公开(公告)号：US09954620B2

公开(公告)日：2018-04-24

申请号：US15514762

申请日：2015-10-01

申请人： B.G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD., AT BEN-GURION UNIVERSITY ,  BAR-ILAN UNIVERSITY

发明人： Dan Sadot ,  Zeev Zalevsky ,  Tomer Yeminy

IPC分类号： H04B10/61 ,  H04B10/516 ,  H04B10/54 ,  H04B10/556 ,  H04L25/03

CPC分类号： H04B10/615 ,  H04B10/291 ,  H04B10/5161 ,  H04B10/54 ,  H04B10/541 ,  H04B10/548 ,  H04B10/5561 ,  H04B10/612 ,  H04B2210/516 ,  H04L25/03165

摘要： A method for performing optical constellation conversion, according to which each received symbol from a constellation of input symbols is optically split into M components and each component is multiplied by a first predetermined different complex weighing factor, to achieve M firstly weighted components with different amplitudes. Then a nonlinear processor optically performs a nonlinear transform on each M firstly weighted components, so as to obtain M outputs which are linearly independent, Finally, a linear processor optically performs a linear transform to obtain a new converted constellation by optically multiplying, in the complex plane, each of the M outputs by a second predetermined different complex weighing factor, to achieve M secondly weighted components and then summing the M secondly weighted components.

公开(公告)号：US09369211B2

公开(公告)日：2016-06-14

申请号：US14511560

申请日：2014-10-10

申请人： NEC Laboratories America, Inc.

发明人： Yue Kai Huang ,  Shaoliang Zhang ,  Ezra Ip

IPC分类号： H04B10/04 ,  H04B10/54 ,  H04B10/67

CPC分类号： H04B10/541 ,  H04B10/676 ,  H04B2210/516

摘要： An optical communication method includes converting an optical pulse amplitude modulation (PAM) signal to a square QAM signal using an optical delay interferometer (DI) to perform all-optical PAM to QAM conversion in the DI; performing optical de-correlation of I and Q tributaries of the QAM signal to avoid frequency dependent attenuation in RF cabling which impacts signal quality; and finding optimal phase control mechanism of the DI by monitoring and equalizing down-converted I and Q electrical signal amplitudes, using coherent detection; and emulating a square quadrature amplitude modulation (QAM) optical signal with duplicated data copies.

摘要翻译： 光通信方法包括使用光学延迟干涉仪（DI）将光脉冲幅度调制（PAM）信号转换为平方QAM信号，以在DI中执行全光PAM至QAM转换; 执行QAM信号的I和Q支路的光学去相关，以避免影响信号质量的RF布线中的频率相关衰减; 并通过监测和均衡下变频的I和Q电信号幅度，使用相干检测找到DI的最佳相位控制机制; 并仿真具有重复数据副本的正方形正交幅度调制（QAM）光信号。

公开(公告)号：US07352968B2

公开(公告)日：2008-04-01

申请号：US11016020

申请日：2004-12-17

申请人： Parviz Tayebati ,  Daniel Mahgerefteh ,  Kevin McCallion

发明人： Parviz Tayebati ,  Daniel Mahgerefteh ,  Kevin McCallion

IPC分类号： H04B10/04 ,  H04J14/02

CPC分类号： H04B10/541 ,  G02B6/12009 ,  H04B10/506 ,  H04B2210/516

摘要： There is provided a fiber optic system comprising: a multi-wavelength source adapted to generate frequency modulated signals having different wavelengths, λ1, λ2, . . . , λn; and an arrayed waveguide grating adapted to convert the multiplicity of frequency modulated signals into a multiplicity of substantially amplitude modulated signals, and spatially combine the different wavelengths λ1, λ2, . . . , λn. And there is provided a method for transmitting an optical signal through a fiber comprising: operating a multi-wavelength source so as to generate frequency modulated signals having different wavelengths, λ1, λ2, . . . , λn; passing the frequency modulated signals through an arrayed waveguide grating so as to convert the frequency modulated signals into substantially amplitude modulated signals, and spatially combine the different wavelengths λ1, λ2, . . . , λn; and passing the substantially amplitude modulated signals into the fiber. And there is provided a fiber optic system comprising: a multi-wavelength source adapted to generate frequency modulated signals having different wavelengths, λ1, λ2, . . . , λn; and a beam combiner adapted to spatially combine the signals having different wavelengths and pass them into a periodic optical spectrum reshaper (OSR) to generate a plurality of substantially amplitude modulated signals having wavelengths λ1, λ2, . . . , λn.

