专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

US20100111119A1 EXTERNAL RESONATOR TYPE WAVELENGTH VARIABLE SEMICONDUCTOR LASER 审中-公开
标题翻译：外部谐振器类型波长可变半导体激光器
公开(公告)号：US20100111119A1
公开(公告)日：2010-05-06
申请号：US12593513
申请日：2008-02-06
申请人： Kenji Sato , Kenji Mizutani , Shinya Sudo , Koji Kudo
发明人： Kenji Sato , Kenji Mizutani , Shinya Sudo , Koji Kudo
IPC分类号： H01S5/06 , H01S5/14
CPC分类号： H01S5/141
摘要： In an external resonator type semiconductor wavelength tunable laser apparatus using a wavelength tunable mirror or a wavelength tunable filter which uses a refractive index change of liquid crystal, a resonant frequency is set as FR, when a response of the refractive index change to a drive voltage frequency of liquid crystal becomes maximum. A frequency F1 of a drive AC power supply voltage to control the refractive index of liquid crystal is set to a frequency largely different from FR. A wavelength tunable mirror or a wavelength tunable filter is driven with a signal in which a dither AC signal F2 of a frequency close to the FR and an AC power supply voltage are superimposed. A PD to monitor a light output from the laser controls an amplitude of the drive AC power voltage such that an amplitude of the dither AC signal F2 become minimum. Thus, high laser mode stability is realized.
摘要翻译：在使用波长可调镜或使用液晶的折射率变化的波长可调滤波器的外部谐振器型半导体波长可调激光装置中，当折射率的响应变化为驱动电压时，共振频率被设定为FR 液晶的频率变得最大。控制液晶的折射率的驱动交流电源电压的频率F1被设定为与FR大不相同的频率。波长可调谐镜或波长可调滤波器由其中叠加了频率接近FR的频率抖动交流信号F2和交流电源电压的信号驱动。用于监视来自激光器的光输出的PD控制驱动AC电源电压的幅度，使得抖动AC信号F2的幅度变得最小。因此，实现了高激光模式的稳定性。

12. 发明申请

US20090257460A1 EXTERNAL RESONATOR VARIABLE WAVELENGTH LASER AND ITS PACKAGING METHOD 审中-公开
标题翻译：外部谐振器可变波长激光器及其包装方法
公开(公告)号：US20090257460A1
公开(公告)日：2009-10-15
申请号：US11995554
申请日：2006-07-13
申请人： Kenji Mizutani , Jan De Merli , Koji Kudo , Kenji Sato , Shinya Sudo
发明人： Kenji Mizutani , Jan De Merli , Koji Kudo , Kenji Sato , Shinya Sudo
IPC分类号： H01S3/10 , H01S3/00
CPC分类号： H01S5/141 , H01S5/028 , H01S5/0287 , H01S5/0625 , H01S5/0687 , H01S5/142
摘要： The reflectance of a semiconductor optical amplifier (1) on the side where an external cavity is formed is 0.1% at most. The finesse value obtained by dividing the period of the transmission characteristic of the wavelength selection filter (3) by the half value width of the transmission characteristic is 4 or more and 25 or less. Even when the reflectance of a cavity side end face (1bb) of the semiconductor optical amplifier (1) is about 0.1%, a wavelength accuracy of ±1.5 GHz can be achieved by setting the finesse to 4 or more. In addition, a wavelength accuracy of about ±0.5 GHz can be achieved by setting the finesse to 8 or more. In order to suppress insertion loss, it is preferable to set the finesse of the FP etalon to 25 or less. This makes it possible to implement an external cavity wavelength tunable laser with high wavelength accuracy.
摘要翻译：半导体光放大器（1）在形成外部空腔的一侧的反射率最多为0.1％。通过将波长选择滤波器（3）的传输特性的周期除以传输特性的半值宽度获得的精细度值为4以上且25以下。即使当半导体光放大器（1）的腔侧端面（1bb）的反射率为约0.1％时，通过将精细度设定为4以上可以实现±1.5GHz的波长精度。此外，通过将精细度设定为8以上可以实现约±0.5GHz的波长精度。为了抑制插入损耗，优选将FP标准具的精细度设定为25以下。这使得可以实现具有高波长精度的外部腔波长可调谐激光器。

