公开(公告)号：US20130170833A1

公开(公告)日：2013-07-04

申请号：US13341111

申请日：2011-12-30

Applicant: RADHAKRISHNAN L. NAGARAJAN ,  MASAKI KATO ,  MICHAEL FRANCIS VAN LEEUWEN ,  TIMOTHY BUTRIE

Inventor： RADHAKRISHNAN L. NAGARAJAN ,  MASAKI KATO ,  MICHAEL FRANCIS VAN LEEUWEN ,  TIMOTHY BUTRIE

IPC: H04J14/02 ,  H04B10/04 ,  H04B10/12 ,  H04B10/06 ,  H04Q11/00

CPC classification number: G02B6/12026 ,  G02B6/12019 ,  G02F1/2257 ,  G02F2001/212 ,  H01S5/02453 ,  H01S5/4087 ,  H04J14/02

Abstract: Pairs of distributed feedback (DFB) lasers are provided on a substrate. An arrayed waveguide grating (AWG) is also provided on the substrate having input waveguides, each of which being connected to a corresponding pair of DFB lasers. The wavelengths of optical signals supplied from each pair of DFB lasers may be spectrally spaced from one another by a free spectral range (FSR) of the AWG. By selecting either a first or second DFB laser in a pair and temperature tuning to adjust the wavelength, each pair of DFB lasers can supply optical signals at one of four wavelengths, pairs of which are spectrally spaced from one another by the FSR of the AWG. A widely tunable transmitter may thus be obtained.

Abstract translation: 分布反馈（DFB）激光器在基板上提供。 阵列波导光栅（AWG）也设置在具有输入波导的基板上，每个波导光栅连接到相应的一对DFB激光器。 从每对DFB激光器提供的光信号的波长可以通过AWG的自由光谱范围（FSR）彼此光谱间隔。 通过选择成对的第一或第二DFB激光器和温度调谐来调整波长，每对DFB激光器可以以四个波长中的一个提供光信号，其中的一对波长由AWG的FSR彼此光谱间隔开 。 因此可以获得广泛可调的发射器。

公开(公告)号：US08472813B2

公开(公告)日：2013-06-25

申请号：US12818154

申请日：2010-06-18

Applicant: Neda Cvijetic ,  Narayan Prasad ,  Dayou Qian ,  Ting Wang

Inventor： Neda Cvijetic ,  Narayan Prasad ,  Dayou Qian ,  Ting Wang

IPC: H04B10/00 ,  H04B10/12

CPC classification number: H04L27/2646 ,  H04B10/548 ,  H04B10/614 ,  H04L25/03891 ,  H04L27/2626 ,  H04L27/2697

Abstract: A polarization-multiplexed (POLMUX) optical orthogonal frequency division multiplexing (OFDM) system with direct detection includes an adaptive dual POLMUX carrier OFDM transmitter; and a block symmetric (B-S) MIMO equalizer coupled to the adaptive dual POLMUX carrier OFDM transmitter through a standard single-mode-fiber (SSMF) feedback path.

Abstract translation: 具有直接检测的偏振复用（POLMUX）光正交频分复用（OFDM）系统包括自适应双波分多址载波OFDM发射机; 以及通过标准单模光纤（SSMF）反馈路径耦合到自适应双POLMUX载波OFDM发射机的块对称（B-S）MIMO均衡器。

公开(公告)号：US20130156443A1

公开(公告)日：2013-06-20

申请号：US13582510

申请日：2011-03-01

Applicant: Arthur James Lowery ,  Liang Bangyuan Du

Inventor： Arthur James Lowery ,  Liang Bangyuan Du

IPC: H04B10/12

CPC classification number: H04B10/25073 ,  H04B10/6161 ,  H04B10/6163 ,  H04B10/6971

Abstract: An equaliser (200) for equalisation of a signal transmitted via an optical fibre link from a transmitter to a corresponding receiver employs a backpropagation model (300) which comprises one or more sequential segments collectively representing an inverse fibre link. Each sequential segment comprises a linear backpropagation element (304), and a non-linear backpropagation element (306) having an associated compensation bandwidth (312). The equaliser (200) generates a distortion-mitigated signal by computing, for each sequential segment in turn, a first linear compensated signal from a signal input to the segment in accordance with the linear backpropagation element (304), and a non-linear compensated signal from the first linear compensated signal in accordance with the non-linear backpropagation element (306). Computation of the non-linear compensation signal comprises limiting a bandwidth of a compensation signal derived from the first linear compensated signal in accordance with the associated compensation bandwidth (312).