公开(公告)号：US20050163512A1

公开(公告)日：2005-07-28

申请号：US11016020

申请日：2004-12-17

申请人： Parviz Tayebati ,  Daniel Mahgerefteh ,  Kevin McCallion

发明人： Parviz Tayebati ,  Daniel Mahgerefteh ,  Kevin McCallion

IPC分类号： H04B10/04

CPC分类号： H04B10/541 ,  G02B6/12009 ,  H04B10/506 ,  H04B2210/516

摘要： There is provided a fiber optic system comprising: a multi-wavelength source adapted to generate frequency modulated signals having different wavelengths, λ1, λ2, . . . , λn; and an arrayed waveguide grating adapted to convert the multiplicity of frequency modulated signals into a multiplicity of substantially amplitude modulated signals, and spatially combine the different wavelengths λ1, λ2, . . . , λn. And there is provided a method for transmitting an optical signal through a fiber comprising: operating a multi-wavelength source so as to generate frequency modulated signals having different wavelengths, λ1, λ2, . . . , λn; passing the frequency modulated signals through an arrayed waveguide grating so as to convert the frequency modulated signals into substantially amplitude modulated signals, and spatially combine the different wavelengths λ1, λ2, . . . , λn; and passing the substantially amplitude modulated signals into the fiber. And there is provided a fiber optic system comprising: a multi-wavelength source adapted to generate frequency modulated signals having different wavelengths, λ1, λ2, . . . , λn; and a beam combiner adapted to spatially combine the signals having different wavelengths and pass them into a periodic optical spectrum reshaper (OSR) to generate a plurality of substantially amplitude modulated signals having wavelengths λ1, λ2, . . . , λn.

公开(公告)号：US20190199559A1

公开(公告)日：2019-06-27

申请号：US16288057

申请日：2019-02-27

申请人： CABLE TELEVISION LABORATORIES, INC

发明人： Jing Wang ,  Luis Alberto Campos ,  Zhensheng Jia

IPC分类号： H04L25/49 ,  H04B10/2575 ,  H04W88/08 ,  H03M3/00

CPC分类号： H04B10/25753 ,  H03M3/424 ,  H03M3/43 ,  H03M3/454 ,  H03M3/496 ,  H04B1/0042 ,  H04B10/2575 ,  H04B10/541 ,  H04B2210/516 ,  H04J14/0298 ,  H04L25/4906 ,  H04Q11/0067 ,  H04Q11/0071 ,  H04Q11/02 ,  H04W88/085

摘要： A baseband processing unit includes a baseband processor configured to receive a plurality of component carriers of a radio access technology wireless service, and a delta-sigma digitization interface configured to digitize at least one carrier signal of the plurality of component carriers into a digitized bit stream, for transport over a transport medium, by (i) oversampling the at least one carrier signal, (ii) quantizing the oversampled carrier signal into the digitized bit stream using two or fewer quantization bits.

公开(公告)号：US20170222729A1

公开(公告)日：2017-08-03

申请号：US15514762

申请日：2015-10-01

申请人： B.G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD., AT BEN-GURION UNIVERSITY ,  BAR-ILAN UNIVERSITY

发明人： Dan SADOT ,  Zeev ZALEVSKY ,  Tomer YEMINY

IPC分类号： H04B10/61 ,  H04L25/03 ,  H04B10/516 ,  H04B10/54 ,  H04B10/556

CPC分类号： H04B10/615 ,  H04B10/291 ,  H04B10/5161 ,  H04B10/54 ,  H04B10/541 ,  H04B10/548 ,  H04B10/5561 ,  H04B10/612 ,  H04B2210/516 ,  H04L25/03165

摘要： A method for performing optical constellation conversion, according to which each received symbol from a constellation of input symbols is optically split into M components and each component is multiplied by a first predetermined different complex weighing factor, to achieve M firstly weighted components with different amplitudes. Then a nonlinear processor optically performs a nonlinear transform on each M firstly weighted components, so as to obtain M outputs which are linearly independent, Finally, a linear processor optically performs a linear transform to obtain a new converted constellation by optically multiplying, in the complex plane, each of the M outputs by a second predetermined different complex weighing factor, to achieve M secondly weighted components and then summing the M secondly weighted components.

公开(公告)号：US20150104192A1

公开(公告)日：2015-04-16

申请号：US14511560

申请日：2014-10-10

申请人： NEC Laboratories America, Inc.

发明人： Yue Kai Huang ,  Shaoliang Zhang ,  Ezra Ip

IPC分类号： H04B10/524 ,  H04B10/54

CPC分类号： H04B10/541 ,  H04B10/676 ,  H04B2210/516

摘要： An optical communication method includes converting an optical pulse amplitude modulation (PAM) signal to a square QAM signal using an optical delay interferometer (DI) to perform all-optical PAM to QAM conversion in the DI; performing optical de-correlation of I and Q tributaries of the QAM signal to avoid frequency dependent attenuation in RF cabling which impacts signal quality; and finding optimal phase control mechanism of the DI by monitoring and equalizing down-converted I and Q electrical signal amplitudes, using coherent detection; and emulating a square quadrature amplitude modulation (QAM) optical signal with duplicated data copies.

摘要翻译： 光通信方法包括使用光学延迟干涉仪（DI）将光脉冲幅度调制（PAM）信号转换为平方QAM信号，以在DI中执行全光PAM至QAM转换; 执行QAM信号的I和Q支路的光学去相关，以避免影响信号质量的RF布线中的频率相关衰减; 并通过监测和均衡下变频的I和Q电信号幅度，使用相干检测找到DI的最佳相位控制机制; 并仿真具有重复数据副本的正方形正交幅度调制（QAM）光信号。