13. 发明申请

US20090268762A1 Optical intergrated device 审中-公开
标题翻译：光学集成装置
公开(公告)号：US20090268762A1
公开(公告)日：2009-10-29
申请号：US11921763
申请日：2005-06-08
申请人： Jan De Merlier , Kenji Sato , Kenji Mizutani , Koii Kudo
发明人： Jan De Merlier , Kenji Sato , Kenji Mizutani , Koii Kudo
IPC分类号： H01S3/10 , H01S3/08 , H01S5/00
CPC分类号： H01S5/141 , G02B6/12004 , G02F1/2257 , G02F2001/217 , H01S5/02248 , H01S5/02284 , H01S5/026 , H01S5/0261 , H01S5/0265 , H01S5/101 , H01S5/1085
摘要： An object of the invention is to provide an optical integrated device which enables to supply a wide range of variable wavelength and to reduce the coupling loss. The optical integrated circuit chip (10) includes a semiconductor optical amplifier section (20), a phase control section (18), a partially reflecting mirror (16) having optical power splitter function and a Mach-Zehnder optical modulator (22), wherein all elements are formed on a same substrate monolithically. On each facet of the optical integrated circuit chip (10), an Anti-Reflection coating (12, 14) is formed respectively. A lens (30), an optical filter (32) and an external resonator mirror (28) are located outside of the optical integrated circuit chip (10), wherein an external cavity laser is formed with a semiconductor optical amplifier (SOA) section (20) operating as gain section, a partially reflecting mirror (16) operating as first reflecting mirror and an external resonator mirror (28) operating as a second mirror.
摘要翻译：本发明的目的是提供一种能够提供宽范围的可变波长并减少耦合损耗的光学集成器件。光集成电路芯片（10）包括半导体光放大器部分（20），相位控制部分（18），具有光功率分配器功能的部分反射镜（16）和马赫 - 策德尔光调制器（22），其中所有元件均匀地形成在相同的衬底上。在光集成电路芯片（10）的每个面上分别形成防反射涂层（12,14）。透镜（30），滤光器（32）和外部谐振镜（28）位于光集成电路芯片（10）的外部，其中外腔激光器形成有半导体光放大器（SOA）部分 20）作为增益部分工作，作为第一反射镜操作的部分反射镜（16）和作为第二反射镜操作的外部谐振器反射镜（28）。

14. 发明授权

US08284807B2 Wavelength-tunable laser apparatus and wavelength changing method thereof 有权
标题翻译：波长可调激光装置及其波长变换方法
公开(公告)号：US08284807B2
公开(公告)日：2012-10-09
申请号：US12865779
申请日：2008-12-09
申请人： Kenji Mizutani , Kenji Sato , Koji Kudo
发明人： Kenji Mizutani , Kenji Sato , Koji Kudo
IPC分类号： H01S3/10 , H01S3/13 , H01S3/00
CPC分类号： H01S5/141 , H01S5/0617 , H01S5/06255 , H01S5/06837 , H01S5/0687
摘要： An object is to provide a wavelength-tunable laser apparatus that prevents a grid-hopping upon wavelength change, and a wavelength changing method thereof. A wavelength-tunable laser apparatus 101 according to the present invention includes a semiconductor optical amplifier 102 and a periodic wavelength-selection filter 106. Further, the wavelength-tunable laser apparatus 101 includes a phase control unit 111 that concurrently controls a current applied to the semiconductor optical amplifier 102 and a phase tuning of a wavelength-tunable laser under an open-loop control. Thus, dark-tuning can be achieved.
摘要翻译：本发明的目的是提供一种波长可调谐激光装置及其波长改变方法，该激光装置防止波长变化时的跳网。根据本发明的波长可调激光装置101包括半导体光放大器102和周期性波长选择滤波器106.此外，波长可调激光装置101包括相位控制单元111，其同时控制施加到半导体光放大器102和在开环控制下的波长可调激光器的相位调谐。因此，可以实现暗调。

