公开(公告)号：US20110019199A1

公开(公告)日：2011-01-27

申请号：US12921235

申请日：2008-03-07

Applicant: Tetsuya Kawanishi ,  Shinya Nakajima ,  Satoshi Shinada

Inventor： Tetsuya Kawanishi ,  Shinya Nakajima ,  Satoshi Shinada

IPC: G01B9/02

CPC classification number: G02F1/225 ,  G02F2001/212 ,  G02F2201/18 ,  G02F2203/69

Abstract: Problem An object is to provide a method for evaluating characteristics of individual Mach-Zehnder (MZ) interferometers in an optical modulator which includes a plurality of MZ interferometers.Means for Solving Problems The method comprises a step for adjusting a bias voltage of the MZ interferometer, a step for eliminating zero-order components, a step for measuring an output intensity and a step for evaluating characteristics. An optical modulator (1) includes the first MZ interferometer (2) and the second MZ interferometer (3). The first MZ interferometer (2) includes wave-branching section (5). Two arms (6,7), wave coupling section (8) and electrodes which is not shown in figures.

Abstract translation: 问题目的是提供一种用于评估包括多个MZ干涉仪的光学调制器中的各个马赫 - 曾德（MZ）干涉仪的特性的方法。 解决问题的手段该方法包括用于调整MZ干涉仪的偏置电压的步骤，消除零阶分量的步骤，用于测量输出强度的步骤和用于评估特性的步骤。 光调制器（1）包括第一MZ干涉仪（2）和第二MZ干涉仪（3）。 第一MZ干涉仪（2）包括波分支部分（5）。 两个臂（6,7），波形耦合部分（8）和电极，未示于图中。

公开(公告)号：US07826689B2

公开(公告)日：2010-11-02

申请号：US12289980

申请日：2008-11-07

Applicant: Masaki Sugiyama

Inventor： Masaki Sugiyama

IPC: G02F1/035 ,  G02F1/225

CPC classification number: G02F1/035 ,  G02B6/29352 ,  G02F1/2255 ,  G02F2201/16 ,  G02F2201/18 ,  G02F2203/02 ,  G02F2203/07

Abstract: According to an aspect of an embodiment, an optical device comprising: a first modulator for independently modulating first light having a first predetermined polarization mode; a second modulator for independently modulating second light having a second predetermined polarization mode; and a polarization beam coupler having a first port, a second port, a third port, and a fourth port; the polarization beam coupler for inputting the first light from the first modulator via the first port, inputting the second light from the second modulator via the second port, outputting the first light via the third port and inputting reflected and polarization converted light on the first light by a wave plate and a mirror, and outputting the first light having the converted polarization mode and the second light having the predetermined polarization mode via the fourth port.

Abstract translation: 根据实施例的一个方面，一种光学装置，包括：第一调制器，用于独立地调制具有第一预定偏振模式的第一光; 用于独立地调制具有第二预定偏振模式的第二光的第二调制器; 以及具有第一端口，第二端口，第三端口和第四端口的偏振光束耦合器; 所述偏振光束耦合器用于经由所述第一端口输入来自所述第一调制器的第一光，经由所述第二端口输入来自所述第二调制器的所述第二光，经由所述第三端口输出所述第一光，并在所述第一光上输入反射和偏振转换的光 通过波片和反射镜，经由第四端口输出具有转换的偏振模式的第一光和具有预定偏振模式的第二光。

公开(公告)号：US20100202723A1

公开(公告)日：2010-08-12

申请号：US12636522

申请日：2009-12-11

Applicant: Masaki Sugiyama

Inventor： Masaki Sugiyama

IPC: G02F1/035

CPC classification number: G02F1/2255 ,  G02F1/0316 ,  G02F2201/18

Abstract: In an optical modulator, an intermediate substrate is provided separate from a main substrate on which a plurality of optical modulation sections are provided in parallel, and signal lines corresponding to the optical modulation sections are formed on the intermediate substrate. The signal lines are connected to signal electrodes corresponding to the main substrate, and have electrical lengths that are different from each other. Furthermore, the propagation loss per unit length in the signal lines on the intermediate substrate is preferably less than the propagation loss per unit length in the signal electrodes on the main substrate. As a result, even if a plurality of optical modulation sections are arranged in parallel, and the input ends of the signal electrodes of the optical modulation sections are arranged side by side on one side face of the substrate, synchronized modulation light of a low noise at a wide band width can be output from the optical modulation sections.

