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    LIGHT MODULATION CIRCUIT
    21.
    发明申请
    LIGHT MODULATION CIRCUIT 有权
    光调制电路

    公开(公告)号：US20150261059A1

    公开(公告)日：2015-09-17

    申请号：US14418386

    申请日：2013-09-26

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Hiroshi Yamazaki ,  Hiroshi Takahashi ,  Takashi Goh ,  Takashi Saida ,  Kiyofumi Kikuchi

    IPC: G02F1/225

    CPC classification number: G02F1/225 ,  G02F1/0123 ,  G02F1/035 ,  G02F1/2255 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/126 ,  G02F2201/16 ,  G02F2203/19 ,  H04B10/5051 ,  H04B10/588

    Abstract: An optical modulation circuit includes: a first Mach-Zehnder modulating portion including a first output port and a second output port, wherein the first Mach-Zehnder modulating portion is push-pull driven by a main signal; a second Mach-Zehnder modulating portion connected to the first output port of the first Mach-Zehnder modulating portion, wherein the second Mach-Zehnder modulating portion is push-pull driven by a correction signal; and an asymmetric light combining portion combining an optical signal outputted from an output port of the second Mach-Zehnder modulating portion with an optical signal outputted from the second output port of the first Mach-Zehnder modulating portion in a light intensity coupling ratio of r to 1-r, wherein an optical path length from the first output port to the asymmetric light combining portion is substantially equal to an optical path length from the second output port to the asymmetric light combining portion.

    Abstract translation: 光调制电路包括：第一马赫 - 曾德调制部分，包括第一输出端口和第二输出端口，其中第一马赫 - 策德尔调制部分由主信号驱动; 第二马赫 - 策德尔调制部分，连接到第一马赫 - 策德尔调制部分的第一输出端口，其中第二马赫 - 策德尔调制部分由校正信号驱动; 以及非对称光合成部，其将从所述第二马赫 - 策德尔调制部的输出端口输出的光信号与从所述第一马赫 - 策德尔调制部的所述第二输出端口输出的光信号的光强度耦合比率r 1-r，其中从第一输出端口到非对称光合成部分的光路长度基本上等于从第二输出端口到非对称光合并部分的光路长度。

    Gain control for an optical modulator
    22.
    发明授权
    Gain control for an optical modulator 有权
    光调制器的增益控制

    公开(公告)号：US09104084B2

    公开(公告)日：2015-08-11

    申请号：US13551514

    申请日：2012-07-17

    Applicant: Alan Tipper ,  Amyas Holroyd

    Inventor： Alan Tipper ,  Amyas Holroyd

    IPC: H04B10/50 ,  G02F1/225 ,  H04B10/556

    CPC classification number: G02F1/225 ,  G02F2201/16 ,  G02F2201/18 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/5561

    Abstract: There is described an optical modulation system for transmitting modulated optical light. The system comprises an electro-optic modulator having at least two arms through which light is transmitted and an imbalance electrode located on at least one arm. A current source is configured to inject current into the imbalance electrode for modifying the phase of light passing through the arm. A dither generator is configured to modulate the injected current, or bias voltage applied to at least one of the arms, with a dither signal. A phase sensitive detector is configured to detect an error in the phase of light emitted by the modulator. An operating point controller is configured to monitor the detected phase error and adjust the current injected into the imbalance arm so as to compensate for the detected error and thereby control an operating point of the modulator.

    Abstract translation: 描述了用于发射调制光的光调制系统。 该系统包括电光调制器，该电光调制器具有至少两个臂，光穿过该臂传播，并且不平衡电极位于至少一个臂上。 电流源被配置为将电流注入到不平衡电极中，以改变通过臂的光的相位。 抖动发生器被配置为用抖动信号调制施加到至少一个臂的注入电流或偏置电压。 相敏检测器被配置为检测由调制器发射的光的相位中的误差。 操作点控制器被配置为监视检测到的相位误差并调整注入到不平衡臂中的电流，以补偿检测到的误差，从而控制调制器的工作点。

    Methods and apparatus to control acousto-optic deflectors
    24.
    发明授权
    Methods and apparatus to control acousto-optic deflectors 有权
    控制声光偏转器的方法和装置