Abstract translation: 用于使通过光纤链路从发射机传输到相应接收机的信号的均衡的均衡器（200）采用反向传播模型（300），其包括一个或多个连续表示反向光纤链路的连续段。 每个顺序段包括线性反向传播元件（304）和具有相关联的补偿带宽（312）的非线性反向传播元件（306）。 均衡器（200）通过根据线性反向传播元件（304）计算从输入到片段的信号的第一线性补偿信号，对于每个顺序段，生成失真缓解信号，以及非线性补偿 来自第一线性补偿信号的信号根据非线性反向传播元件（306）。 非线性补偿信号的计算包括根据相关联的补偿带宽来限制从第一线性补偿信号导出的补偿信号的带宽（312）。

公开(公告)号：US20130148982A1

公开(公告)日：2013-06-13

申请号：US13761867

申请日：2013-02-07

Applicant: Freedom Photonics, LLC.

Inventor： Jonathon Barton ,  Leif Johansson ,  Milan Mashanovitch

IPC: H04B10/12

CPC classification number: H04B10/516 ,  G02B6/125 ,  G02B6/2766 ,  G02B2006/12104 ,  G02F1/2255 ,  G02F1/2257 ,  G02F2001/212 ,  H04B10/503 ,  H04B10/505 ,  H04B10/5161 ,  H04B10/615 ,  H04B10/6151 ,  H04B10/801 ,  Y10T29/49826

Abstract: In various embodiments, a monolithic integrated transmitter, comprising an on-chip laser source and a modulator structure capable of generating advanced modulation format signals based on amplitude and phase modulation are described.

Abstract translation: 在各种实施例中，描述了包括片上激光源和能够基于幅度和相位调制产生高级调制格式信号的调制器结构的单片集成发射机。

公开(公告)号：US08428471B2

公开(公告)日：2013-04-23

申请号：US12461567

申请日：2009-08-17

Applicant: Jyehong Chen ,  Chun-Ting Lin ,  Po-Tsung Shih ,  Peng-Chun Peng ,  Sheng-Peng Dai ,  Sien Chi

Inventor： Jyehong Chen ,  Chun-Ting Lin ,  Po-Tsung Shih ,  Peng-Chun Peng ,  Sheng-Peng Dai ,  Sien Chi

IPC: H04B10/04 ,  H04B10/00 ,  H04B10/12 ,  H04J14/00

CPC classification number: H04B10/25759 ,  H04J14/02

Abstract: The present invention relates to an optical access system for dual service network, which mainly comprises an optical modulation device which is used to receive on-off keying (OOK) signal from cable network and radio frequency (RF) signal from wireless network, the optical modulation device then modulates the OOK signal and the RF signal to an optical signal and send out an output optical signal. Lastly, the output optical signal is being delivered to an optical receiving device through an optical fiber transmission channel, and the optical receiving device can access the OOK signal and RF signal from the output optical signal. In addition, the present invention does not require remote nodes (receiver side) to use any optical filter to discern on-off keying signal from cable network and RF signal from wireless network. The present invention can also apply to the field of wavelength-division multiplexing system.

Abstract translation: 本发明涉及一种用于双业务网络的光接入系统，主要包括一个光调制装置，用于从无线网络接收来自有线网络的开关键控（OOK）信号和射频（RF）信号，光接收机 调制装置然后将OOK信号和RF信号调制成光信号并发出输出光信号。 最后，输出光信号通过光纤传输通道传送到光接收装置，光接收装置可以从输出光信号接收OOK信号和RF信号。 此外，本发明不需要远程节点（接收机侧）使用任何光滤波器来从有线网络和无线网络的RF信号中识别开关键控信号。 本发明也可以应用于波分复用系统领域。

公开(公告)号：US08422888B2

公开(公告)日：2013-04-16

申请号：US12843753

申请日：2010-07-26

Applicant: Kimio Uekama

Inventor： Kimio Uekama

IPC: H04B10/12

CPC classification number: H04B10/25133

Abstract: An optical transmission system is provided with an optical transmission apparatus, an optical reception apparatus, an optical transmission line redundantly configured with an active system optical transmission line and an standby system optical transmission line, an optical switch that switches an optical transmission line between the active system optical transmission line and the standby system optical transmission line, a variable dispersion compensator placed between the optical switch and the optical reception apparatus, a dispersion amount measuring unit that measures the dispersion amount of the standby system optical transmission line when the active system optical transmission line is being selected by the optical switch, a dispersion compensation amount setting unit that sets the amount of dispersion compensation to be applied to the standby system optical transmission line based on the measured dispersion amount of the standby system optical transmission line, and a control unit that controls, when the optical transmission line is switched from the active system optical transmission line to the standby system optical transmission line by the optical switch, the variable dispersion compensator so that the amount of dispersion compensation becomes the set amount of dispersion compensation.

