. A fiber optic transmitter at the reference unit modulates a light beam with the reference frequency and transmits the light beam into the fiber optic cable. A 50/50 reflector at the remote unit reflects a first portion of the light beam from the reference unit back into the fiber optic cable to the reference unit. A first fiber optic receiver disposed at the remote unit receives a second portion of the light beam and demodulates the reference frequency therefrom to be used at the remote unit. A second fiber optic receiver disposed at the reference unit receives the first portion of the light beam and demodulates a reference frequency component therefrom. A phase conjugator is connected to the frequency source for comparing the phase of the reference frequency component to the phase of the reference frequency modulating the light beam being transmitted from the reference unit and for continuously adjusting the phase of the reference frequency modulating the light beam being transmitted from the reference unit to maintain a conjugate (anti-symmetric) relationship between the reference frequency component and the reference frequency modulating the light beam whereby virtually no phase difference exists between the phase of the reference frequency component and the phase of the reference frequency modulating the light beam.
摘要翻译：一种参考频率分配系统，用于将参考频率从参考单元发送到远程单元，同时将参考频率保持在参考单元和远程单元的同相。光纤电缆将参考单元连接到远程单元。在参考单元处的频率源产生具有可调相位的参考频率。在参考单元处的光纤发射器调制具有参考频率的光束并将光束传输到光纤电缆中。遥控单元上的50/50反射器将来自参考单元的光束的第一部分反射回到光纤电缆到参考单元。设置在远程单元处的第一光纤接收器接收光束的第二部分并且解调其参考频率以在远程单元处使用。设置在参考单元处的第二光纤接收器接收光束的第一部分并从其解调参考频率分量。相位共轭器连接到频率源，用于将参考频率分量的相位与调制从参考单元发射的光束的参考频率的相位进行比较，并且用于连续调节调制光束的参考频率的相位为从参考单元发送以保持参考频率分量和调制光束的参考频率之间的共轭（反对称）关系，从而在参考频率分量的相位和参考频率调制的相位之间几乎不存在相位差光束。

57. 发明授权

US4955086A Reflection transmitter and receiver means for a bidirectional light waveguide communications system 失效
标题翻译：用于双向光波导通信系统的反射发射器和接收器装置
公开(公告)号：US4955086A
公开(公告)日：1990-09-04
申请号：US284728
申请日：1988-12-15
申请人： Stefan Kindt
发明人： Stefan Kindt
IPC分类号： G02F1/03 , G02F1/225 , H04B10/2587
CPC分类号： H04B10/2587 , G02F1/225
摘要： A bidirectional light waveguide communications system comprising a light waveguide and a light source, preferably formed by a laser, at one end of a light waveguide, and having a reflection transmitter at the other end. The reflection transmitter is formed by an electrically controllable integrated optical Fabry-Perot resonator whose strip electrode is terminated by two partially reflecting mirror layers and whose control electrodes are charged with a transmission signal. The opto-electrical transducer of the subscriber is positioned adjacent one of the partially reflecting mirrored layers, while the other partially reflecting mirrored layer is connected to the light waveguide.
摘要翻译：一种双向光波导通信系统，包括光波导和光源，优选地由激光器形成在光波导的一端，并且在另一端具有反射发射器。反射发射器由电可控的集成光学法布里 - 珀罗谐振器形成，其带状电极由两个部分反射镜层端接，并且其控制电极被充满传输信号。用户的光电换能器位于部分反射镜像层之一附近，而另一部分反射镜像层连接到光波导。

58. 发明申请

US20180164521A1 DATACENTER INTERCONNECTION SYSTEM 审中-公开
公开(公告)号：US20180164521A1
公开(公告)日：2018-06-14
申请号：US15882576
申请日：2018-01-29
申请人： Alcatel-Lucent USA Inc.
发明人： Peter J. Winzer , David T. Neilson , Roland Ryf
IPC分类号： G02B6/43 , H04J14/02 , H04B10/61 , H04B10/40 , G02B6/12 , H04B10/2587 , G02B6/293
CPC分类号： G02B6/43 , G02B6/00 , G02B6/12 , G02B6/2938 , G02B2006/12142 , G02B2006/1215 , H04B10/2587 , H04B10/40 , H04B10/61 , H04J14/02
摘要： An optical line card includes a plurality of coherent receivers and a plurality of optical modulators. The coherent receivers are each configured to receive a corresponding channel of a received optical superchannel. The optical modulators are each configured transmit a corresponding channel of a transmitted optical superchannel. Each of a plurality of optical splitters is configured to receive a corresponding one of a plurality of unmodulated optical signals from an optical source external to the line card. Each splitter directs a first portion of light received by that splitter to a corresponding one of the coherent receivers, and a second portion of light received by that splitter to a corresponding one of said optical modulators.

59. 发明申请

US20180152260A1 APPARATUS FOR TRANSMITTING OPTICAL SIGNALS BETWEEN A CENTRAL UNIT AND AT LEAST ONE REMOTE UNIT 审中-公开
公开(公告)号：US20180152260A1
公开(公告)日：2018-05-31
申请号：US15575203
申请日：2016-05-17
申请人： POLITECNICO DI MILANO
发明人： Mario MARTINELLI , Umberto SPAGNOLINI
IPC分类号： H04J14/02 , H04B10/27 , H04B10/50
CPC分类号： H04J14/0245 , H04B10/2587 , H04B10/27 , H04B10/272 , H04B10/50 , H04B10/60 , H04J14/06
摘要： An apparatus for transmitting optical signals between a central unit (1) and at least one remote unit (2), said central unit comprising—at least one amplified spontaneous emission source (11, 110) of an optical signal, first means (17, 170) adapted to polarize the optical signal deriving from the amplified spontaneous emission source in a first polarization plane by forming a first polarized optical signal (POS). The apparatus comprises second means (24) configured to receive said first polarized optical signal and to polarize it in a second polarization plane, orthogonal to the first plane, by forming in said first means a second optical signal (SOS) which is orthogonally polarized with respect to the first optical signal (17).

60. 发明申请

US20180063609A1 OPTICAL SIGNAL AMPLIFICATION 审中-公开
公开(公告)号：US20180063609A1
公开(公告)日：2018-03-01
申请号：US15565302
申请日：2016-04-21
申请人： Alcatel Lucent
发明人： Wolfgang POEHLMANN , Rene BONK
IPC分类号： H04Q11/00 , H04B10/2587 , H04B10/29
CPC分类号： H04Q11/0067 , H04B10/2587 , H04B10/29 , H04Q2011/0035 , H04Q2011/0039
摘要： A method for optical signal amplification in an optical communication system is presented. The optical communication system comprises an optical line terminal, a plurality of optical network units, an optical splitter and a plurality of circulators. The optical network units comprise each an optical amplifier. A first optical signal is sent in a downstream direction from the optical line terminal to a first circulator from the plurality of circulators. The first optical signal is further sent from the first circulator to a first optical network unit from the plurality of optical network units and it bypasses the optical splitter. The first optical signal is amplified in the optical amplifier of the first optical network unit to generate an amplified optical signal. The amplified optical signal is sent from the first optical network unit to the first circulator through the optical splitter and is further sent from the first circulator to a further of the plurality of optical network units.

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