15. 发明申请

US20110002349A1 WAVELENGTH-TUNABLE LASER APPARATUS AND WAVELENGTH CHANGING METHOD THEREOF 有权
标题翻译：波长波长激光装置及其波长变化方法
公开(公告)号：US20110002349A1
公开(公告)日：2011-01-06
申请号：US12865779
申请日：2008-12-09
申请人： Kenji Mizutani , Kenji Sato , Koji Kudo
发明人： Kenji Mizutani , Kenji Sato , Koji Kudo
IPC分类号： H01S5/06 , H01S5/14
CPC分类号： H01S5/141 , H01S5/0617 , H01S5/06255 , H01S5/06837 , H01S5/0687
摘要： An object is to provide a wavelength-tunable laser apparatus that prevents a grid-hopping upon wavelength change, and a wavelength changing method thereof. A wavelength-tunable laser apparatus 101 according to the present invention includes a semiconductor optical amplifier 102 and a periodic wavelength-selection filter 106. Further, the wavelength-tunable laser apparatus 101 includes a phase control unit 111 that concurrently controls a current applied to the semiconductor optical amplifier 102 and a phase tuning of a wavelength-tunable laser under an open-loop control. Thus, dark-tuning can be achieved.
摘要翻译：本发明的目的是提供一种波长可调谐激光装置及其波长改变方法，该激光装置防止波长变化时的跳网。根据本发明的波长可调激光装置101包括半导体光放大器102和周期性波长选择滤波器106.此外，波长可调激光装置101包括相位控制单元111，其同时控制施加到半导体光放大器102和在开环控制下的波长可调激光器的相位调谐。因此，可以实现暗调。

16. 发明申请

US20070104242A1 Distributed-feedback semiconductor laser, distributed-feedback semiconductor laser array, and optical module 审中-公开
标题翻译：分布反馈半导体激光器，分布反馈半导体激光器阵列和光学模块
公开(公告)号：US20070104242A1
公开(公告)日：2007-05-10
申请号：US10580560
申请日：2004-11-12
申请人： Koji Kudo , Kenji Mizutani , Kenji Sato , Tomoaki Kato
发明人： Koji Kudo , Kenji Mizutani , Kenji Sato , Tomoaki Kato
IPC分类号： H01S3/08
CPC分类号： B82Y20/00 , H01S5/0264 , H01S5/028 , H01S5/1014 , H01S5/1039 , H01S5/124 , H01S5/2224 , H01S5/227 , H01S5/34306 , H01S5/4031 , H01S5/4087
摘要： A distributed-feedback semiconductor laser as a direct modulation light source with a modulation rate over 10 Gb/s having (1) a low threshold current characteristic, (2) a high single-mode characteristic, (3) a high resonant frequency (fr) characteristic, (4) a high temperature characteristic, and (5) adaptability to wide wavelength band and an extremely short active region. The distributed-feedback semiconductor laser 1 comprises an active region 30 for generating the gain of the laser beam and a diffraction grating 13 formed in the active region 30. Out of the two front and back end surfaces sandwiching the active region 30, the front end surface 1a has a reflectivity of 1 percent or less, and the back end surface 1b has a reflectivity of 30 percent or more when viewed from the back end surface 1b toward the front. The coupling coefficient κ of the diffraction grating 13 is 100 cm−1 or more, and the length L of the active region 30 is 150 μm or less. A combination of κ and L provided that Δα/gth is 1 or more is used where Δα is the gain difference between modes and gth=(internal loss αi+mirror loss αm) is the threshold gain.
摘要翻译：作为具有（1）低阈值电流特性的调制速率超过10Gb / s的直接调制光源的分布反馈半导体激光器，（2）高单模特性，（3）高谐振频率（fr ）特性，（4）高温特性，（5）适用于宽波段和极短的有源区。分布反馈半导体激光器1包括用于产生激光束的增益的有源区域30和形成在有源区域30中的衍射光栅13.在夹持有源区域30的两个前端和后端表面之外，前端表面1a的反射率为1％以下，后端面1b从后端面1b向前方观察时的反射率为30％以上。衍射光栅13的耦合系数kapp为100cm -1以上，有源区30的长度L为150μm以下。使用kappa和L的组合，其中使用Deltaalpha / g第1个或更多个，其中Deltaalpha是模式之间的增益差异，并且第g个内部损失α_{i +镜像损失alpha ）是阈值增益。}

