-
公开(公告)号：US10103809B2
公开(公告)日：2018-10-16
申请号：US15822673
申请日：2017-11-27
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
IPC: H04B10/572 , H04B10/079 , G02B6/12
Abstract: A wavelength tunable light source includes a light source, a wavelength monitor circuit configured to receive light emitted from the light source, and a processor that controls the light source based upon an output value of the wavelength monitor circuit, wherein the wavelength monitor circuit has a wavelength filter with a periodic transmission spectrum, and three photo detectors connected to outputs of the wavelength filter, and wherein the processor is configured to calculate a ratio of photo-detection normalized with two of three quantities of light received at the three photo detectors and control electric current input to the light source such that a calculated ratio of photo-detection approaches a target ratio at a designated wavelength.
-
公开(公告)号：US10082628B2
公开(公告)日：2018-09-25
申请号：US15605192
申请日：2017-05-25
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama
CPC classification number: G02B6/2861 , G02B6/125 , G02B6/29352 , G02B6/29398 , G02B2006/12061 , G02B2006/12097
Abstract: A disclosed optical device includes a first waveguide disposed between a branching portion and a multiplexing portion on a semiconductor substrate, and a second waveguide disposed between the branching portion and the multiplexing portion, the second waveguide being longer than the first waveguide. In the optical device, an optical confinement effect of the first waveguide is greater than an optical confinement effect of the second waveguide, the first waveguide has a curvature with a first curvature radius (Rs), the second waveguide has a curvature with a second curvature radius (Rl), and the first curvature radius is smaller than the second curvature radius.
-
公开(公告)号：US10031395B2
公开(公告)日：2018-07-24
申请号：US15416719
申请日：2017-01-26
Inventor： Yusuke Saito , Takehito Tanaka
Abstract: The present invention provides an optical modulator, which can be reduced in size with size reduction of an optical waveguide and electric wiring as compared to a conventional optical modulator. An optical modulator according to an embodiment includes a substrate; an optical waveguide provided on the substrate and configured to guide light; a modulation unit formed of part of the optical waveguide and configured to modulate the light; and electric wires provided on the substrate and configured to supply a high-frequency electric signal to the modulation unit. One end portion and another end portion of the optical waveguide are provided on a first end surface, one end portion of the electric wiring is provided along the first end surface, another end portion of the electric wiring is provided along a second end surface being different from the first end surface.
-
公开(公告)号：US20170237500A1
公开(公告)日：2017-08-17
申请号：US15409731
申请日：2017-01-19
Applicant: Fujitsu Optical Components Limited
Inventor： Hiroshi NISHIMOTO
IPC: H04B10/516 , H04B10/572 , H04B10/532 , G08C23/04
CPC classification number: H04B10/5161 , G08C23/04 , H04B10/532 , H04B10/572
Abstract: An optical transmitter that transmits an optical signal includes a dither superimposing circuit configured to generate a dither signal, the dither signal being used to control an operation of the optical transmitter to output the optical signal, and a control circuit configured to control intermittent superimposition of the dither signal onto a target to be controlled.
-
公开(公告)号：US09703168B2
公开(公告)日：2017-07-11
申请号：US14710087
申请日：2015-05-12
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama , Yoshinobu Kubota
CPC classification number: G02F1/225 , G02F1/0121 , G02F2001/212 , G02F2201/18
Abstract: An optical module includes: a driver; an optical modulator; a connector that is electrically connected to either the driver or the optical modulator and is provided with an input/output terminal; and a flexible substrate that has flexibility, is connected to the connector, and transfers an electrical signal generated by the driver to the optical modulator, wherein in an end part connected to the connector, the flexible substrate has, on a first surface facing the input/output terminal, a signal-purpose wiring pattern used for transferring the electrical signal and a ground-purpose wiring pattern formed along the signal-purpose wiring pattern, and has, on a second surface that is different from the first surface, a ground electrode that partially covers the second surface and has a shorter electrical distance to the signal-purpose wiring pattern than an electrical distance between the signal-purpose wiring pattern and the ground-purpose wiring pattern.
-
Patent Agency Ranking
公开(公告)号：US20170104542A1
公开(公告)日：2017-04-13
申请号：US15252447
申请日：2016-08-31
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki SUGIYAMA
IPC: H04B10/50 , H04B10/516 , H05K1/02
CPC classification number: H04B10/501 , H04B10/516 , H05K1/0221 , H05K1/0228 , H05K1/0245 , H05K1/028 , H05K1/0281 , H05K3/363
Abstract: An optical module includes a substrate, a package, and a flexible substrate. The substrate is provided with an electrode. The package includes a housing fixed to the substrate, a receiving unit that optically demodulates a received optical signal to convert the optical signal into a reception electrical signal, an output terminal that is provided on a surface of the housing and outputs the reception electrical signal, an input terminal that is provided at a height from the substrate different from a height of the output terminal and receives a transmission electrical signal, and a transmitting unit that optically modulates the transmission electrical signal received from the input terminal and transmits an optical signal resulting from optical modulation. A flexible substrate has flexibility and includes a signal electrode that connects one of the output terminal and the input terminal to the electrode arranged on the substrate.