Abstract translation: 光传输系统设有光传输装置，光接收装置，冗余配置有源系统光传输线和备用系统光传输线的光传输线，光开关，用于将光传输线切换到主动 系统光传输线路和备用系统光传输线路，位于光开关和光接收装置之间的可变色散补偿器，分散量测量单元，用于测量当主动系统光传输时备用系统光传输线的色散量 线路由光开关选择;色散补偿量设定单元，其基于所测量的备用系统光传输线的色散量来设定应用于备用系统光传输线路的色散补偿量;以及控制 单元，当通过光开关将光传输线路从有源系统光传输线路切换到备用系统光传输线路时，可控色散补偿器使色散补偿量成为色散补偿的设定量。

公开(公告)号：US20130084077A1

公开(公告)日：2013-04-04

申请号：US13602855

申请日：2012-09-04

Applicant: Kazunori MUKASA

Inventor： Kazunori MUKASA

IPC: G02B6/036 ,  H04B10/12

CPC classification number: G02B6/02347 ,  G02B6/02333

Abstract: An optical fiber that propagates light over a use wavelength bandwidth of 100 nm or wider in a plurality of propagation modes is provided. The optical fiber has: a confinement loss equal to or less than 1 dB/km in each of the plurality of propagation modes over the use wavelength bandwidth; and a bending loss equal to or less than 100 dB/m in each of the plurality of propagation modes over the use wavelength bandwidth when the optical fiber is bent at a diameter of 20 mm.

Abstract translation: 提供了在多个传播模式中在100nm或更宽的使用波长带宽上传播光的光纤。 光纤具有：在使用波长带宽上的多个传播模式中的每一个中的限制损耗等于或小于1dB / km; 以及当光纤以20mm的直径弯曲时，在使用波长带宽上的多个传播模式中的每一个中的弯曲损耗等于或小于100dB / m。

公开(公告)号：US08401397B2

公开(公告)日：2013-03-19

申请号：US12623898

申请日：2009-11-23

Applicant: Tsukasa Takahashi

Inventor： Tsukasa Takahashi

IPC: H04B10/12

CPC classification number: H04B10/25133 ,  H04B10/672 ,  H04J14/02 ,  H04J14/0221 ,  H04J14/0279

Abstract: An optical reception device is provided. The optical reception device includes a filtering unit that receives input light of predetermined power, filters the input light by use of filter characteristics where the degree of attenuation of the power of an optical signal of predetermined frequency is lower than the degree of attenuation of the power of an optical signal of another frequency, and supplies an output light; and a determining unit that compares a value relevant to the power of the output light supplied by the filtering unit, with a threshold, and determines whether the input light contains signal light.

Abstract translation: 提供光接收装置。 光接收装置包括：接收预定功率的输入光的滤波单元，通过使用预定频率的光信号的功率的衰减程度低于功率衰减程度的滤波器特性对输入光进行滤波 的另一频率的光信号，并提供输出光; 以及确定单元，其将与由所述滤波单元提供的输出光的功率相关的值与阈值进行比较，并且确定所述输入光是否包含信号光。

公开(公告)号：US08391709B2

公开(公告)日：2013-03-05

申请号：US13525428

申请日：2012-06-18

Applicant: Paul Colbourne ,  Sheldon McLaughlin ,  Stephen Robert de Hennin ,  Pierre D. Wall

Inventor： Paul Colbourne ,  Sheldon McLaughlin ,  Stephen Robert de Hennin ,  Pierre D. Wall

IPC: H04J14/00 ,  H04B10/12 ,  G02B6/35 ,  G02B5/08

CPC classification number: H04Q11/0005 ,  H04J14/0206 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04Q2011/003 ,  H04Q2011/0052

Abstract: A wavelength selective switch (WSS) based on an array of MEMS mirrors tiltable in 1-dimension about only one axis exhibits “hitting” or unwanted port connections during switching. Two WSS's can be cascaded to create M×N switching functionality in a hitless manner by the inclusion of block ports at specified positions in one or both of the WSS's. Greater use efficiency of ports can be achieved if quasi-hitless performance is acceptable.

Abstract translation: 基于可在一维中仅倾斜一个轴倾斜的MEMS镜阵列的波长选择开关（WSS）在切换期间显示出打击或不需要的端口连接。 可以通过在一个或两个WSS中的指定位置处包含块端口，以无缝的方式级联两个WSS以创建M×N切换功能。 如果可以接受准无效的性能，则可以实现端口的更高的使用效率。

公开(公告)号：US08380078B2

公开(公告)日：2013-02-19

申请号：US12846022

申请日：2010-07-29

Applicant: Mark E. Boduch ,  Kimon Papakos ,  Gary M. Eslary ,  John M. Golding

Inventor： Mark E. Boduch ,  Kimon Papakos ,  Gary M. Eslary ,  John M. Golding

IPC: H04B10/12

CPC classification number: H04B10/07951 ,  H04B10/071 ,  H04B10/25133

Abstract: A chromatic dispersion compensation system for an optical transmission system incorporates circuitry which determines the length of an optical fiber extending between an output amplifier and an input amplifier. Based on fiber type, the total chromatic dispersion on the fiber is determined. Compensation can then be automatically implemented.

Abstract translation: 用于光传输系统的色散补偿系统包括确定在输出放大器和输入放大器之间延伸的光纤的长度的电路。 基于纤维类型，确定纤维上的总色散。 然后可以自动实施补偿。