17. 发明申请

US20130113641A1 OPTICAL INTENSITY-TO-PHASE CONVERTER, MACH-ZEHNDER INTERFEROMETER, OPTICAL A/D CONVERTER, AND METHOD OF CONSTRUCTING OPTICAL INTENSITY-TO-PHASE CONVERTER 有权
标题翻译：光学强度相转换器，MACH-ZEHNDER干涉仪，光学A / D转换器和构建光强度相变转换器的方法
公开(公告)号：US20130113641A1
公开(公告)日：2013-05-09
申请号：US13698019
申请日：2011-04-28
申请人： Shinya Sudo , Kenji Sato
发明人： Shinya Sudo , Kenji Sato
IPC分类号： G02F1/01 , H03M1/12
CPC分类号： G02F1/011 , G02F1/225 , G02F1/3517 , G02F7/00 , H03M1/12 , Y10T29/49
摘要： An optical intensity-to-phase converter according to the present invention includes first and second waveguides to which a first input light is input, a third waveguide to which a second input light is input, and an interaction region that is provided in common on the second and third waveguides in which the first and second input lights are multiplexed and interact. The optical intensity-to-phase converter provides delay to output lights output from the first and second waveguides based on intensity of the first or second input light. Then, it is possible to provide an optical intensity-to-phase converter that enables simple configuration of an optical A/D converter.
摘要翻译：根据本发明的光强度相变转换器包括输入第一输入光的第一波导和第二波导，输入第二输入光的第三波导和在其上共同设置的相互作用区第二和第三波导，其中第一和第二输入光被复用和相互作用。光强度相变转换器基于第一或第二输入光的强度向第一和第二波导输出的输出光提供延迟。然后，可以提供能够简单配置光学A / D转换器的光学强度相变转换器。

18. 发明申请

US20120224856A1 OPTICAL MODULATION DEVICE AND OPTICAL MODULATION METHOD 失效
标题翻译：光学调制装置和光学调制方法
公开(公告)号：US20120224856A1
公开(公告)日：2012-09-06
申请号：US13508721
申请日：2010-09-28
申请人： Kenji Sato , Shinya Sudo
发明人： Kenji Sato , Shinya Sudo
IPC分类号： H04J14/00
CPC分类号： H04B10/5053 , G02F2203/56 , H04B10/516
摘要： The present invention has an object to provide an optical modulation device and an optical modulation method that achieve an excellent spectral efficiency with a simple and compact configuration and low power consumption. An optical modulation device according to an exemplary aspect of the present invention includes a CW light source (11), a coupler (12), optical modulators (14a) and (14b), an optical frequency shifter (15b), a serial-to-parallel converter (21), and a delay circuit (24a). The serial-to-parallel converter (21) divides a data signal having a bit rate B into two data strings having a bit rate B/2, and extracts a clock signal (CLK). The delay circuit (24a) temporally synchronizes the two data strings. CW light emitted from the CW light source is split into two beams by the coupler (12). The optical modulators (14a) and (14b) generate optical signals by modulating the two split light beams according to the data strings. The optical frequency shifter (15b) shifts center frequencies of the optical signals by Δf=B/(2×2) according to the clock signal (CLK).
摘要翻译：本发明的目的是提供一种光调制装置和光调制方法，其以简单紧凑的结构和低功耗实现了优异的光谱效率。根据本发明的示例性方面的光调制装置包括CW光源（11），耦合器（12），光调制器（14a）和（14b），光移频器（15b），串 - 并联转换器（21）和延迟电路（24a）。串行到并行转换器（21）将具有比特率B的数据信号分成具有比特率B / 2的两个数据串，并提取时钟信号（CLK）。延迟电路（24a）在时间上同步两个数据串。从CW光源发射的CW光被耦合器（12）分成两束。光调制器（14a）和（14b）通过根据数据串调制两个分束光束来产生光信号。光移位器（15b）根据时钟信号（CLK）将光信号的中心频率移位＆Dgr; f = B /（2×2）。

