-
公开(公告)号：US20050232627A1
公开(公告)日：2005-10-20
申请号：US10827306
申请日：2004-04-20
Applicant: Fengguo Sun , GaoZhi Xiao , Zhenguo Lu , Chander Grover
Inventor： Fengguo Sun , GaoZhi Xiao , Zhenguo Lu , Chander Grover
CPC classification number: H04B10/07953
Abstract: Method and apparatus for real time measuring of an optical signal to noise ration (OSNR) of an optical channel is disclosed. The apparatus comprises a fiber Bragg grating for reflecting a signal component of the optical channel and for transmitting a noise component of the optical channel therethrough. Two photodetectors are provided disposed at two ends of the fiber Bragg grating for detecting a fraction of the reflected signal component and the transmitted noise component respectively. Electrical outputs of the photodetectors are communicated to a microprocessor for determining the OSNR. The invention provides a simple, compact, reliable, relatively fast and inexpensive technique to monitor OSNR.
Abstract translation: 公开了用于光信道的光信噪比（OSNR）的实时测量的方法和装置。 该装置包括光纤布拉格光栅，用于反射光通道的信号分量，并用于传输光通道的噪声分量。 提供两个光电探测器设置在光纤布拉格光栅的两端，用于分别检测反射信号分量和发射噪声分量的一部分。 将光电检测器的电输出传送到微处理器以确定OSNR。 本发明提供了一种简单，紧凑，可靠，相对快速和便宜的监控OSNR的技术。
-
公开(公告)号：US06917747B2
公开(公告)日：2005-07-12
申请号：US10372851
申请日：2003-02-26
Applicant: Gaozhi Xiao , Zhiyi Zhang , Zhenguo Lu , Jiaren Liu , Chander P. Grover
Inventor： Gaozhi Xiao , Zhiyi Zhang , Zhenguo Lu , Jiaren Liu , Chander P. Grover
CPC classification number: H04J14/0221 , H04J14/02
Abstract: An integrated optical dynamic channel equalizer that can be employed to equalize the channel gain level in a WDM transmission line and monitor the optical channel performance. The device consists of a circulator, a dynamic gain equalizer chip and a controller. Due to the simplicity of the dynamic gain equalizer chip, which includes one 1×n multiplexer/demultiplexer, an n-channel variable optical attenuator array (VOA-n), a partially transparent dielectric reflective means and an n-channel detector array, the device is very compact and can be fabricated at low cost. By placing a quarter wave plate between the n-channel variable optical attenuator array and the partially transparent reflective means in the dynamic channel equalizer chip, the device can be rendered polarization insensitive.
Abstract translation: 一种集成的光学动态信道均衡器，其可用于均衡WDM传输线中的信道增益电平并监视光信道性能。 该器件由循环器，动态增益均衡器芯片和控制器组成。 由于包括一个1xn多路复用器/解复用器，n沟道可变光衰减器阵列（VOA-n），部分透明介质反射装置和n沟道检测器阵列的动态增益均衡器芯片的简单性，器件是 非常紧凑，可以低成本制造。 通过在n沟道可变光衰减器阵列和动态通道均衡器芯片中的部分透明的反射装置之间放置四分之一波片，该装置可以使其偏振不敏感。
-
3.发明授权公开(公告)号：US06671085B2
公开(公告)日：2003-12-30
申请号：US10042334
申请日：2002-01-11
Applicant: Vincent So , Zhenguo Lu
Inventor： Vincent So , Zhenguo Lu
IPC: H04B1012
CPC classification number: H01S3/06754 , H01S3/10015 , H01S3/10023 , H01S3/1301 , H01S3/1305 , H01S3/2383 , H01S2301/04
Abstract: A switchable dynamic gain-flattened optical amplifier with wide adjustable gain range is provided. Optical signals are amplified through common amplification such that the gain is approximately common to all optical signals. Further, gain specific amplification is then achieved through distinct amplification wherein the optical signal is routed through one of N parallel amplification paths each having its well-designed gain. The amplifier makes use of a control circuit to self-adjust quickly and respond to changes in input conditions, operating conditions of the optical amplifier and gain requirements while maintaining gain flatness and a low noise figure (NF) over a broad optical bandwidth and a wide range of gain levels. The optical amplifier is highly desirable in dense wavelength-division-multiplexed (DWDM) systems for responding to changes in operating conditions due to link loss, pump deterioration, channel add/drop, and network reconfigurations.