Abstract translation: 在光调制器中，中间基板与主基板分离设置，主基板上并列设置多个光调制部，并且在中间基板上形成与光调制部对应的信号线。 信号线连接到与主基板对应的信号电极，并具有彼此不同的电长度。 此外，中间基板上的信号线中的每单位长度的传播损耗优选小于主基板上的信号电极中的每单位长度的传播损耗。 结果，即使并行地配置多个光调制部，并且光调制部的信号电极的输入端并排配置在基板的一个侧面上，具有低噪声的同步调制光 可以从光调制部输出宽带宽。

公开(公告)号：US07649918B2

公开(公告)日：2010-01-19

申请号：US11978857

申请日：2007-10-30

Applicant: Jacques Gollier ,  James Micheal Harris

Inventor： Jacques Gollier ,  James Micheal Harris

IPC: H01S3/10 ,  H01S5/00

CPC classification number: G02F1/3532 ,  G02F2201/18 ,  G02F2203/58 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/0092

Abstract: According to one embodiment of the present invention, a frequency-converted laser source is provided wherein the wavelength conversion device comprises a plurality of waveguide components comprising respective input faces positioned in an effective focal field of the laser source. Individual ones of the waveguide components contribute different elements to a set of distinct wavelength conversion properties, defining a set of distinct wavelength conversion properties attributable to the waveguide components. The set of distinct wavelength conversion properties comprises properties representing phase matching wavelengths of the waveguide components, spectral widths of the waveguide components, conversion efficiency of the waveguide components, or combinations thereof. Additional embodiments are disclosed and claimed.

Abstract translation: 根据本发明的一个实施例，提供一种频率转换激光源，其中波长转换装置包括多个波导部件，其包括位于激光源的有效焦点中的相应输入面。 波导部件中的各个元件对一组不同的波长转换特性贡献不同的元件，从而限定了归因于波导部件的一组不同的波长转换特性。 不同波长转换特性的集合包括表示波导部件的相位匹配波长，波导部件的光谱宽度，波导部件的转换效率或其组合的特性。 公开并要求保护附加实施例。

公开(公告)号：US20080297270A1

公开(公告)日：2008-12-04

申请号：US12216270

申请日：2008-07-02

Applicant: Tomoo Takahara ,  Takeshi Hoshida ,  Hisao Nakashima

Inventor： Tomoo Takahara ,  Takeshi Hoshida ,  Hisao Nakashima

IPC: H03C3/00

CPC classification number: G02F1/225 ,  G02F2001/212 ,  G02F2201/18 ,  G02F2203/50 ,  H04B10/505 ,  H04B10/5561

Abstract: A drive signal generation unit generates first and second drive signals for driving first and second phase modulators of a DQPSK optical modulator. First and second regeneration circuits regenerate the first and second drive signals with respect to clock signals. The first and second phase modulators are driven by the regenerated first and second drive signals. The amplitude of the first drive signal is adjusted by a first attenuator. The clock signal for the second regeneration circuit is applied after attenuated by a second attenuator. The delay time caused by the first attenuator is the same as the delay time caused by the second attenuator.

Abstract translation: 驱动信号生成单元生成用于驱动DQPSK光调制器的第一和第二相位调制器的第一和第二驱动信号。 第一和第二再生电路相对于时钟信号再生第一和第二驱动信号。 第一和第二相位调制器由再生的第一和第二驱动信号驱动。 第一驱动信号的振幅由第一衰减器调节。 第二再生电路的时钟信号由第二衰减器衰减后施加。 由第一衰减器引起的延迟时间与由第二衰减器引起的延迟时间相同。

公开(公告)号：US20060193231A1

公开(公告)日：2006-08-31

申请号：US11409762

申请日：2006-04-24

Applicant: Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Rie Kojima ,  Noboru Yamada

Inventor： Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Rie Kojima ,  Noboru Yamada

IPC: G11B7/135

CPC classification number: G11B7/243 ,  G02B6/126 ,  G02B6/29362 ,  G02B2006/12164 ,  G02F1/3532 ,  G02F1/3544 ,  G02F1/3775 ,  G02F2001/3548 ,  G02F2201/18 ,  G02F2203/58 ,  G11B7/00454 ,  G11B7/005 ,  G11B7/124 ,  G11B7/1275 ,  G11B7/1395 ,  G11B7/24038 ,  G11B7/259 ,  G11B7/26 ,  G11B2007/0013 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316