19. 发明授权

US08705980B2 Optical modulation device and optical modulation method 失效
标题翻译：光调制装置及光调制方式
公开(公告)号：US08705980B2
公开(公告)日：2014-04-22
申请号：US13508721
申请日：2010-09-28
申请人： Kenji Sato , Shinya Sudo
发明人： Kenji Sato , Shinya Sudo
IPC分类号： H04B10/12
CPC分类号： H04B10/5053 , G02F2203/56 , H04B10/516
摘要： The present invention has an object to provide an optical modulation device and an optical modulation method that achieve an excellent spectral efficiency with a simple and compact configuration and low power consumption. An optical modulation device according to an exemplary aspect of the present invention includes a CW light source (11), a coupler (12), optical modulators (14a) and (14b), an optical frequency shifter (15b), a serial-to-parallel converter (21), and a delay circuit (24a). The serial-to-parallel converter (21) divides a data signal having a bit rate B into two data strings having a bit rate B/2, and extracts a clock signal (CLK). The delay circuit (24a) temporally synchronizes the two data strings. CW light emitted from the CW light source is split into two beams by the coupler (12). The optical modulators (14a) and (14b) generate optical signals by modulating the two split light beams according to the data strings. The optical frequency shifter (15b) shifts center frequencies of the optical signals by Δf=B/(2×2) according to the clock signal (CLK).
摘要翻译：本发明的目的是提供一种光调制装置和光调制方法，其以简单紧凑的结构和低功耗实现了优异的光谱效率。根据本发明的示例性方面的光调制装置包括CW光源（11），耦合器（12），光调制器（14a）和（14b），光移频器（15b），串 - 并联转换器（21）和延迟电路（24a）。串行到并行转换器（21）将具有比特率B的数据信号分成具有比特率B / 2的两个数据串，并提取时钟信号（CLK）。延迟电路（24a）在时间上同步两个数据串。从CW光源发射的CW光被耦合器（12）分成两束。光调制器（14a）和（14b）通过根据数据串调制两个分束光束来产生光信号。光移位器（15b）根据时钟信号（CLK）将光信号的中心频率移位＆Dgr; f = B /（2×2）。

20. 发明授权

US08600198B2 Semiconductor optical modulator, semiconductor optical integrated device, and method of manufacturing the same 失效
标题翻译：半导体光调制器，半导体光集成器件及其制造方法
公开(公告)号：US08600198B2
公开(公告)日：2013-12-03
申请号：US13254336
申请日：2010-03-05
申请人： Shinya Sudo , Tomoaki Kato , Kenji Sato , Takao Morimoto
发明人： Shinya Sudo , Tomoaki Kato , Kenji Sato , Takao Morimoto
IPC分类号： G02F1/035 , G02F1/01 , G02B6/10 , H01L21/00 , H01L33/00
CPC分类号： G02F1/2257 , G02F2001/212 , G02F2201/05 , G02F2201/063
摘要： The invention provides a semiconductor optical modulator including a two-step mesa optical waveguide having a first clad layer (101); a mesa-like core layer (102) formed over the first clad layer (101); and a second clad layer (103) formed into a mesa shape over the core layer (102), and having a mesa width smaller than that of the core layer (102). The two-step mesa optical waveguide includes a multi-mode optical waveguide region to which an electric field is applied or into which an electric current is injected, and a single-mode optical waveguide region to which the electric field is not applied and into which the electric current is not injected. When the mesa width of the core layer in the multi-mode optical waveguide region is defined as Wmesa1, and the mesa width of the core layer in the single-mode optical waveguide region is defined as Wmesa2, Wmesa1>Wmesa2 is satisfied.
摘要翻译：本发明提供一种半导体光调制器，包括具有第一覆层（101）的两步台面光波导; 在所述第一包层（101）上形成的台面状芯层（102）; 以及在所述芯层（102）上形成为台面形状的第二包层（103），并且具有比所述芯层（102）的台面宽度小的台面宽度。两级台面光波导包括施加电场或注入电流的多模光波导区域和不施加电场的单模光波导区域，其中电流不会被注入。当多模光波导区域中的核心层的台面宽度被定义为Wmesa1时，单模光波导区域中的核心层的台面宽度被定义为Wmesa2，所以满足Wmesa1> Wmesa2。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式