-
公开(公告)号：US20170038543A1
公开(公告)日：2017-02-09
申请号：US15178945
申请日：2016-06-10
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki SUGIYAMA
Abstract: An optical communication device includes a support substrate, an optical waveguide, and a detector. The optical waveguide includes a first cladding layer that is formed on the support substrate, and is composed of silicon oxide or a material containing silicon oxide; a second cladding layer formed on the first cladding layer; and a core that is formed within the second cladding layer or between the first cladding layer and the second cladding layer, and is composed of silicon or a silicon-containing material. The detector contacts a part of the core, and is adapted to detect an intensity of light propagating through the core.
Abstract translation: 光通信装置包括支撑基板，光波导和检测器。 光波导包括形成在支撑基板上的第一覆层，由氧化硅或含有氧化硅的材料构成; 形成在所述第一包层上的第二包层; 以及形成在所述第二包层或所述第一包层和所述第二包层之间的芯，并且由硅或含硅材料构成。 检测器接触芯的一部分，并且适于检测通过芯传播的光的强度。
-
公开(公告)号：US20170033884A1
公开(公告)日：2017-02-02
申请号：US15134622
申请日：2016-04-21
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki SUGIYAMA , Takehito Tanaka
IPC: H04J14/06 , H04B10/532
CPC classification number: H04J14/06 , H04B10/2572 , H04B10/532
Abstract: An optical module has an optical modulator configured to perform phase modulation on each of divided light components of an input light and output at least two phase-modulated signal lights, a semiconductor optical amplifier configured to amplify the phased-modulated signal lights in a same polarization mode, and a polarization multiplexer configured to convert the amplified signal lights into two orthogonally polarized signal lights and multiplex the orthogonally polarized signal lights.
Abstract translation: 一种光学模块，具有：光调制器，被配置为对输入光的分光分量进行相位调制，并输出至少两个相位调制信号光;半导体光放大器，被配置为放大相位偏振的相位调制信号光 模式，以及偏振复用器，被配置为将放大的信号光转换成两个正交偏振信号光并将正交偏振信号光多路复用。
-
公开(公告)号：US20170033871A1
公开(公告)日：2017-02-02
申请号：US15172289
申请日：2016-06-03
Applicant: Fujitsu Optical Components Limited
Inventor： Hiroshi NISHIMOTO
IPC: H04B10/516 , H04L5/00 , H04B10/564
CPC classification number: H04L5/0048 , H04B10/5053 , H04B10/50572 , H04B10/50575 , H04B2210/075 , H04L5/0008 , H04L27/0008 , H04L27/18 , H04L27/2096 , H04L27/36
Abstract: An optical transmitter has an optical modulator with a Mach-Zehnder interferometer, a pilot signal generator configured to generate a pilot signal to be superimposed on a drive signal for driving the optical modulator or on a substrate bias voltage applied to the optical modulator, and a controller configured to detect a ratio between a pilot component and a direct current component contained in a light output from the optical modulator and control at least one of an amplitude of the drive signal and a level of the substrate bias voltage such that the ratio becomes a constant value.
Abstract translation: 一种光发射机具有一个具有马赫 - 策德尔干涉仪的光学调制器，一个导频信号发生器，被配置为产生一个导频信号，该导频信号叠加在用于驱动该光学调制器的驱动信号上或一个衬底偏置电压上， 控制器，其被配置为检测包含在从所述光调制器输出的光的导频分量和直流分量之间的比率，并且控制所述驱动信号的幅度和所述衬底偏置电压的电平中的至少一个，使得所述比率变为 恒定值。
-
公开(公告)号：US20170017098A1
公开(公告)日：2017-01-19
申请号：US15281166
申请日：2016-09-30
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki Sugiyama , Shinji Maruyama
CPC classification number: G02F1/0356 , G02B6/1228 , G02B6/14 , G02B6/4286 , G02B2006/12123 , G02F1/0316 , G02F1/0327 , G02F1/225 , G02F1/2255 , G02F2001/212 , G02F2201/58 , G02F2202/20 , H04B10/0779
Abstract: An optical device includes an optical waveguide that includes an incident waveguide, parallel waveguides along an electrode, and emission waveguides, formed on a substrate having an electro-optical effect, a first emission waveguide among the emission waveguides is set as an output waveguide of signal light, for output to an external destination and a second emission waveguide among the emission waveguides is set as a monitoring optical waveguide for the signal light; a photodetector that is disposed over the monitoring optical waveguide; and a groove formed on a portion of the substrate, where the photodetector of the monitoring optical waveguide is disposed. The monitoring optical waveguide has a width that, as compared with the width at a starting point side, is formed to increase as the monitoring optical waveguide approaches the groove.
Abstract translation: 光学装置包括光波导，其包括入射波导，沿着电极的平行波导，以及形成在具有电光效应的基板上的发射波导，发射波导中的第一发射波导被设置为信号的输出波导 将用于输出到外部目的地的光和发射波导中的第二发射波导设置为信号光的监视光波导; 设置在监视光波导上的光电检测器; 以及形成在基板的一部分上的凹槽，其中设置有监视光波导的光电检测器。 监视光波导具有与监视光波导接近凹槽时相比，起始点侧的宽度形成为增加的宽度。
-
-
-
-
-
-
-
-
-
Search Results
534
records
(took 0.024 seconds)