-
公开(公告)号：US07991023B2
公开(公告)日：2011-08-02
申请号：US12585830
申请日：2009-09-25
Applicant: Jiaren Liu , Zhenguo Lu , Sylvain Raymond , Philip Poole , Pedro Barrios , Daniel Poitras
Inventor： Jiaren Liu , Zhenguo Lu , Sylvain Raymond , Philip Poole , Pedro Barrios , Daniel Poitras
CPC classification number: H01S5/065 , B82Y20/00 , H01S5/0657 , H01S5/3412
Abstract: A multi-band (multi-color) multiwavelength mode locked laser diode is provided by dynamic phase compensation of a quantum dot active medium. The laser diode is provided with a PIN diode structure where the active medium consists of a plurality of layers of quantum dots such as those produced by self-assembly from known chemical beam epitaxy methods. The multiplicity of bands may be produced by AC Stark splitting, frequency selective attenuation, or by the inclusion of multiple different layers having different, respective, peak ASE emissions. Dispersion compensation within laser facets, waveguides, and the optically active media permit the selection of a fixed dispersion within the cavity. A dynamic group phase change induced by the AC Stark effect permits compensation of the fixed dispersion sufficiently to produce an intraband mode-locked laser. Even interband mode locking was observed.
Abstract translation: 通过量子点活性介质的动态相位补偿提供多波段（多色）多波长锁模激光二极管。 激光二极管设置有PIN二极管结构，其中活性介质由多个量子点层组成，例如通过已知化学束外延方法通过自组装产生的量子点。 频带的多样性可以通过AC Stark分裂，频率选择性衰减或包含具有不同的相应峰值ASE发射的多个不同的层来产生。 激光小平面，波导和光学活性介质内的色散补偿允许选择腔内的固定分散体。 由AC Stark效应引起的动态组相变使得可以充分补偿固定分散体，以产生嵌入式锁模激光器。 观察到甚至带间模式锁定。
-
5.发明申请公开(公告)号：US20060045412A1
公开(公告)日：2006-03-02
申请号：US11214783
申请日：2005-08-31
Applicant: Gaozhi Xiao , Ping Zhao , Fengguo Sun , Zhenguo Lu , Zhiyi Zhang , Chander Grover
Inventor： Gaozhi Xiao , Ping Zhao , Fengguo Sun , Zhenguo Lu , Zhiyi Zhang , Chander Grover
IPC: G02B6/12
CPC classification number: G01D5/35383 , G02B6/12011 , G02B6/12019 , G02B6/12026
Abstract: A compact interrogator for the simultaneous interrogation of multi wavelength-modulated fiber optical sensors, includes a planar waveguide based demultiplexer receiving input signals from the sensors. An array of detectors is coupled to output waveguides of the demultiplexer corresponding to different nominal wavelengths. A tuning element matches the nominal wavelengths of the output waveguide to the input signals from the respective sensors to find the wavelengths of the individual sensors to be interrogated.
