公开(公告)号：EP2437418A2

公开(公告)日：2012-04-04

申请号：EP11181203.8

申请日：2011-09-14

申请人： Fujitsu Limited

发明人： Bouda, Martin ,  Kim, Inwoong ,  Naito, Takao

IPC分类号： H04J14/02 ,  H04B10/155

CPC分类号： H04J14/02 ,  H04J14/0221

摘要： According to one embodiment, a system for transmitting an optical signal comprises a traffic distribution circuit configured to distribute traffic to a plurality of wavelength division multiplexer (WDM) modules. The system further comprises a first WDM module and a second WDM module. The first and second WDM modules each comprise a plurality of tunable optical transmitters, with each transmitter associated with a different wavelength band of a plurality of wavelength bands. Each transmitter in the first and second WDM modules is also tuned to transmit optical signals in channels included within the associated wavelength band of the transmitter. The first and second WDM modules each comprise a multiplexer configured to combine the optical signals transmitted from the plurality of transmitters into optical signals. The system further comprises a cyclic multiplexer configured to combine the optical signals from the first and second WDM modules into an optical output signal.

公开(公告)号：EP2433378A2

公开(公告)日：2012-03-28

申请号：EP10778047.0

申请日：2010-05-20

申请人： NeoPhotonics Corporation

发明人： WAY, Winston, I.

IPC分类号： H04B10/13

CPC分类号： H04J14/021 ,  H04B10/40 ,  H04B10/5167 ,  H04J14/02 ,  H04J14/0256 ,  H04J14/026 ,  H04J14/0265

摘要： Disclosed by way of exemplary embodiments, a 40/50/10 Gb/s Optical Transceivers/transponders which use opto-electronic components at data rates collectively that are lower than or equal to half the data rate, using two optical duobinary carriers. More specifically, the exemplary embodiments of the disclosed optical transceivers/transponders relate to a 43 Gb/s 300 pin MSA and a 43~56 Gb/s CFP MSA module, both include a two-carrier optical transceiver and the appropriate hardware architecture and MSA standard interfaces. The two-carrier optical transceiver is composed of a pair of 10 Gb/s optical transmitters, each using band-limited duobinary modulation at 20~28 Gb/s. The wavelength channel spacing can be as little as 19~25 GHz. The same principle is applied to a 100 Gb/s CFP module, which is composed of four tunable 10 Gb/s optical transmitters, with the channel spacing between optical carriers up to a few nanometers.

公开(公告)号：EP2429101A1

公开(公告)日：2012-03-14

申请号：EP10175752.4

申请日：2010-09-08

申请人： University College Cork-National University of Ireland, Cork

发明人： Ellis, Andrew. D. ,  Sygletos, Stylianos ,  Gunning, Fatima C. Garcia ,  Frascella, Paola ,  Ibrahim, Selwan K. ,  Weerasuriya, Ruwan

IPC分类号： H04B10/148 ,  H04B10/155 ,  H04J14/02

CPC分类号： H04B10/548 ,  H04J14/02 ,  H04J14/0201 ,  H04L27/2618 ,  H04L27/2646 ,  H04L27/2662

摘要： The invention provides a multi-carrier system for use in an optical network adapted to transmit and/or receive signals, said system comprising means for recovering multiple phase-synchronised sub-carriers from at least one signal in the network; means for recovering a clock signal from the sub-carriers and determining the frequency and the phase change between sub-carriers; and means for compensating the signal using said clock signal. The clock signal can be re-used for new generation of same frequency spacing subcarriers (and phase-locked) to the original signal. Any fluctuations of both frequency and the phase from the original phase-synchronised signal is transferred also to the clock signal, and therefore, using appropriate feedback electronics, compensation can be provided at a transmitter/receiver. Suitable for Optical Orthogonal Frequency Division Multiplexing (OFDM) and Coherent WDM multi-carrier systems.

摘要翻译： 本发明提供了一种用于在适于发送和/或接收信号的光网络中使用的多载波系统，所述系统包括用于从网络中的至少一个信号恢复多个相位同步子载波的装置; 用于从子载波恢复时钟信号并确定子载波之间的频率和相位变化的装置; 以及用于使用所述时钟信号补偿信号的装置。 时钟信号可以重新用于与原始信号相同的频率间隔副载波（和锁相）的新一代。 来自原始相位同步信号的频率和相位的任何波动也被传送到时钟信号，因此使用适当的反馈电子装置可以在发射机/接收机处提供补偿。 适用于光学正交频分复用（OFDM）和相干WDM多载波系统。