Abstract: When a wavelength of a first laser beam with which a first recording medium including a first recording layer is recorded and reproduced is indicated as λ1 (nm), a wavelength of a second laser beam with which a second recording medium including a second recording layer is recorded and reproduced as λ2 (nm), the relationship between the wavelength λ1 and the wavelength λ2 is set to be expressed by 10≦|λ1−λ2|≦120. The first recording layer has a light absorptance ratio of at least 1.0 with respect to the wavelength λ1. The light transmittance of the first recording medium with respect to the wavelength λ2 is set to be at least 30 in both the cases where the recording layer is in a crystal state and in an amorphous state. In order to record and reproduce the optical multilayer disk with the above-mentioned characteristics, a multiwavelength light source with the following configuration is used. Wavelengths of fundamental waves with different wavelengths from injection parts formed at one end of a plurality of optical waveguides, which satisfy phase matching conditions different from one another and are formed in the vicinity of the surface of a substrate, are converted simultaneously, and the first and second laser beams are emitted from emission parts formed at substantially the same position at the other end of the optical waveguides. This enables an optimum optical system for high density recording and reproduction to be obtained.

Abstract translation: 当记录和再现包括第一记录层的第一记录介质的第一激光束的波长被指示为λ1（nm）时，包括第二记录层的第二记录介质的第二激光束的波长为 记录和再现为λ2（nm），波长λ1和波长λ2之间的关系被设置为由10≤λ1-λ2 |≤120表示。 第一记录层相对于波长λ1具有至少1.0的光吸收率。 在记录层处于结晶状态和非晶状态的情况下，第一记录介质相对于波长λ2的透光率被设定为至少30。 为了记录和再现具有上述特性的光学多层盘，使用具有以下构造的多波长光源。 同时转换与形成在多个光波导的一端的注入部分不同的波长的波长的波长，其满足彼此不同并且形成在基板表面附近的相位匹配条件，并且第一 并且第二激光束从形成在光波导的另一端处的基本相同位置处的发射部分发射。 这使得能够获得用于高密度记录和再现的最佳光学系统。

公开(公告)号：US06466593B1

公开(公告)日：2002-10-15

申请号：US09563073

申请日：2000-04-24

Applicant: Joseph M. Fukumoto

Inventor： Joseph M. Fukumoto

IPC: H01S311

CPC classification number: G02F1/39 ,  G02F1/3551 ,  G02F1/3553 ,  G02F2201/16 ,  G02F2201/17 ,  G02F2201/18 ,  G02F2201/34 ,  G02F2203/05 ,  G02F2203/58 ,  H01S3/0809 ,  H01S3/1061 ,  H01S3/113

Abstract: A passive Q switch. The inventive Q switch includes a first wedge of material adapted to absorb electromagnetic energy. The first wedge has a first thickness on a first end thereof and a second thickness on a second end thereof diametrically opposite the first end. The first wedge has a first surface connecting the first and second ends and a second surface connected the first and second ends. The second surface is slanted relative to the first surface. A second wedge of material is included in the inventive passive Q switch. As per the first wedge, the second wedge has a first thickness on a first end thereof and a second thickness on a second end thereof diametrically opposite the first end. The second wedge has a first surface connecting the first and second ends and a second surface connecting the first and second ends. The second surface is slanted relative to the first surface. The second surface of the first wedge is mounted in optical alignment with the second surface of the second wedge and in a plane parallel thereto. In the illustrative embodiment, the wedges are made of chromium:yttrium aluminum garnet (Cr+2:YAG) and mounted to allow the first and second wedges to translate relative to each other while maintaining a constant distant ‘d’ between the second surfaces thereof. The inventive Q-switch allows for a variable thickness and lasing hold off in a passive arrangement.

Abstract translation: 被动Q开关。 本发明的Q开关包括适于吸收电磁能的第一楔形材料。 第一楔形件在其第一端具有第一厚度，在第二楔形件的第二端部具有与第一端部直径相对的第二厚度。 第一楔具有连接第一端和第二端的第一表面和连接第一端和第二端的第二表面。 第二表面相对于第一表面倾斜。 本发明的无源Q开关包括第二楔形材料。 按照第一楔形件，第二楔形件在其第一端上具有第一厚度，在第二楔形件的第二端部与第一端部沿径向相对。 第二楔形件具有连接第一和第二端部的第一表面和连接第一和第二端部的第二表面。 第二表面相对于第一表面倾斜。 第一楔形物的第二表面安装成与第二楔形物的第二表面光学对准并且与平行于其的平面安装。 在说明性实施例中，楔子由铬：钇铝石榴石（Cr + 2：YAG）制成，并安装成允许第一和第二楔形物相对于彼此平移，同时保持其第二表面之间恒定的远距离“d” 本发明的Q开关允许可变厚度和激光在被动布置中保持。

公开(公告)号：US06396971B1

公开(公告)日：2002-05-28

申请号：US09538097

申请日：2000-03-29

Applicant: Martin L. Pullam ,  Ronald E. Rope

Inventor： Martin L. Pullam ,  Ronald E. Rope

IPC: G02B642

CPC classification number: G11B7/128 ,  G02F1/00 ,  G02F1/0121 ,  G02F2201/18 ,  G11B7/00454