Abstract translation: 用于同时询问多波长调制光纤传感器的紧凑型询问器包括一个接收来自传感器的输入信号的基于平面波导的解复用器。 检测器阵列耦合到对应于不同标称波长的解复用器的输出波导。 调谐元件将输出波导的标称波长与来自相应传感器的输入信号相匹配，以找到待询问的各个传感器的波长。
-
Patent Agency Ranking
公开(公告)号：US20100142566A1
公开(公告)日：2010-06-10
申请号：US12585830
申请日：2009-09-25
Applicant: Jiaren Liu , Zhenguo Lu , Sylvain Raymond , Philip Poole , Pedro Barrios , Daniel Poitras
Inventor： Jiaren Liu , Zhenguo Lu , Sylvain Raymond , Philip Poole , Pedro Barrios , Daniel Poitras
CPC classification number: H01S5/065 , B82Y20/00 , H01S5/0657 , H01S5/3412
Abstract: A multi-band (multi-colour) multiwavelength mode locked laser diode is provided by dynamic phase compensation of a quantum dot active medium. The laser diode is provided with a PIN diode structure where the active medium consists of a plurality of layers of quantum dots such as those produced by self-assembly from known chemical beam epitaxy methods. The multiplicity of bands may be produced by AC Stark splitting, frequency selective attenuation, or by the inclusion of multiple different layers having different, respective, peak ASE emissions. Dispersion compensation within laser facets, waveguides, and the optically active media permit the selection of a fixed dispersion within the cavity. A dynamic group phase change induced by the AC Stark effect permits compensation of the fixed dispersion sufficiently to produce an intraband mode-locked laser. Even interband mode locking was observed.
Abstract translation: 通过量子点活性介质的动态相位补偿提供多波段（多色）多波长锁模激光二极管。 激光二极管设置有PIN二极管结构，其中活性介质由多个量子点层组成，例如通过已知化学束外延方法通过自组装产生的量子点。 频带的多样性可以通过AC Stark分裂，频率选择性衰减或包含具有不同的相应峰值ASE发射的多个不同的层来产生。 激光小平面，波导和光学活性介质内的色散补偿允许选择腔内的固定分散体。 由AC Stark效应引起的动态组相变使得可以充分补偿固定分散体，以产生嵌入式锁模激光器。 观察到带间模式锁定。
-
公开(公告)号：US06947129B1
公开(公告)日：2005-09-20
申请号：US10842495
申请日：2004-05-11
Applicant: Zhenguo Lu , Fengguo Sun , GaoZhi Xiao , Chander P. Grover
Inventor： Zhenguo Lu , Fengguo Sun , GaoZhi Xiao , Chander P. Grover
CPC classification number: G01M11/336
Abstract: Polarization-mode dispersion (PMD) of an optical device, i.e. fiber or component is effected by launching a first pump laser beam of a fixed wavelength, a probe laser beam with a second fixed wavelength and a second pump laser beam having a variable wavelength and a polarization direction orthogonal to the other two beams into an optical device to generate three output signals which are input into a semiconductor optical amplifier to generate four-wave mixing (FWM) products. The average PMD of the device is computed by measuring the power of the FWM products versus the wavelength of the second pump laser beam.
Abstract translation: 通过发射固定波长的第一泵激光束，具有第二固定波长的探针激光束和具有可变波长的第二泵浦激光束来实现光学装置即光纤或分量的偏振模色散（PMD） 将与其他两个光束正交的偏振方向转换成光学装置，以产生输入到半导体光放大器中以产生四波混频（FWM）产物的三个输出信号。 通过测量FWM产品的功率与第二泵浦激光束的波长来计算装置的平均PMD。
-
公开(公告)号：US07769062B2
公开(公告)日：2010-08-03
申请号：US12076618
申请日：2008-03-20
Applicant: Zhenguo Lu , Jiaren Liu , Sylvain Raymond , Philip Poole , Pedro Barrios , Daniel Poitras
Inventor： Zhenguo Lu , Jiaren Liu , Sylvain Raymond , Philip Poole , Pedro Barrios , Daniel Poitras
CPC classification number: H01S5/341 , B82Y20/00 , H01S5/0608 , H01S5/1096 , H01S5/3412 , H01S5/34306 , H01S5/34373
Abstract: Methods and devices for providing a multiwavelength laser which may be used for multicasting and other optical communications uses. The present invention provides a quantum dot based multiwavelength laser with a monolithic gain block. The Fabry-Perot gain block has both upper and lower InP cladding layers. The laser system has a middle quantum dot layer with multiple stacked layers of InAs quantum dots embedded in InGaAsP. When provided with a CW injection current, the laser system produces an output spectra with equally spaced multiple emission peaks. With an input optical data signal applied to the laser system, the laser system duplicates the data in the input signal across multiple different wavelengths.