    公开(公告)号：US09069227B2

    公开(公告)日：2015-06-30

    申请号：US14112332

    申请日：2012-04-13

    Applicant: Paul A. Kirkby ,  K. M. Naga Srinivas Nadella ,  R. Angus Silver

    Inventor： Paul A. Kirkby ,  K. M. Naga Srinivas Nadella ,  R. Angus Silver

    IPC: G02F1/33 ,  G02B21/00 ,  G02F1/11

    CPC classification number: G02F1/33 ,  G02B21/0024 ,  G02F1/11 ,  G02F1/113 ,  G02F1/332 ,  G02F2201/16 ,  G02F2203/28

    Abstract: The invention is directed to an acousto-optic lens (AOL) and corresponding method. The AOL of the invention comprises a first and second acousto-optic deflector, each being arranged to support a respective acoustic wave. The AOL includes a driver for synthesizing first and second drive signals for the respective first and second acousto-optic deflectors. The driver is arranged to synthesize the drive signals so as to be phase-modulated by functions that can be expressed as a Taylor series having one or more coefficients greater than second order. The functions are preferably non-sinusoidal and have sufficient magnitude at the higher orders to effect one or more of fixed aberration correction, dynamic aberration correction and Z-scanning.

    Abstract translation: 本发明涉及一种声光透镜（AOL）和相应的方法。 本发明的AOL包括第一和第二声光偏转器，每个声光偏转器被布置成支撑相应的声波。 AOL包括用于合成用于相应的第一和第二声光偏转器的第一和第二驱动信号的驱动器。 驱动器被布置为合成驱动信号，以便通过可以表示为具有大于二阶的一个或多个系数的泰勒级数的函数进行相位调制。 这些功能优选地是非正弦的，并且在较高阶上具有足够的量值以实现固定像差校正，动态像差校正和Z扫描中的一个或多个。

    OPTICAL RESONATOR APPARATUS, OPTICAL TRANSMITTER AND CONTROLLING METHOD FOR OPTICAL RESONATOR
    25.
    发明申请
    OPTICAL RESONATOR APPARATUS, OPTICAL TRANSMITTER AND CONTROLLING METHOD FOR OPTICAL RESONATOR 有权
    光学谐振器装置，光学发射器和光学谐振器的控制方法

    公开(公告)号：US20150132015A1

    公开(公告)日：2015-05-14

    申请号：US14529740

    申请日：2014-10-31

    Applicant: FUJITSU LIMITED ,  Photonics Electronics Technology Research Association

    Inventor： Akinori Hayakawa

    IPC: G02F1/025 ,  G02F1/01 ,  H04B10/572 ,  G02B6/28

    CPC classification number: G02F1/025 ,  G02B6/28 ,  G02B6/29364 ,  G02B6/4215 ,  G02F1/0147 ,  G02F1/225 ,  G02F2001/0151 ,  G02F2201/16 ,  G02F2203/15 ,  H04B10/5057 ,  H04B10/572

    Abstract: An optical resonator apparatus includes an optical resonator unit wherein ring optical resonators each including a first optical waveguide and a resonance wavelength adjustment electrode are coupled in cascade connection and round-trip lengths of the ring optical waveguides are different from each other and vary in order from an input side to an output side, and a controller that adjusts a resonance wavelength of each ring optical resonator in order beginning with the ring optical resonator provided at the most input side so as to match with an input light wavelength and, when an inter-channel occurs, adjusts the resonance wavelength of the first ring optical resonator from the input side so as to match with a second-matching input light wavelength and adjusts the resonance wavelengths of the second and succeeding ring optical resonators from the input side so as to match with the first-matching input light wavelength.

    Abstract translation: 光谐振器装置包括光谐振器单元，其中每个包括第一光波导和共振波长调节电极的环形光谐振器以级联方式耦合，环形光波导的往返长度彼此不同，并且从 输入侧的输入侧，以及控制器，其以从输入侧的最大输入侧设置的环状光学谐振器开始依次调整各环状光谐振器的共振波长，以便与输入光波长相匹配， 从输入侧调整第一环形光谐振器的共振波长，以便与第二匹配输入光波长相匹配，并且从输入侧调节第二和后续环形光谐振器的谐振波长，以便匹配 具有第一匹配输入光波长。

    ALL SILICON OPTICAL TRANSISTOR
    26.
    发明申请
    ALL SILICON OPTICAL TRANSISTOR 有权
    所有硅光学晶体管