公开(公告)号：EP2416512A1

公开(公告)日：2012-02-08

申请号：EP10171861.7

申请日：2010-08-04

申请人： Nokia Siemens Networks Oy

发明人： Jansen, Sander ,  Van Den Borne, Dirk

IPC分类号： H04J14/02 ,  H04B10/155

CPC分类号： H04J14/02 ,  H04B10/07955 ,  H04B10/548 ,  H04B10/572 ,  H04L5/0007 ,  H04L5/0066 ,  H04L27/2626

摘要： A method and an apparatus for an optical communication system are provided, the method comprising the steps of generating a first optical signal and a second optical signal, multiplexing the first optical signal in a first optical channel and a second optical signal in a second optical channel, the first and the second optical channels being spectrally separated neighboring channels, measuring the level of out-of-band optical power associated with the second optical channel and frequency shifting the second optical channel when a frequency drift of the first optical channel occurs, so that the level of out-of-band optical power associated with the second optical channel is held constant.

摘要翻译： 提供了一种用于光通信系统的方法和装置，所述方法包括以下步骤：产生第一光信号和第二光信号，将第一光信道中的第一光信号和第二光信道中的第二光信号复用 第一和第二光通道是频谱分离的相邻通道，测量与第二光通道相关联的带外光功率的电平，并且当第一光通道的频率漂移发生时频移第二光通道，因此 与第二光通道相关联的带外光功率的水平保持恒定。

公开(公告)号：EP2409369A1

公开(公告)日：2012-01-25

申请号：EP10711653.5

申请日：2010-03-19

申请人： Dublin City University

发明人： ANANDARAJAH, Prince ,  BARRY, Liam

IPC分类号： H01S5/042 ,  H01S5/0687 ,  H01S5/062 ,  H01S5/065

CPC分类号： H04B10/506 ,  H01S5/005 ,  H01S5/0085 ,  H01S5/0427 ,  H01S5/06213 ,  H01S5/0653 ,  H01S5/0658 ,  H01S5/0687 ,  H04J14/02

摘要： The present application relates to comb frequency generator devices generally and more particularly to the use of comb generators for use in fibre optic communications. More particularly, the application provides a frequency comb generator device. The device comprises a laser (30), a biasing circuit for providing a DC bias current (26), an RF circuit (22) providing a RF signal and a drive circuit (28) for combining the RF signal with the DC bias current to provide a drive current to the laser (30). With the DC bias current below threshold of the laser diode and RF bias with a frequence close to the relaxation ascillation frequency of the laser diode, a periodic pulse train is emitted with constant phase.

公开(公告)号：EP2406899A1

公开(公告)日：2012-01-18

申请号：EP10751235.2

申请日：2010-03-08

申请人： TYCO ELECTRONICS SUBSEA COMMUNICATIONS LLC

发明人： CAI, Yi

IPC分类号： H04B10/00

CPC分类号： H04B10/677 ,  H04J14/02

摘要： A distortion compensation system and method may be used to compensate for data pattern dependent signal distortion in a signal received in a coherent optical signal receiver. In general, the distortion compensation system and method compares a received signal field with stored distorted signal waveforms associated with known data patterns and selects a compensation value associated with the distorted signal waveform that corresponds most closely with the received signal field. The distortion compensation system and method compensates the received signal using the selected compensation value and thus mitigates the effects of data pattern dependent signal distortion.

公开(公告)号：EP2390719A1

公开(公告)日：2011-11-30

申请号：EP11167632.6

申请日：2011-05-26

申请人： FUJITSU LIMITED

发明人： Futami, Fumio

IPC分类号： G02F1/35 ,  H04B10/02 ,  H04J14/02

CPC分类号： G02F1/3532 ,  G02F1/3513 ,  G02F1/3536 ,  H04B10/00 ,  H04J14/02 ,  H04J14/0201 ,  H04J14/0212

摘要： There is provides a wavelength conversion apparatus (100) for converting a wavelength of input signal light and for outputting output signal light of the converted wavelengths. The apparatus (100) includes a first (116) and a second (122) nonlinear mediums. The first nonlinear medium (116) receives a first input light and outputs a first output light having a wavelength which is longer than that of the first input light, the wavelength being dependent on the optical power of the first input light. The second nonlinear medium (122) receives a second input light and a light output by a light source (132) and outputs a second output light having a wavelength dependent on the wavelengths of the second input light and the light. The first output light is input as the second input light to the second nonlinear medium (122) or the second output light is input as the first input light to the first nonlinear medium (116).