Abstract translation: 用于提供可用于组播和其他光通信使用的多波长激光器的方法和装置。 本发明提供了一种具有单片增益块的基于量子点的多波长激光器。 法布里 - 珀罗增益块具有上和下InP包层。 激光系统具有中子量子点层，InGaAsP中嵌有InAs量子点的多层堆叠层。 当提供CW注入电流时，激光系统产生具有等间隔的多个发射峰的输出光谱。 通过施加到激光系统的输入光学数据信号，激光系统在多个不同波长上复制输入信号中的数据。
-
公开(公告)号：US20090238228A1
公开(公告)日：2009-09-24
申请号：US12076618
申请日：2008-03-20
Applicant: Zhenguo Lu , Jiaren Liu , Sylvain Raymond , Philip Poole , Pedro Barrios , Daniel Poitras
Inventor： Zhenguo Lu , Jiaren Liu , Sylvain Raymond , Philip Poole , Pedro Barrios , Daniel Poitras
IPC: H01S5/00
CPC classification number: H01S5/341 , B82Y20/00 , H01S5/0608 , H01S5/1096 , H01S5/3412 , H01S5/34306 , H01S5/34373
Abstract: Methods and devices for providing a multiwavelength laser which may be used for multicasting and other optical communications uses. The present invention provides a quantum dot based multiwavelength laser with a monolithic gain block. The Fabry-Perot gain block has both upper and lower InP cladding layers. The laser system has a middle quantum dot layer with multiple stacked layers of InAs quantum dots embedded in InGaAsP. When provided with a CW injection current, the laser system produces an output spectra with equally spaced multiple emission peaks. With an input optical data signal applied to the laser system, the laser system duplicates the data in the input signal across multiple different wavelengths.
Abstract translation: 用于提供可用于组播和其他光通信使用的多波长激光器的方法和装置。 本发明提供了一种具有单片增益块的基于量子点的多波长激光器。 法布里 - 珀罗增益块具有上和下InP包层。 激光系统具有中子量子点层，InGaAsP中嵌有InAs量子点的多层堆叠层。 当提供CW注入电流时，激光系统产生具有等间隔的多个发射峰的输出光谱。 通过施加到激光系统的输入光学数据信号，激光系统在多个不同波长上复制输入信号中的数据。
-
10.发明授权公开(公告)号：US07283692B2
公开(公告)日：2007-10-16
申请号：US11214783
申请日：2005-08-31
Applicant: Gaozhi Xiao , Ping Zhao , Fengguo Sun , Zhenguo Lu , Zhiyi Zhang , Chander P. Grover
Inventor： Gaozhi Xiao , Ping Zhao , Fengguo Sun , Zhenguo Lu , Zhiyi Zhang , Chander P. Grover
CPC classification number: G01D5/35383 , G02B6/12011 , G02B6/12019 , G02B6/12026
Abstract: A compact interrogator for the simultaneous interrogation of multi wavelength-modulated fiber optical sensors, includes a planar waveguide based demultiplexer receiving input signals from the sensors. An array of detectors is coupled to output waveguides of the demultiplexer corresponding to different nominal wavelengths. A tuning element matches the nominal wavelengths of the output waveguide to the input signals from the respective sensors to find the wavelengths of the individual sensors to be interrogated.
Abstract translation: 用于同时询问多波长调制光纤传感器的紧凑型询问器包括一个接收来自传感器的输入信号的基于平面波导的解复用器。 检测器阵列耦合到对应于不同标称波长的解复用器的输出波导。 调谐元件将输出波导的标称波长与来自相应传感器的输入信号相匹配，以找到待询问的各个传感器的波长。
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.009 seconds)