    公开(公告)号：US20150098674A1

    公开(公告)日：2015-04-09

    申请号：US14400231

    申请日：2012-10-15

    Applicant: PURDUE RESEARCH FOUNDATION

    Inventor： Leo Tom Varghese ,  Minghao Qi ,  Li Fan ,  Jian Wang

    IPC: G02B6/12 ,  G02B6/42

    CPC classification number: G02B6/12007 ,  G02B6/29341 ,  G02B6/4295 ,  G02B2006/12097 ,  G02F1/0147 ,  G02F1/025 ,  G02F2201/16 ,  G02F2202/105 ,  G02F2203/15

    Abstract: An optical device includes first and second waveguides and a micro-ring. The first waveguide is optically coupled to the micro-ring and is separated from the micro-ring by a first gap having a first gap distance. The second waveguide has a supply port, an output port, and a coupling portion optically coupled to the micro-ring. The coupling portion is separated from the micro-ring by a second gap having a second distance. The second gap distance is larger than the first gap distance. The second waveguide and the micro-ring cooperate to form a filter having a stop band. The first gap distance is selected such that a first optical signal on the first waveguide having a first strength causes a first shift in the stop band such that a first wavelength is within the stop band, and wherein the second gap distance is selected such that a second optical signal on the second waveguide having the first strength causes a second or no shift in the stop band such that the first wavelength is outside of the stop band.

    Abstract translation: 光学装置包括第一和第二波导和微环。 第一波导光耦合到微环，并且通过具有第一间隙距离的第一间隙与微环分离。 第二波导具有供给端口，输出端口和光耦合到微环的耦合部分。 耦合部分通过具有第二距离的第二间隙与微环分离。 第二间隙距离大于第一间隙距离。 第二波导和微环合作形成具有阻带的滤波器。 选择第一间隙距离，使得具有第一强度的第一波导上的第一光信号导致阻带中的第一移位，使得第一波长在阻带内，并且其中选择第二间隙距离，使得 具有第一强度的第二波导上的第二光信号导致阻带中的第二或不移位，使得第一波长在阻带外。

    Optical Beam Steering for Tunable Laser Applications
    28.
    发明申请
    Optical Beam Steering for Tunable Laser Applications 有权
    用于可调谐激光应用的光束转向

    公开(公告)号：US20140333986A1

    公开(公告)日：2014-11-13

    申请号：US14444533

    申请日：2014-07-28

    Applicant: FINISAR CORPORATION

    Inventor： Kevin J. McCallion

    IPC: G02F1/01 ,  H01S3/10 ,  H01S3/00

    CPC classification number: G02F1/0147 ,  G02B6/2931 ,  G02B6/29311 ,  G02B6/29313 ,  G02B26/0883 ,  G02F1/29 ,  G02F2201/16 ,  H01S3/0085 ,  H01S3/08004 ,  H01S3/08009 ,  H01S3/10 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02292 ,  H01S5/0612 ,  H01S5/12 ,  H01S5/141 ,  H01S5/142 ,  H01S5/146 ,  H01S5/4012 ,  H01S5/4031 ,  H01S5/4062 ,  H01S5/4075 ,  H01S5/4087

    Abstract: Methods for tuning a transmitter to a selected wavelength are disclosed. A transmitter including a laser array comprising a plurality of lasers spatially offset from one another and each having a laser output having a unique wavelength. A first prism is positioned to impart a first angular shift to the laser outputs to produce and a second prism is positioned to impart a second angular shift opposite the first angular shift on the outputs. An index modulating element is coupled to one of the first and second prisms and a controller is electrically coupled to the index modulating element to control an angle of light output form the second prism. An optical spectrum reshaper may be positioned between the second prism and the lens and have at least one transmission edge aligned with the wavelength at least one of the lasers.

    Abstract translation: 公开了将发射机调谐到选定波长的方法。 一种发射器，包括激光器阵列，所述激光器阵列包括彼此空间偏移的多个激光器，并且每个激光器具有具有独特波长的激光输出。 定位第一棱镜以向激光输出施加第一角度偏移以产生，并且第二棱镜被定位成在输出上施加与第一角度偏移相反的第二角度偏移。 索引调制元件耦合到第一和第二棱镜之一，并且控制器电耦合到索引调制元件以控制从第二棱镜输出的光的角度。 光谱整形器可以位于第二棱镜和透镜之间，并且至少一个传输边缘与至少一个激光器的波长对准。

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