摘要翻译： 提供了用于转换输入信号光的波长并输出转换的波长的输出信号光的波长转换装置（100）。 装置（100）包括第一（116）和第二（122）非线性介质。 第一非线性介质（116）接收第一输入光并输出具有比第一输入光的波长长的波长的第一输出光，该波长取决于第一输入光的光功率。 第二非线性介质（122）接收第二输入光和由光源（132）输出的光，并输出具有取决于第二输入光和光的波长的波长的第二输出光。 将第一输出光作为第二输入光输入到第二非线性介质（122），或者将第二输出光作为第一输入光输入到第一非线性介质（116）。

公开(公告)号：EP2383910A1

公开(公告)日：2011-11-02

申请号：EP11158644.2

申请日：2011-03-17

申请人： FUJITSU LIMITED

发明人： Nakamoto, Hiroshi

IPC分类号： H04B10/148 ,  H04B10/155 ,  H04B10/18 ,  H04J14/06

CPC分类号： H04B10/2572 ,  H04B10/50 ,  H04B10/60 ,  H04J14/02 ,  H04J14/0279 ,  H04J14/06

摘要： In the optical transmitting system, the optical transmitter means (11) transmits a polarization combined signal light obtained by combining a pair of lights having different polarization orientation, and the optical receiver means (12) separates the combined signal light. In the optical transmitter means (11), a polarization changer means (3) changes a state of polarization of the polarization combined signal light. In the optical receiver means (12), a polarization reverse-changer means (6) changes the state of the polarization combined signal light in a reverse direction of the change that polarization changer means (3) applies.

摘要翻译： 在光发送系统中，光发送装置（11）发送通过组合具有不同偏振取向的一对光获得的偏振组合信号光，并且光接收装置（12）分离组合信号光。 在光发射机装置（11）中，偏振变换装置（3）改变偏振组合信号光的偏振状态。 在光接收装置（12）中，偏振反向变换装置（6）使偏振组合信号光的状态与偏光变换装置（3）的变化相反的方向变化。

公开(公告)号：EP2033349B1

公开(公告)日：2011-10-26

申请号：EP07845253.9

申请日：2007-06-04

申请人： Aurora Networks, Inc.

发明人： MOSTERT, Willem, A. ,  MYSORE, Sudhesh ,  CHANG, Samuel ,  WANG, Shamino ,  BARKER, Charles ,  SNIEZKO, Oleh

IPC分类号： H04J14/02 ,  H04B10/18

CPC分类号： H04J14/02 ,  H04B10/27 ,  H04B10/2725 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0219 ,  H04J14/0224

摘要： Methods and apparatus are described for DWDM transport of CATV and digital signals over optical fiber in low-dispersion spectral regions. A method includes transporting a plurality of optical carriers of different wavelengths over an optical link using wavelength division multiplexing, the optical link including a plurality of optical segments. The plurality of optical channel center wavelengths defined by the plurality of optical carriers are clustered proximate an average value of a zero-dispersion wavelength of the optical link, or near either a) a low wavelength edge or b) a high wavelength edge of a range of zero-dispersion wavelengths of the optical link and a plurality of optical channel center frequencies defined by the plurality of optical channel center wavelengths are non-uniformly spaced apart.

公开(公告)号：EP2362558A1

公开(公告)日：2011-08-31

申请号：EP10153711.6

申请日：2010-02-16

申请人： Nokia Siemens Networks Oy

发明人： Gottwald, Erich ,  Rohde, Harald

IPC分类号： H04B10/155

CPC分类号： G02F1/01 ,  H04B10/6164 ,  H04B10/6165 ,  H04J14/02

摘要： The invention relates to an optical network element comprising a light source providing an optical signal that is fed to at least two modulators; wherein each modulator provides an optical carrier signal that is conveyed to a receiving unit; wherein the receiving unit is arranged to determine a deviation signal between the optical carrier signal and a carrier conveyed via an incoming signal and to feed the deviation signal to the modulator for adjusting the frequency and/or the phase of the optical carrier signal. Also, a corresponding method for processing data and a communication system comprising at least one optical network are suggested.

摘要翻译： 本发明涉及一种光网络元件，包括提供被馈送到至少两个调制器的光信号的光源; 其中每个调制器提供被传送到接收单元的光载波信号; 其中所述接收单元被布置成确定所述光载波信号和经由输入信号传送的载波之间的偏差信号，并将所述偏差信号馈送到所述调制器以调整所述光载波信号的频率和/或相位。 此外，提出了一种用于处理数据的相应方法和包括至少一个光网络的通信系统。