Abstract: A method and a system for generating optical waveforms from electrical signals is disclosed. An input electrical signal is sampled to obtain a single channel data which is converted to multi-channel data. The multi-channel data is converted to multi-channel electrical pulses which are input along with a light source output into a switch array containing optical switches to obtain a multi-channel optical waveform made up of a plurality of optical waveforms. These waveforms are superpositioned to generate a stacked optical pulse. Alternatively, the multi-channel data may be converted to a multi-channel optical pulses. The stacked optical pulse may be used to write data to a storage medium.

Abstract translation: 公开了一种用于从电信号产生光波形的方法和系统。 对输入电信号进行采样，以获得转换为多通道数据的单通道数据。 多通道数据被转换为多路电脉冲，其与光源输出一起输入到包含光开关的开关阵列中，以获得由多个光波形构成的多通道光波形。 这些波形被叠加以产生堆叠的光脉冲。 或者，多通道数据可以被转换成多通道光脉冲。 层叠的光脉冲可以用于将数据写入存储介质。

公开(公告)号：US20230305355A1

公开(公告)日：2023-09-28

申请号：US18007460

申请日：2020-11-19

Applicant: Mitsubishi Electric Corporation

Inventor： Keita MOCHIZUKI ,  Takashi NAGIRA

IPC: G02F1/21 ,  G02F1/01

CPC classification number: G02F1/212 ,  G02F1/0136 ,  G02F1/0121 ,  G02F2203/50 ,  G02F2203/15 ,  G02F2201/305 ,  G02F2201/18 ,  G02F2203/70

Abstract: An optical semiconductor device includes an optical modulator provided on a substrate, an optical waveguide provided on the substrate, one end of the optical waveguide being connected to a light emission side of the optical modulator and another end of the optical waveguide being present at an end portion of the substrate, a phase adjusting unit provided on a path of the optical waveguide and an optical amplification unit provided on the path of the optical waveguide, wherein a minimum value or a maximum value of a transmittance spectrum having a ripple that periodically fluctuates with respect to a frequency because of multiple reflection of light that occurs between the one end and the other end of the optical waveguide is matched with a wavelength of the light input to the optical modulator by phase adjustment of the phase adjusting unit, and an error vector amplitude is minimized.

公开(公告)号：US20180217414A1

公开(公告)日：2018-08-02

申请号：US15883811

申请日：2018-01-30

Applicant: The Charles Stark Draper Laboratory, Inc.

Inventor： Steven J. Byrnes ,  Gregg E. Favalora ,  Joseph J. Register ,  Ian W. Frank ,  Dennis M. Callahan ,  Michael G. Moebius ,  Juha-Pekka J. Laine

IPC: G02F1/11

CPC classification number: G02F1/335 ,  G02B6/105 ,  G02B2006/0098 ,  G02F1/0311 ,  G02F1/0353 ,  G02F1/11 ,  G02F1/125 ,  G02F2001/311 ,  G02F2201/05 ,  G02F2201/18 ,  G02F2201/30 ,  G02F2201/302 ,  G02F2201/305 ,  G02F2201/307 ,  G02F2201/34 ,  G02F2202/20 ,  G02F2203/023 ,  G02F2203/07 ,  G02F2203/24 ,  G02F2203/28 ,  G02F2203/58 ,  G03H1/02 ,  G03H1/2294 ,  G03H2001/0224 ,  G03H2001/2292 ,  G03H2223/16 ,  G03H2223/17 ,  G03H2223/18 ,  G03H2223/23 ,  G03H2223/24 ,  G03H2225/11 ,  G03H2225/21 ,  G03H2225/32 ,  G03H2225/36 ,  G03H2225/55 ,  H01L41/09 ,  H01L41/1873 ,  H01L41/33 ,  H03H9/02968

Abstract: An electro-holographic light field generator device is disclosed. The light field generator device has an optical substrate with a waveguide face and an exit face. One or more surface acoustic wave (SAW) optical modulator devices are included within each light field generator device. The SAW devices each include a light input, a waveguide, and a SAW transducer, all configured for guided mode confinement of input light within the waveguide. A leaky mode deflection of a portion of the waveguided light, or diffractive light, impinges upon the exit face. Multiple output optics at the exit face are configured for developing from each of the output optics a radiated exit light from the diffracted light for at least one of the waveguides. An RF controller is configured to control the SAW devices to develop the radiated exit light as a three-dimensional output light field with horizontal parallax and compatible with observer vertical motion.